Article
Chemistry, Physical
Pradeep Kumar Sharma, T. D. Senguttuvan, V. K. Sharma, Pankaj Patro, Sujeet Chaudhary
Summary: In this study, the thermoelectric performance of PbTe compound was significantly improved through bismuth doping and dispersing SiC nanoparticles. Bismuth doping improved the electrical conductivity, while SiC nanoparticles regulated the Seebeck coefficient and suppressed the lattice thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Multidisciplinary
Yan Sun, Yue Liu, Ruichuan Li, Yanshuai Li, Shizheng Bai
Summary: This paper reviews the design and research progress of thermoelectric materials around lifting ZT value in recent years, discussing the optimization of carrier concentration, improvement of carrier mobility, and the influence of lattice thermal conductivity on thermoelectric performance. The synergistic effect of different dimensions, scales, and crystal structures to reduce lattice thermal conductivity is also discussed, as well as the new application of electro-acoustic decoupling in thermoelectric materials, providing practical ideas for expanding the application and scale industrialization of thermoelectric devices.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Yan Yan, Shuo Zhang, Qun Ma, Ziyang Wang, Tao Feng, Qi Chen, Bo Shi, Fangyuan Sun, Meng Liang, Junxi Wang, Xiaoyan Yi, Jinmin Li, Zhiqiang Liu
Summary: A new two-dimensional InGaN/GaN SL structured TE device was developed, which successfully improved the TE performance parameter by reducing the thermal conductivity without deteriorating the power factor. This research provides a new material system for improving the performance of nitride TE materials at high temperatures and extends the application fields of electricity harvesting from waste heat.
Article
Polymer Science
Ruchita Jani, Niall Holmes, Roger West, Kevin Gaughan, Xiaoli Liu, Ming Qu, Esther Orisakwe, Lorenzo Stella, Jorge Kohanoff, Hongxi Yin, Bartlomiej Wojciechowski
Summary: Thermoelectric materials can convert thermal energy into electrical energy, and can be used to harvest the heat energy generated by temperature differences between the inside and outside of buildings. This paper presents research on the development and characterization of a cement-based thermoelectric material, which is doped with metal oxides to enhance its thermoelectric properties. The study also discusses the positive impact of moisture content on the electrical conductivity of the material.
Article
Chemistry, Physical
Daniela Delgado, Silvana Moris, Paulina Valencia-Galvez, Maria Luisa Lopez, Inmaculada Alvarez-Serrano, Graeme R. Blake, Antonio Galdamez
Summary: In this study, we synthesized and characterized AgSnm[Sb0.8Bi0.2]Te2+m and Br-doped telluride systems. The crystal structures of these compounds were identified as NaCl-type lattice using powder X-ray diffraction. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and high-resolution transmission electron microscopy were used to investigate their microstructures. The transport properties were found to be dominated by holes, as indicated by positive Seebeck coefficients.
Article
Materials Science, Multidisciplinary
Wenjie Tan, Jiarui Zhang, Fukun Ma, Min Jing, Ningning Xing
Summary: Ca2Si was synthesized using a high-temperature melting furnace and spark plasma sintering process for studying its thermoelectric properties. The use of high-temperature melting furnaces prevented Ca element volatilization during preparation, ensuring high-purity Ca2Si production. Ca2Si showed a gradual increase in resistivity with rising temperature, reaching 12 mO.cm at 873K, indicating semi-metallic characteristics. With relatively low thermal conductivity of 1.1 to 1.7 W.m(-1).K-1 in the temperature range of 323K-873K, Ca2Si achieved a maximum thermoelectric figure of merit (ZT) of 0.1 due to its atypical behavior and electrical properties of semiconductors. In contrast, Mg2Si attained a higher ZT value of 0.32 at 873K, primarily because of its exceptional Seebeck coefficient.
