Article
Materials Science, Multidisciplinary
M. P. Kamil, D. Sandyaning, A. S. Wismogroho, K. Corneliasari, B. Hermanto, T. Sudiro, A. Afandi
Summary: This study investigated a Ni-38Mo binary alloy, focusing on Ni solid solution and Ni-Mo intermetallic phases. A homogeneous Ni-Mo alloy powder obtained by mechanical alloying was consolidated using spark plasma sintering (SPS). The main phases observed after sintering were a Ni(Mo) solid solution and the delta-NiMo intermetallic phase.
Article
Materials Science, Ceramics
Yuki Jimba, Sosuke Kondo, Hao Yu, Haoran Wang, Yasuki Okuno, Ryuta Kasada
Summary: A new sintering process called TLPDS has been developed for high-melting-point borides, using a eutectic TiB-Ti powder as the sintering aid. This approach has successfully improved the sinterability of TiB2.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ruoyu Chen, Adam Bratten, Joshua Rittenhouse, Haiming Wen
Summary: The use of mechanically alloyed Al2O3-Y2O3 mixtures as sintering additives can promote liquid phase sintering of SiC, but prolonged ball milling time results in an excessive volume of complex oxide phases in the sintered specimens, negatively affecting the mechanical properties of SiC specimens.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Anna Knaislova, Vendula Simunkova, Pavel Novak, Filip Prusa, Marcello Cabibbo, Lucyna Jaworska, Dalibor Vojtech
Summary: Intermetallic alloys based on Ti-Al-Si system are significant for their excellent high-temperature properties, but high brittleness at room temperature is a main concern. Adding alloying elements has been attempted to improve the properties, but porous microstructure remains a challenge.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xing Liu, Yufei Wang, Wei Qian, Shangkun Shen, Liyu Hao, Yong Fan, Kunjie Yang, Engang Fu
Summary: Alloying with heterogeneous atoms or second phase particles is an effective method for inhibiting grain growth and achieving ultrafine and nanocrystalline materials. The synergistic effects of dual-particle reinforcement on sintering behavior and final bulk W alloys were investigated by varying the component and content of Ti and ZrC. The results showed that adding both Ti and ZrC not only suppresses grain growth but also promotes relative density, resulting in the successful fabrication of nanocrystalline W-3Ti-1ZrC bulks with ultra-high hardness of 1347 kgf/mm2.
Article
Materials Science, Multidisciplinary
Borna Nejat, Iman Ebrahimzadeh, Mahdi Rafiei
Summary: In this study, the Ti2AlC MAX phase was synthesized using mechanical alloying and spark plasma sintering. The effects of alloying time and sintering temperature on the properties of the samples were investigated. The best specimen had a density of 4.2 g/cm³ and a hardness of 995 HV.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Jun Zhou, Hengcheng Liao, Hao Chen, Aijing Huang
Summary: A non-equiatomic high entropy alloy was successfully synthesized by mechanical alloying plus spark plasma sintering, showing higher compression yield strength and smaller grain size than alloys prepared by arc-melting method. This is mainly attributed to the combined effects of dislocation hardening, fine grain strengthening and precipitation hardening of second phase particles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
C. Jia, M. R. Akbarpour, M. Ahmadi Gharamaleki, T. Ebadzadeh, H. S. Kim
Summary: Equiatomic Ni-Ti alloy reinforced with SiC nanoparticles of different volume percentages was synthesized through mechanical alloying and microwave sintering. The addition of SiC nanoparticles increased the content of hard Ni3Ti phase, promoted the stability of the martensite phase, and inhibited matrix grain growth. The high microhardness of the synthesized nanocomposites is attributed to the formation of Ni3Ti and NiTi martensitic phases and their nanocrystalline structure.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jiang Wu, Xuguang An, Jing Zhang, Shaofeng Lei, Yi Guo, Xiwei Xu, Weitang Yao, Qingyuan Wang, Qingquan Kong
Summary: Ti-24Nb-4Zr-3Mn alloys were prepared using mechanical alloying and spark plasma sintering. The study found that increasing the milling time reduces the particle size of the alloy powder, but increases the oxygen content. Among all the investigated alloys, Ti-24Nb-4Zr-3Mn alloy prepared by 20-hour milling showed excellent comprehensive mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Manufacturing
