Article
Materials Science, Multidisciplinary
Solomon-Oshioke Agbedor, Hong Wu, Yaojia Ren, Jingbo Liu, Luxin Liang, Qingge Wang, Ian Baker
Summary: In this study, MPEAs with a combination of BCC and FCC phases were prepared using composition optimization, mechanical alloying, and powder sintering. The phase evolution and composition were investigated, and it was found that the addition of Ti could enhance the mechanical properties of the alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Ceramics
Nazli Akcamli, Berk Senyurt
Summary: The microstructural and mechanical properties of B4C particulate-reinforced Al-Si-Cu matrix composites prepared by mechanical alloying were investigated. The composites exhibited improved hardness, wear resistance, and compressive strength compared to the as-blended case, with further enhancement after an age-hardening treatment.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Yaqian Liang, Qian Lei, Xiukuang Zhang, Dong Jiang, Yunping Li
Summary: A Cu-5 wt% Mo alloy with high conductivity and high anti-soften temperature was successfully fabricated using mechanical alloying combined with spark plasma sintering (SPS). The rolled and aged Cu-5 wt% Mo alloy exhibited improved density, electrical conductivity, and anti-soften temperature.
MATERIALS TODAY COMMUNICATIONS
(2022)
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
Materials Science, Multidisciplinary
Berk Senyurt, Burak Kucukelyas, Mustafa Bellek, Sina Kavak, Gokce Borand, Deniz Uzunsoy, Duygu Agaogullari, Nazli Akcamli
Summary: In this study, FLG reinforced Al-10 wt% Si-2 wt% Cu matrix composites were fabricated using a powder metallurgical route. The effects of FLG addition on the properties of the composites were investigated. The results showed that FLG improved the hardness and wear rate of the composites, but reduced the compressive strength and corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Nanjie Sun, Yong Cheng, Tianbin Zhu, Liping Pan, Ning Liao, Heng Wang, Yawei Li, Jinning Dai, Zhipeng Xie, Shaobai Sang
Summary: In this study, the influence of graphene nanoplatelets (GNPs) on the densification, microstructure, and mechanical properties of binerless tungsten carbide (BTC) ceramics was evaluated. It was found that the BTC ceramics produced had the densest microstructure and optimal mechanical characteristics when the GNPs content reached up to 0.2 wt%.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
R. Wang, C. F. Fang, Z. Y. Xu, Y. M. Wang
Summary: Through mechanical alloying, Mg2Sn phase with different structures can be obtained at different milling times in Mg-25Sn mixtures, leading to the improvement of mechanical properties in sintered materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Pavel Andreev, Pavel Drozhilkin, Lyudmila Alekseeva, Ksenia Smetanina, Elena Rostokina, Stanislav Balabanov, Maksim Boldin, Artem Murashov, Gleb Shcherbak
Summary: The ceramic samples made from silicon nitride (Si3N4) powder mixtures fabricated by spark plasma sintering were investigated. Wet chemical methods were used to prepare the powder mixtures from commercial alpha-Si3N4 powder and Y2O3-Al2O3 sintering additive. The sintering process, powder mixtures, and ceramic samples were characterized, and the properties such as density, microhardness, and fracture toughness were measured. The amount of sintering additive affected the shrinkage temperature and the amount of beta-Si3N4 in the ceramics.