Article
Nanoscience & Nanotechnology
Vikrant Trivedi, Minati Tiadi, Budaraju Srinivasa Murty, Dillip K. Satapathy, Manjusha Battabyal, Raghavan Gopalan
Summary: By tailoring interface carrier filtering, we achieved a very high thermoelectric figure-of-merit in skutterudite nanocomposites, resulting in a significant increase in the Seebeck coefficient and a reduction in thermal conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Yuan -Wen Hsiao, Shang-Ren Chee, Hsuan-Ta Wu, Chuan-Feng Shih
Summary: This research investigates the transport and thermoelectric behaviors of CZTSSe thin films. Both p-type and n-type films were successfully synthesized to comprehensively study the characteristics of CZTS. The conductivity and carrier concentration increased with higher Cu contents, changing the conducting type from p-type to n-type. The band gap decreased and the full width at half maximum increased with increased Cu content. The proposed n-type CZTS with Cu/Zn + Sn tilde 1.01 and Zn/Sn tilde 1.1 had the best power factor.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Marzhan M. Kubenova, Kairat A. Kuterbekov, Malik K. Balapanov, Rais K. Ishembetov, Asset M. Kabyshev, Kenzhebatyr Z. Bekmyrza
Summary: This review explores the thermoelectric phenomena in copper chalcogenides substituted with sodium and lithium alkali metals, comparing the results with other modern thermoelectric materials. It discusses crystal structure, phase transitions, synthesis methods, electrical, thermodynamic, thermal, and thermoelectric properties, as well as practical applications of nanocrystalline copper chalcogenides and its alloys. The presence of a liquid-like phase interfering with phonons in superionic copper chalcogenides results in low lattice thermal conductivity, favoring high thermoelectric efficiency.
Article
Materials Science, Ceramics
I. V. Shamsutov, A. A. Markov, O. V. Merkulov
Summary: This article discusses the development of a z-type thermoelectric element with a direct electrical junction based on dissimilar oxide conductors, Ca0.9Bi0.1MnO3 (n-type) and Ca2.7Bi0.3Co4O9 (p-type). A thermoelectric z-element was fabricated using hydrostatic pressing and an interconnector based on an oxide composite and silver particles. The microstructure of the thermoelectric legs was studied using electron microscopy. Measurements of resistivity and Seebeck coefficient were conducted, and the estimated power factor was calculated for different ceramic samples. The maximum output power of the manufactured thermoelectric module reached 1.1 mW at a temperature gradient of 580 degrees C and a cold side temperature of 37 degrees C. Additionally, simulations were performed to determine the resistance of interfaces between the thermoelectric material and interconnector. The study highlights the potential of hydrostatic pressing in producing complex-shaped thermoelectric elements without vulnerable metal-semiconductor electrical connections in oxide thermoelectric modules.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Mustafa Majid Rashak Al-Fartoos, Anurag Roy, Tapas K. Mallick, Asif Ali Tahir
Summary: Amidst global challenges, thermoelectricity offers a promising solution for sustainable energy by converting waste heat into electricity. However, obstacles such as high cost, toxicity, and reliance on rare-earth elements hinder the development of high-performance thermoelectric materials.
Article
Chemistry, Physical
Dmitry Pshenay-Severin, Satya Narayan Guin, Petr Konstantinov, Sergey Novikov, Ekashmi Rathore, Kanishka Biswas, Alexander Burkov
Summary: This study presents the experimental and theoretical investigation of the band structure, phonon spectrum, and thermoelectric properties of jalpaite. The measurements reveal a low thermal conductivity value at room temperature, which is attributed to the complex crystal structure of the material. The influence of intrinsic defects on the transport properties has also been studied.