M. A. Karimi, M. Shamanian, M. H. Enayati, M. Adamzadeh, M. Imani
Summary: In this study, a magnetic CoCuFeMnNi high entropy alloy (HEA) was successfully synthesized and shown to have a stable solid solution state. The alloy exhibited high magnetic saturation and low coercivity field under an applied magnetic field. Furthermore, it demonstrated a low wear rate and low coefficient of friction at high temperatures.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Ceramics
A. P. Klishin, S. A. Ghyngazov, S. V. Rudnev, A. N. Zakutaev, O. A. Golovanova
Summary: The application of an external magnetic field during sintering of ZrO2-based ceramics resulted in lower sintering temperatures and improved ceramic quality, with more perfect crystallographic forms and increased crystallinity compared to sintering without a magnetic field. The presence of a constant magnetic field led to the formation and stabilization of high-temperature phases in zirconium dioxide, as well as improved physical and mechanical characteristics in the resulting oxide ceramics.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jeong-Han Lee, Ik-Hyun Oh, Ju-Hun Kim, Sung-Kil Hong, Hyun-Kuk Park
Summary: In this study, WC-based hard materials were fabricated by spark plasma sintering, and their mechanical properties were improved through mechanical alloying. The non-isothermal sintering kinetics were found to affect densification behavior, and the addition of ZrSiO4 enhanced fracture toughness.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Kan Chen, Ruizhi Zhang, Jan-Willem G. Bos, Michael J. Reece
Summary: The successful synthesis of a single-phase high-entropy half-Heusler compound through mechanical alloying and spark plasma sintering allows for a homogeneous distribution of multiple elements in the samples. The stability of the samples, as well as the ability to exhibit both n-type and p-type semiconductor behavior by adjusting the Fe/Co ratio, indicate the promising potential of the high-entropy concept in extending composition range and tuning thermoelectric properties for half-Heusler materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Rana Ghannam, Adrien Moll, David Berardan, Loic Coulomb, Antonio Vieira -E-Silva, Benjamin Villeroy, Romain Viennois, Mickael Beaudhuin
Summary: This article reports the effect of nano-structuring and purity on the thermal and thermoelectric properties of alpha-SrSi2. The results show that nanostructured pellets with a grain size of about 200 nm can be obtained using ball milling and spark plasma sintering, which reduces the lattice contribution to the thermal conductivity. The figure of merit ZT is improved to 0.20 around room temperature after nano-structuring. The influence of Sr purity on the thermoelectric properties is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jongmin Byun, Hyeunhwan An, Jaeyoung Hong, Dong Won Chun, Jaeyun Moon
Summary: Polycrystalline SnSe samples were prepared through mechanical alloying, uniaxial compaction, and pressureless sintering, showing a transition in Seebeck properties due to imbalanced composition caused by impurities formed during sintering. The study suggests the potential to enhance thermoelectric properties by controlling the sintering conditions effectively.
APPLIED SURFACE SCIENCE
(2021)
Article
Polymer Science
Asma M. Alturki, Dalia E. Abulyazied, Mohammed A. Taha, H. M. Abomostafa, Rasha A. Youness
Summary: The nanocomposites prepared by mixing different contents of borosilicate glass and carbonated hydroxyapatite exhibited unexpected results during sintering, with the increase in borosilicate glass content leading to partial decomposition of the hydroxyapatite and enhanced bioactivity behavior, as well as improvements in mechanical properties including hardness, strength, and moduli.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Chemistry, Physical
Waheed S. AbuShanab, Essam B. Moustafa, E. Ghandourah, Mohammed A. Taha
Summary: In this study, a hybrid nanocomposite Al-Si matrix was successfully fabricated using powder metallurgy method, resulting in strengthened matrix and improved mechanical properties. By adding varying weight percentages of VC and FA nanoparticles, the alloy particle sizes were reduced and wear/corrosion resistance was increased. The hybridized composites showed significantly enhanced mechanical performance and microstructure under sintering conditions.