Article
Metallurgy & Metallurgical Engineering
Chongfeng Sun, Shengqi Xi, Xiaofeng Dang, Jianping Li, Yongchun Guo, Zhong Yang, Yaping Bai
Summary: This paper comprehensively studies the microstructure characteristics and phase transitions of Fe-19 wt%Cr-9 wt%Ni nanocrystalline alloy during mechanical alloying and hot pressing sintering processes. The corrosion resistance of the sintered alloy samples is further analyzed and shows excellent properties compared to commercial 304 stainless steel.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Chemistry, Physical
M. Venkat Reddy, Prasanta Kumar Sahoo, A. Krishnaiah, P. Ghosal, T. K. Nandy
Summary: Mo-30-40 wt% Cu nanocomposites with average size lower than 50 nm were synthesized using Mo(CO)6 and [Cu(acac)2]. XRF analysis was used to determine the composition of Mo-Cu nanocomposites. The sintering of Mo-Cu composites was achieved using spark plasma sintering. X-ray diffraction studies showed the transformation of amorphous Mo-phase and FCC Cu-phase to crystalline BCC Mo and FCC Cu-phase after sintering. The sintering temperature significantly affected the relative density and mechanical properties of Mo-Cu compacts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ramazan Sobhanverdi, Alireza Akbari
Summary: In-situ Cu/NbC, Cu/NbC-WxC, and Cu/WxC nanocomposites were fabricated through mechanical alloying and then consolidated through Equal Channel Angular Pressing. The microstructure, phase constituent, and hardness of the powders were investigated. The results showed that the Cu matrix size and carbide particle size were refined, and WC and W2C phases were formed during consolidation. Cu5Nb5W exhibited the highest hardness due to its smaller Cu matrix size and finer carbide particles, indicating the successful synthesis of tailored Cu-based nanocomposites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Materials Science, Multidisciplinary
Yanqiong Zhang, Ju Zhou, Chunxiao Ren, Mamdouh Omran, Ju Tang, Fan Zhang, Guo Chen
Summary: In this study, nTi-3Y-ZrO2 composite ceramics were successfully prepared using the mechanical alloying-microwave sintering method, and their properties were comprehensively characterized. The results showed that the samples exhibited good phase composition, stability, and relative density at a specific sintering temperature, and demonstrated excellent performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Chongfeng Sun, Yongchun Guo, Zhong Yang, Jianping Li, Shengqi Xi, Ziqi Jie, Tao Xu
Summary: Refractory high entropy alloy WTaMoNb was incorporated into a Cu matrix to synthesize WTaMoNb/Cu nanocomposite, with BCC/FCC structure, via two-step mechanical alloying and hot pressing sintering. The resulting Cu-10wt.%WTaMoNb alloy exhibited excellent thermal stability, high tensile strength, and electrical conductivity.
Article
Materials Science, Multidisciplinary
Liying Yao, Yimin Gao, Yefei Li, Xiaoyu Huang, Yiran Wang, Yijie Huang
Summary: The nanostructural oxide dispersion strengthened (ODS) Mo alloy was successfully fabricated through mechanical alloying and spark plasma sintering. The study found that the mechanical alloying process refines the powder and promotes the dissolution of interstitial atoms, but introduces impurities. The optimized spark plasma sintering parameters resulted in high relative density and improved mechanical properties.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Rasha A. Youness, Mohammed Said Amer, Mohammed A. Taha
Summary: This study aimed to improve the performance of biphasic calcium phosphate (BCP) for bone replacement applications. By adding zirconia (ZrO2), the nanocomposites exhibited enhanced tribological and mechanical properties, with reduced particle sizes. The implanted nanocomposite also demonstrated excellent bioactivity.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Essam B. Moustafa, Anastasia V. Mikhaylovskaya, Mohammed A. Taha, Ahmed O. Mosleh
Summary: In this study, hybrid metal-matrix-surface composites (HMMSC) were fabricated using the friction stir process (FSP), with hexagonal boron nitride (HBN) as the main reinforcement for improving the tribological behavior of AA7075 aluminum alloy. Additional secondary reinforced particles, including silicon carbide (SiC), tantalum carbide (TaC), and niobium carbide (NbC) nanoparticles, were used to enhance resistance to deformation, chemical stability, and grain growth control. The hybridization process resulted in uniform distribution of the reinforcing particles and significant grain refinement. The hybrid composites exhibited improved mechanical properties and wear resistance compared to the base alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Mohammed A. Taha, M. F. Zawrah, H. M. Abomostafa
Summary: In this study, sintered Al/Al2O3 hybrid composites reinforced with varying amounts of SiC and graphene were prepared using aluminum dross waste. The effects of reinforcement content and sintering temperature on the properties of the composites were investigated. The results showed improvements in physical, mechanical, and electrical properties with increasing SiC and graphene content as well as sintering temperature.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Mahmoud F. Zawrah, Ahmed R. Wassel, Rasha A. Youness, Mohammed A. Taha
Summary: Improper disposal of industrial wastes causes environmental pollution. Recycling these wastes for new product fabrication has become an interesting research topic. This study prepared sintered mullite-containing ceramics from aluminum dross and silica fume waste materials. The amount of mullite phase increased with higher sintering temperature and silica fume content, while apparent porosity and bulk density decreased. Moreover, increasing mullite content led to decreased microhardness, compressive strength, Young's modulus, and electrical conductivity, but improved fracture toughness.
CERAMICS INTERNATIONAL
(2022)
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)