Article
Chemistry, Physical
Vikash Sharma, Divya Sharma, Ranu Bhatt, Pankaj K. Patro, Gunadhor Singh Okram
Summary: We report on the thermoelectric properties of nickel-doped Ag2-xNixTe nanostructures in a certain temperature range. The material undergoes a metal-insulator transition with increasing nickel doping concentration. The electrical resistivity and Seebeck coefficient show linear relationships with temperature. The material achieves higher thermoelectric coefficient through a sharp decrease in thermal conductivity associated with a structural phase transition.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hyerin Jeong, Samuel Kimani Kihoi, Hyunji Kim, Ho Seong Lee
Summary: In this study, improved thermoelectric performance of GeTe-based materials was achieved through Bi and In co-doping, which tuned the carrier concentration, resonant states, and suppressed thermal conduction. The introduction of Bi induced resonant states near the Fermi energy level, while also significantly reducing lattice thermal conductivity by forming extensive solid solution point defects. Additionally, co-doping with Bi and In lowered the phase transformation temperature and widened the temperature range for better thermoelectric performance of cubic GeTe.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Sree Sourav Das, Md. Golam Rosul, Mona Zebarjadi
Summary: We propose a first-principles framework to study the electronic properties of SnSe2 and optimize its thermoelectric performance. By using density functional theory and the Boltzmann transport equation, we calculate the thermoelectric power factor considering electron-phonon and ionized impurity interactions. Furthermore, we evaluate the lattice thermal conductivity and find that the SnSe2 layers exhibit ultra-low thermal conductivity, resulting in a high ZT value of 1.1 at 950 K.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Babu Madavali, Hyo-Seob Kim, Chul-Hee Lee, Dong-soo Kim, Soon-Jik Hong
JOURNAL OF ELECTRONIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Babu Madavali, Dong-won Shin, Sung Ho Song, Dong-soo Kim, Jin Kyu Lee, Soon-Jik Hong
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Sang Min Yoon, Babu Madavali, Chul-Hee Lee, Olu Emmanuel Femi, Jong-Hyeon Lee, Sung Ho Song, Soon-Jik Hong
MATERIALS RESEARCH BULLETIN
(2020)
Article
Materials Science, Multidisciplinary
Dong-won Shin, Babu Madavali, Dong-soo Kim, Jin-Young Lee, Min-chul Kang, Cheol-woong Yang, C. Suryanarayana, Soon-jik Hong
MATERIALS RESEARCH EXPRESS
(2020)
Article
Chemistry, Physical
Cheenepalli Nagarjuna, Hyeon-Jeong You, Suseong Ahn, Jun-Woo Song, Kwang-Yong Jeong, Babu Madavali, Gian Song, Young-Sang Na, Jong Woo Won, Hyoung-Seop Kim, Soon-Jik Hong
Summary: In this study, equiatomic CoCrFeMnNi high entropy alloy (HEA) was fabricated by induction melting and subsequent thermomechanical treatments were carried out to achieve single FCC phase with equiaxed grains. The friction and wear behavior of HEA were investigated using ball-on-disc configuration in dry and ambient conditions under different sliding time, normal load, and velocity. Detailed microscopic characterizations were conducted to examine the worn surface and subsurface deformation mechanisms, identifying the types of wear encountered during dry sliding process. It was found that the hardness of the deformed layer was 63% higher than the matrix due to grain refinement induced by sliding friction, and the friction coefficient stabilized at longer sliding times due to the lubricant behavior of oxidized wear debris. Moreover, the wear rate significantly decreased with increasing sliding time, attributable to the oxidation of wear debris on the worn surface and the formation of a deformed layer with grain refinement that resists plastic deformation by strengthening the subsurface layers.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Babu Madavali, Chul-Hee Lee, Jin-Gu Han, Dong Hwan Kim, Jong Tae Kim, Gian Song, Jin Kyu Lee, Soon-Jik Hong
Summary: Large quantities of p-type 20%Bi2Te3-80%Sb2Te3 alloy powders were fabricated using the gas atomization process, followed by the consolidation of a large-scale sample using spark plasma sintering. The high-thickness sintered bulk exhibited uniform thermoelectric transport properties across different positions, with peak electrical conductivity and power factor achieved at the top part of the specimen, and the maximum figure of merit (ZT) obtained at the bottom position.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Pathan Sharief, Babu Madavali, Sung Ho Song, Jin Kyu Lee, Ki Buem Kim, Jong Tae Kim, Dong Hwan Kim, Jun-Hyun Han, Soon-Jik Hong
Summary: In this research, the effect of graphene content on thermoelectric, magnetic, and mechanical properties of Bi0.5Sb1.5Te3/BST composites was systematically investigated. The results showed that graphene dispersion in the matrix led to improved mechanical properties and reduced thermal conductivity, ultimately enhancing the performance of the composite materials.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Babu Madavali, Pathan Sharief, Kyoung-Tae Park, Gian Song, Song-Yi Back, Jong-Soo Rhyee, Soon-Jik Hong
Summary: Optimizing powder size and controlling microstructure can improve the thermoelectric performance of alloys by increasing electrical conductivity and carrier mobility, leading to higher power factor and thermoelectric efficiency.