Article
Chemistry, Physical
Essam B. Moustafa, Mashhour A. Alazwari, Waheed Sami Abushanab, Emad Ismat Ghandourah, Ahmed O. Mosleh, Haitham M. Ahmed, Mohamed A. Taha
Summary: Two successive methods were used to improve the grain structure and properties of Al 5052 aluminum alloy: the addition of titanium and boron during casting, and single- and double-pass friction stir processing (FSP). The Ti-B modifiers significantly improved the mechanical and physical properties, with only a 3% increase in microhardness. Grain refinement had significant effects on thermal expansion and corrosion rate.
Review
Chemistry, Physical
Rasha A. Youness, Doha M. Tag El-deen, Mohammed A. Taha
Summary: This article discusses the importance of bone biomaterials in clinical applications, as well as the advantages and limitations of Ca-Si ceramics, and proposes potential solutions. The article introduces the types of bone substitute materials and their applications.
Article
Chemistry, Physical
Ghazi Alsoruji, Essam B. Moustafa, Mahmoud A. Alzahrani, Mohammed A. Taha
Summary: The main objective of this research is to improve the mechanical and wear characteristics of a silicon bronze alloy without affecting its electrical properties. Through the addition of Ti3AlC2 MAX phase and granite powders, hybrid nanocomposites were prepared using the powder metallurgy technique. The experimental results showed that the addition of hybrid ceramics effectively reduced particle sizes and significantly improved the mechanical properties of the nanocomposites without sacrificing their electrical properties.
Article
Materials Science, Multidisciplinary
Ahmed B. Khoshaim, Essam B. Moustafa, Mashhour A. Alazwari, Mohammed A. Taha
Summary: This study fabricated hybrid nanocomposite matrices using aluminum AA7075, graphene nanoplates (GNP), boron nitride (BN), and vanadium carbide (VC). BN and VC acted as secondary reinforcement particles, while graphene (GNP) played a key role in the hybridization process. Friction stir processing (FSP) was utilized for manufacturing the composite matrix, which improved the microstructure's grain refinement and reinforcement, limiting grain growth during dynamic recrystallization. The addition of BN and VC decreased the grain sizes of the nanocomposites significantly. The mechanical characteristics of the hybrid composites were also enhanced due to the uniform dispersion of the reinforcement particles and the homogeneity of the hybridization process.
Article
Chemistry, Multidisciplinary
Shams A. M. Issa, Abeer M. M. Almutairi, Karma Albalawi, Ohoud K. K. Dakhilallah, Hesham M. H. Zakaly, Antoaneta Ene, Dalia E. E. Abulyazied, Sahar M. M. Ahmed, Rasha A. A. Youness, Mohammed A. A. Taha
Summary: The main objective of this work is to recycle unwanted industrial waste to produce innovative nanocomposites with improved mechanical, tribological, and thermal properties. Using powder metallurgy technique, iron/copper/niobium carbide/granite nanocomposites were fabricated. The addition of NbC and granite nanoparticles significantly improved the mechanical properties of the nanocomposites.
Article
Materials Science, Multidisciplinary
Mashhour A. Alazwari, Essam B. Moustafa, Ahmed B. Khoshaim, Mohammed A. Taha
Summary: This study successfully utilized the powder metallurgy technique to produce hybrid Ti-7% Cu (vol%) matrix nanocomposites (TMNCs) reinforced with activated carbon and silica fume at a reduced sintering temperature. The addition of hybrid reinforcements led to improved microstructure, mechanical properties, and wear resistance as evidenced by XRD analysis, microhardness, and wear rate measurements. The results indicated that activated carbon and silica fume can serve as excellent reinforcements in TMNCs.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Waheed Sami Abushanab, Essam B. Moustafa, Emad S. Goda, Emad Ghandourah, Mohammed A. Taha, Ahmed O. Mosleh
Summary: The study investigates the use of vanadium and niobium carbides to enhance the AA6061 alloy surface through the friction stir process (FSP). The mechanical and physical properties, as well as the microstructure, were evaluated to understand the effect of ceramic particle additives on the aluminum alloy composites. The results showed that the reinforcement particles significantly improved the mechanical and physical properties, with the hybrid composite AA6061/NbC + VC exhibiting a higher compressive stress, yield stress, hardness, and decreased coefficient of thermal expansion (CTE) compared to the base metal, as well as reduced corrosion rate.
