Article
Materials Science, Ceramics
Dan Chen, Guoqiang Chen, Mao Deng, Haomin Wang, Zhangyi Huang, Jianqi Qi, Tiecheng Lu
Summary: In this study, multi-walled carbon nanotubes (MWCNTs) were uniformly dispersed in aluminium nitride (AlN) powders, and the MWCNTs-doped AlN ceramics were sintered by spark plasma sintering. The effects of MWCNTs content on the microstructure and mechanical properties of the ceramics were investigated, and it was found that a doping amount of 2.5 wt% resulted in the highest relative density and hardness.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Shuyi Luo, Junting Luo, Qingxin Kang, Xunhu Xu, Guofeng Wang
Summary: This paper proposes a low-temperature Spark Plasma Sintering (SPS) method for preparing ZrTi/GH4169 alloy blanks. The addition of GH4169 alloy reduces the sintering temperature of ZrTi alloy. By sintering at 1000 degrees C, equiaxed grains of ZrTi alloy can be obtained, while sintering at 1100 degrees C produces billets with excellent strength and plasticity. The reticulated alpha-phase and Zr2(Fe,Ni) phase have a significant impact on the material properties of the 1100 degrees C sintered blanks.
MATERIALS CHARACTERIZATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Drahomir Dvorsky, Jiri Kubasek, Michaela Roudnicka, Filip Prusa, David Necas, Peter Minarik, Jitka Straska, Dalibor Vojtech
Summary: Powder size has a significant impact on the microstructure, mechanical, and corrosion properties of WE43 alloy, with smaller powder particles improving corrosion resistance but decreasing mechanical properties. HF pre-treatment of the powder can help reduce the corrosion rate of the compacted materials.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Kun Yang, Erofili Kardoulaki, Dong Zhao, Bowen Gong, Andre Broussard, Kathryn Metzger, Joshua T. White, Michael R. Sivack, Kenneth J. Mcclellan, Edward J. Lahoda, Jie Lian
Summary: Spark plasma sintering was used to fabricate Cr-incorporated UN composite fuels, and it was found that the addition of Cr improved the thermal conductivity, hardness, fracture toughness, and oxidation resistance of the fuels. The formation of a Cr enriched phase enhanced the liquid sintering characteristic. These findings are significant for enhancing the thermal-mechanical properties of UN fuels with well-maintained high fissile element density.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Engineering, Industrial
Xin Li, Weida Xin, Zhen'an Ren, Yanxin Wang, Wenquan Wang
Summary: AlN strengthening layers were prepared on the surface of Al-Si alloy substrate by nitrogen arc discharge, with the nitriding reaction being rapid and stable, enhancing wear resistance of the sample. Increase in nitriding current led to initial decrease and subsequent increase in volume loss during frictional wear test under lubricant condition, reaching its lowest value at 90 A.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Drahomir Dvorsky, Jiri Kubasek, Klara Hosova, Miroslav Cavojsky, Dalibor Vojtech
Summary: The paper explored the impact of microstructure condition on the ignition temperature, mechanical, and corrosion properties of WE43 alloy. Different processing techniques were found to result in varied microstructures, leading to differences in mechanical and corrosion properties. The addition of proper alloying elements and grain refinement were found to improve the overall performance of the alloy.
Article
Materials Science, Ceramics
Xiaoyu Mu, Zhaoqiang Chen, Shuai Zhang, Hui Chen, Guangchun Xiao, Mingdong Yi, Jingjie Zhang, Tingting Zhou, Chonghai Xu
Summary: Spark plasma sintering (SPS) is used to sinter Si3N4/TiC ceramic tool material, and the microstructure and mechanical properties under different sintering parameters are compared. The best sintering parameters are determined as heating the material to 1600 degrees C for 15 min, then heating to 1700 degrees C for 10 min. The material shows high mechanical properties with bending strength of 959 MPa, fracture toughness of 8.61 MPa·m(1/2), and Vickers hardness of 15.21 GPa. SPS enables the formation of uniform beta-Si3N4 with excellent mechanical properties through rearrangement, dissolution, precipitation, and transformation of Si3N4 particles.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Qusai Mistarihi, James Buckley, Joel Turner, Tim Abram
Summary: The fabrication and thermal conductivity of mixed-phase UN-UB2 composite pellets were investigated. The results showed that the fabricated composites had a higher thermal conductivity than UN at low temperatures, but the increase was less significant at higher temperatures and composites with low UB2 content had lower thermal conductivity.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jianjun Zhang, Ziqiao Wang, Jiajun Luo, Subin Wang, Bingliang Liang, Weihua Chen