Article
Engineering, Chemical
Babu Madavali, Pathan Sharief, Jun-woo Song, Ki Buem Kim, C. Suryanarayana, Sung Ho Song, Soon-Jik Hong
Summary: Low-dimensional materials can enhance the efficiency of thermoelectric devices. This study fabricated ultra-fine powders using high energy ball milling and investigated the effects of different process control agents on powder characteristics and thermoelectric properties.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Huynh Thanh-Nam, Madavali Babu, Hayk H. Nersisyan, Hong Soon-Jik, Lee Jin-Kyu, Kim Ki-Buem, Song Gian, Lee Jong-Hyeon
Summary: This study presents a novel approach to improve the thermoelectric performance by introducing LaVO3 nanoparticles into the Cu0.07Bi0.5Sb1.5Te3 matrix, forming incoherent interfaces. The incoherent interfaces enhance the electrical conductivity and suppress the decrease in Seebeck coefficients. In addition, the incoherent interfaces reduce the thermal conductivity through enhanced phonon scattering mechanisms. The sample with 5 wt% LVO achieves a significant improvement in thermoelectric figure of merit.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Pathan Sharief, Peyala Dharmaiah, Babu Madavali, Jun Woo Song, Jin Kyu Lee, Jong Hyeon Lee, Soon-Jik Hong
Summary: This study proposes a layered structure approach to improve the performance of thermoelectric materials by arranging different microstructure materials in a layered manner, optimizing the electrical conductivity and Seebeck coefficient, and thereby increasing the ZT value.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Pathan Sharief, Babu Madavali, Peyala Dharmaiah, Jun Woo Song, Gian-Song, Youhan Sohn, Jun Hyun Han, Sung Ho Song, Soon-Jik Hong
Summary: By performing electroless surface coating on water atomized BST powders, the thermoelectric performance was improved, with significantly increased power factor and Seebeck coefficient, and reduced lattice thermal conductivity, resulting in high zT across a wide temperature range.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Babu Madavali, Van Dao Nguyen, Sung Jae Jo, Chul-hee Lee, Soon-Jik Hong
Summary: In this study, a large-sized pellet of p-type polycrystalline Bi-Sb-Te was prepared and its microstructural behavior and anisotropic thermoelectric and mechanical properties were investigated. The results showed higher electrical and thermal conductivity along the perpendicular direction, attributed to orientation and lower aspect ratio of grain boundaries. The Seebeck coefficient was isotropic. The perpendicular specimen achieved a higher thermoelectric figure of merit, compression strength, and hardness compared to the parallel sample. These enhanced thermoelectric materials have potential applications in power generation and cooling devices.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Van Dao Nguyen, Taek-soo Kim, Babu Madavali, Sung Jae Jo, Jin Gyu Lee, Gian Song, Soon-jik Hong
Summary: In this study, the formation of columnar grain microstructure of melt-spun Nd-Fe-B alloy was investigated and its effect on the magnetic properties of the spark plasma sintered Nd-Fe-B bulk was studied. The formation of columnar grains perpendicular to the ribbon plane was examined through SEM, while XRD results showed a strong (00 l) crystal texture. The mechanisms behind the formation of columnar grains and the magnetic properties of the sintered Nd-Fe-B bulks were discussed. The obtained Nd-Fe-B magnet demonstrated enhanced magnetic properties by controlling the microstructure of the melt-spun ribbons, including columnar grain regions and equiaxed grain regions.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
P. Sharief, B. Madavali, Y. Sohn, J. H. Han, G. Song, S. H. Song, S. J. Hong
Summary: This study investigated the influence of nano dispersion on the thermoelectric properties of Bi2Te3 through the controlled incorporation of carbon nanofiber (CNF) into Bi0.5Sb1.5Te3 (BST) alloys. The BST/x-CNF composites were fabricated using high energy ball milling and spark plasma sintering, leading to a reduction in matrix grain size, improved electrical conductivity, decreased Seebeck coefficient, and decreased thermal conductivity compared to the bare samples. The peak ZT value of 0.95 was achieved for the 0.1 wt.% dispersed BST/CNF composites with a Vickers hardness value of 101.8 Hv.
ARCHIVES OF METALLURGY AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