Article
Materials Science, Multidisciplinary
Waheed Sami Abushanab, Essam B. Moustafa, Emad Ismat Ghandourah, Hossameldin Hussein, Mohammed A. Taha, Ahmed O. Mosleh
Summary: This study examines the effects of incorporating a mixture of hard and soft reinforcement particles on the microstructure and mechanical and physical properties of a high-strength aluminum alloy, AA7075. Friction stir processing was used to composite the alloy surface, with vanadium carbide (VC) as the hard reinforcement and boron nitride (BN) and graphene nanoplates (GNPs) as the soft reinforcements. The composites produced using these reinforcements showed significant grain refinement and improvements in microhardness, ultimate compressive strength, thermal properties, and electrical conductivity.
Article
Chemistry, Physical
Rasha A. Youness, Mahmoud F. Zawrah, Mohammed A. Taha
Summary: Amorphous ZnO-containing calcium silicate nano powders were prepared by sol-gel technique and then calcined at different temperatures. XRD, FTIR, and TEM were used to examine the synthesized powders, and their physical, microstructural, mechanical, and electrical properties were studied after sintering at different temperatures. The results showed that the synthesized nano powders remained amorphous up to 800 degrees C, but crystalline calcium silicate ceramic was formed at 1000 degrees C. The sintered ceramics displayed improved physical and mechanical properties with increasing sintering temperature and zinc content.
Article
Materials Science, Multidisciplinary
Mohammed A. A. Taha, M. M. El-zaidia, Mai Z. Z. Zaki, H. M. Abomostafa
Summary: Cu-matrix hybrid nanocomposites were prepared using powder metallurgy process with varying amounts of silicon carbide (SiC) and fly ash nano particles. XRD and TEM were used to describe the microstructure of the produced powders. The sintered samples' microstructure, mechanical, wear, thermal, and electrical characteristics were examined. The results showed that adding SiC and fly ash ceramics successfully decreased particle sizes and improved the properties of the nanocomposites.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Applied
Rasha A. Youness, Hisham A. Saleh, Mohammed A. Taha
Summary: This study utilized hydroxyapatite (HA) and alumina (Al2O3) to create nanocomposites for biomedical applications. X-ray diffraction (XRD) technique was used to examine the phase composition, crystal size, and physical properties of the nanocomposites. The results showed that adding Al2O3 improved the mechanical properties of the nanocomposites but also increased their porosity.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2023)
Article
Chemistry, Applied
Safae Ramadan, Mohammed A. Taha, Wafaa M. El-Meligy, Heba A. Saudi, Mahmoud F. Zawrah
Summary: The main goal of this study was to improve the microstructure and physicomechanical properties of aluminum matrix composites by adding graphene lubricant. The results showed that graphene particles were uniformly distributed in the aluminum matrix after milling, and the milled powders had a particle size of about 31.6 nm. Both sintering temperature and graphene content played significant roles in determining the mechanical properties of the sintered composites. The highest obtained microhardness and compressive strengths were achieved in the composite containing 0.8 wt.% of graphene (AG0.8).
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rasha A. Youness, Mohammed A. Taha
Summary: The Al2024 matrix composites reinforced with nano-ZrO2 particles showed significant improvement in physical and mechanical properties. The addition of ZrO2 increased the microhardness, ultimate strength, and elastic moduli of the composites, while decreasing the fracture strain. The wear rate decreased with the increase of reinforcement content, but increased with the increase of sliding distance and applied load.
EGYPTIAN JOURNAL OF CHEMISTRY
(2022)