Summary: The study shows that MoSi2@ZrO2 core-shell composites prepared by spark plasma sintering exhibit improved mechanical properties and oxidation resistance compared to pure MoSi2. The sintering temperature has a significant influence on the microstructure and performance of the composites. The research findings are of great importance for addressing the limitations of MoSi2 as a high temperature structural material.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Guoguo Zhang, Zhiwei Zhao, Hongjuan Zheng, Shijie Zhang, Zheng Chen, Shun Wang, Xiaomiao Zhao
Summary: By adding multi-walled carbon nanotubes and nano-tungsten carbide and using spark plasma sintering technology, the phase composition, microstructure, and comprehensive properties of Ti(C, N)-based cermets were investigated. The results showed that the prepared cermet under optimized conditions had a uniform microstructure and excellent comprehensive properties, with significantly increased hardness and fracture toughness.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Ceramics
Shuang Yin, Wei Wan, Xia Fang, Haiqiang Ma, Xinchun Xie, Cong Zhou, Tianyu Li, Ruzhong Zuo
Summary: This study successfully prepared aqueous Si3N4 slurries with excellent properties using two-grade Si3N4 powders, which greatly enhanced the mechanical properties of Si3N4 ceramics. The unique microstructure significantly improved the flexural strength and fracture toughness of Si3N4 ceramics, and these properties were achieved through the combination of gelcasting and gas pressure sintering.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Shufen Li, Lijuan Niu, Yabin Zhu, Jianlong Chai, Zhiguang Wang, Erqing Xie
Summary: This study investigated the influence of sintering temperature and particle size on the properties of ZrC/ZTA ceramic composites. The results showed that mu m-ZrC/ZTA composites had higher Vickers hardness and fracture toughness with increasing sintering temperature, but a degradation trend was observed at 1800 degrees C.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Composites
Seonmin Lee, Youjin Kim, Dabin Park, Jooheon Kim
Summary: The influence of crosslinkers and fillers on the properties of materials in digital light processing 3D printing was investigated, and it was found that the addition of aluminum nitride can significantly enhance the thermal conductivity of the material.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Ji Cheng Ding, Haijuan Mei, Qiuguo Li, Zhenting Zhao, Youqu Shen, Lixia Cheng, Rui Wang, Weiping Gong, Qimin Wang
Summary: In this study, Mo-V-Cu-N coatings were prepared by HIPIMS technique and showed high hardness and low friction coefficient. By adjusting the charge voltage, the optimized microstructure and friction performance of the coatings were achieved. The research results are of great significance for improving the wear performance of self-lubricating coatings.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yun Liu, Ruixiang Liu, Yuanhang Zheng, Jixue Zhao, Tianyi Sui, Xiaolei Li, Bin Lin
Summary: The mechanism of the influence of the sintering additive ratio on the microstructure evolution of Si3N4 ceramics was investigated. It was found that changing the ratio of Y2O3/MgSiN2 affected the composition of the liquid phase, leading to changes in densification process and phase transformation rate. Moreover, increasing the proportion of MgSiN2 and prolonging the sintering time enhanced the evaporation of the glass phase and improved the continuity of Si3N4 ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Nuttawat Parse, Sora-At Tanusilp, Wanthana Silpawilawan, Ken Kurosaki, Supree Pinitsoontorn
JOURNAL OF ELECTRONIC MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Wanthana Silpawilawan, Sora-at Tanuslip, Yuji Ohishi, Hiroaki Muta, Ken Kurosaki
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2020)
Correction
Materials Science, Multidisciplinary
Shinsuke Yamanaka, Ken Kurosaki, Masahito Katayama, Jun Adachi, Masayoshi Uno, Takeshi Kuroishi, Masatoshi Yamasaki
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Physics, Applied
Jiahui Fu, Sora-at Tanusilp, Masaya Kumagai, Yuji Ohishi, Ken Kurosaki
Summary: The performance of a thermoelectric module is evaluated by the dimensionless figure of merit zT, while the thermal expansion of materials is also a crucial consideration. A large difference in thermal expansion rates between n- and p-type materials can result in device failures and performance reduction over time, highlighting the importance of both zT and material compatibility for practical applications.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Dulyawich Palaporn, Wiyada Mongkolthanaruk, Sora-at Tanusilp, Ken Kurosaki, Supree Pinitsoontorn
Summary: This study fabricated flexible thermoelectric nanocomposites from bacterial cellulose and Ag2Se via a simple and inexpensive method, and demonstrated their excellent thermoelectric performance through experimental results. Moreover, the material exhibited high flexibility and scalability, making it suitable for industrial applications of modern flexible thermoelectric devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Sora-at Tanusilp, Masaya Kumagai, Yuji Ohishi, Naoki Sadayori, Ken Kurosaki
Summary: The study shows that Sn(SbTe2)(2) has a large anharmonicity, leading to its low thermal conductivity, making it an excellent thermoelectric material with relatively high thermoelectric figure of merit.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Chemistry, Physical
E. Kaewnuam, N. Wantana, S. Tanusilp, K. Kurosaki, P. Limkitjaroenporn, J. Kaewkhao
Summary: This study investigated the physical, structural, optical, shielding, thermal, and luminescent properties of WO3-Gd2O3-B2O3 glasses, with a focus on the impact of replacing WO3 with Gd2O3. The density of the glasses increased with higher concentrations of Gd2O3, while the optical absorption spectra showed absorbance in the ultraviolet and visible light regions. Despite a small degradation in shielding properties with increasing Gd2O3 content, the glass displayed strong photoluminescence and radioluminescence, making it a promising material for gamma-ray shielding and X-ray radiation detection applications at different temperatures.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Dulyawich Palaporn, Wiyada Mongkolthanaruk, Kajornsak Faungnawakij, Ken Kurosaki, Supree Pinitsoontorn
Summary: A flexible thermoelectric paper was successfully fabricated using bacterial cellulose/silver selenide nanocomposites. The in situ synthesis of silver selenide particles within the bacterial cellulose structure resulted in a homogeneous distribution of submicrosize particles, leading to enhanced thermoelectric properties. The hot-pressing process further improved the microstructure and increased the power factor of the paper.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuhei Kawajiri, Sora-at Tanusilp, Masaya Kumagai, Manabu Ishimaru, Yuji Ohishi, Junya Tanaka, Ken Kurosaki
Summary: By introducing gold (Au) into n-type Bi2Te3-xSex, the researchers successfully enhanced the thermoelectric properties, achieving a significant increase in zT value at room temperature and a 75% improvement, making it a promising candidate for assembling high-efficiency thermoelectric modules.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sora-at Tanusilp, Masaya Kumagai, Yuji Ohishi, Hideki Furusawa, Motoomi Suwabe, Ken Kurosaki
Summary: In this study, a highly dense bulk sample of ZrW2O8 was synthesized using spark plasma sintering technique, and its thermal conductivity, mechanical properties, and other physical properties were investigated. It was found that ZrW2O8 exhibited unique thermal properties and could be potentially used in thermal management areas.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Physics, Applied
Akinori Nishide, Sora-at Tanusilp, Wataru Kowa, Mitsuharu Yashima, Akira Nambu, Jun Hayakawa, Yuji Ohishi, Hiroaki Muta, Hidekazu Mukuda, Ken Kurosaki
Summary: The research demonstrates that by controlling the valence fluctuation, ytterbium silicide-based thermoelectric materials can achieve a high Seebeck coefficient and extremely low resistivity. This makes it possible to harvest energy from a cold source.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nuclear Science & Technology
Yifan Sun, Shiho Watanabe, Hiroaki Muta, Yuji Ohishi, Ken Kurosaki
Summary: Re-criticality analysis is crucial for safe retrieval and storage of the fuel debris at the Fukushima Dai-ichi Nuclear Power Plant. This study investigates the oxidation behavior and phase formation of Pu-doped and Gd-doped (U,Zr)O-2 solid solutions. Surrogate materials (CeO2) were used to mimic the behavior of PuO2. Analysis reveals the distribution and transformation of phases after oxidation.
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
(2023)
Review
Physics, Applied
Sora-at Tanusilp, Ken Kurosaki
Summary: Metal silicides, including the well-known Mg2Si, are promising candidates for thermoelectric applications due to their low toxicity and high stability. Rare-earth (RE) silicides, with their special behaviors of heavy fermion or mixed valence, exhibit unusually large Seebeck coefficient and thermoelectric power factor at low temperatures, making them potential advantages for low-temperature thermoelectric applications.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Nuclear Science & Technology
Yifan Sun, Yuji Ohishi, Junya Higaki, Hiroaki Muta, Ken Kurosaki
Summary: Following the Fukushima Daiichi nuclear power plant accident, the development of accident tolerant fuels (ATFs) has become important in promoting nuclear safety. This study investigates the properties of non-radioactive LaB6 and CeB6 to estimate the potential properties of UB6, a promising ATF with little known information. The comparison with UO2, UB2, and UB4 helps determine whether the fabrication of UB6 under high pressure or with other dopants is worthwhile for ATF development.
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Daiki Souda, Kazuto Shimizu, Yuji Ohishi, Hiroaki Muta, Takashi Yagi, Ken Kurosaki
ACS APPLIED ENERGY MATERIALS
(2020)