Results 261 to 270 of about 13,934 (307)

Research on Mechanical Characteristic of Micro-Nano Structure TaC Ceramic by Nanoindentation

Advanced Materials Research, 2015
Micro-nanostructure tantalum carbide (TaC) ceramic was prepared on grey cast iron matrix by the combined process of casting and heat treatment. The theoretical foundation of the nanoindentation technique was introduced in detail, and hardness/modular–displacement curve was received from continuous stiffness measurement (CSM).
Tian Tian Shao, Xiao Long Cai, Jie Fang Wang, Li Sheng Zhong, Na Na Zhao, Yun Hua Xu   +5 more
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Ti(C,N)-based cermet with different TaC/(TaC+WC) weight ratio by in-situ reactive hot pressing: Microstructure and mechanical properties

Materials Today Communications, 2020
Abstract To further improve the mechanical properties of the Ti(C,N)-TiB2-Co cermets prepared by in-situ reaction hot pressing, the TaC and WC were added in Ti-C-BN-Co system. The effect of varying TaC/(TaC + WC) weight ratio on the microstructure and mechanical properties of the cermets was studied by scanning electron microscope, X-ray diffraction,
Xianrui Zhao, Mengxian Zhang, Dunwen Zuo, Yihang Fang, Qiangyong Zhang, Zhengyu Zhu, Guixiang Liu, Feng Xu   +7 more
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Carbothermal synthesis of TaC whiskers via a vapor-liquid-solid growth mechanism

Journal of Materials Research, 1997
Tantalum carbide whiskers have been synthesized via a vapor-liquid-solid (VLS) growth mechanism in the temperature region 1200–1300 °C in nitrogen or argon. The starting materials consisted of Ta2O5, C, Ni, and NaCl. Carbon was added to reduce tantalum pentoxide, via a carbothermal reduction process, and Ni was used to catalyze the whisker growth ...
M. Johnsson, M. Nygren
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Microstructure and mechanical properties of the spark plasma sintered TaC/SiC composites

Materials Science and Engineering: A, 2011
Abstract TaC/SiC composites with 5–40 vol.% 6H–SiC were fabricated by spark plasma sintering at 1800 °C for 5 min. Effects of SiC concentrations on the densification, microstructure, and mechanical properties of the materials were investigated. The results showed the densification process of the TaC/SiC composites was composed of six sequent stages ...
Limeng Liu, Feng Ye, Zhiguo Zhang, Yu Zhou   +3 more
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Synergistic removal of U(VI) from aqueous solution by TAC material: Adsorption behavior and mechanism

Applied Radiation and Isotopes, 2022
The adsorption and recovery of uranium from wastewater is of positive significance to the development of nuclear industry and environmental remediation. The ternary polymer (PZS-co-TA) was prepared from hexachlorocyclotriphosphazene (HCCP), 4,4-sulfonyldiphenol (BPS) and tannic acid (TA) under ultrasonic. TAC was then obtained after carbonization under
Yunyun, Bao, Yan, Liu, Changfu, Wang, Yun, Wang, Dingzhong, Yuan, Jianda, Xu, Zuqing, Zhu, Yan, He, Jinbiao, Liu   +8 more
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Investigation on the ablation performance and mechanism of HfC coating modified with TaC

Corrosion Science, 2020
Abstract HfC coatings modified with different TaC contents were designed and successfully deposited on SiC-coated carbon/carbon (C/C) composites by supersonic atmosphere plasma spraying. The phase composition, morphology, and ablation resistance were surveyed, and the structural evolution of the oxide layer was studied as well. Results indicated that
Guanghui Feng, Hejun Li, Li Yang, Bo Li, Jianwei Xu, Xiyuan Yao   +5 more
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Sintering Mechanism and Microstructure of TaC/SiC Composites Consolidated by plasma-activated sintering

Ceramics International, 2020
Abstract TaC/SiC composites with 5 wt% SiC addition were densified by plasma-activated sintering (PAS) at 1500–1800 °C for 5 min under 30 MPa. The effects of plasma-activated sintering on microstructures, densification and mechanical properties of the composites were investigated. The results showed that TaC/SiC composites achieved a relative density
Jianian Hu, Guoqiang Luo, Jian Zhang, Yi Sun, Qiang Shen, Lianmeng Zhang   +5 more
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Densification, Mechanical Properties, and Oxidation Resistance of TaC–TaB ₂ Ceramics

Journal of the American Ceramic Society, 2008
The densification of tantalum carbide (TaC) was enhanced by adding 10 wt% (11 vol%) TaB 2 , reaching 98.6% relative density by hot pressing at 2100° or 2200°C using a 30 MPa applied pressure.
Xiaohong Zhang, Gregory E. Hilmas, William G. Fahrenholtz   +2 more
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Role of Interfaces on Multi‐length Scale Wear Mechanics of TaC‐based Composites

Advanced Engineering Materials, 2017
In the current work, contact‐mechanics at different length scale is utilized to correlate damage accumulation in TaC‐based composites. Upon synergistic reinforcement with silicon carbide (SiC) and carbon nanotubes (CNTs), TaC has shown to reduce the wear rate from 10.5 × 10−7 to 4.1 × 10−7 mm3 N−1 m−1 upon fretting (micro‐wear) and from 8.0 to 2.7 mm3 ...
Ambreen Nisar, Kantesh Balani
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Microstructure and Mechanical Properties of Spark Plasma Sintered TaC _0.7 Ceramics

Journal of the American Ceramic Society, 2010
The TaC 0.7 composition was spark plasma sintered (SPS) at 1600°–1900°C using TaC and Ta as the starting powders. Densification process, phase evolution, microstructure development, and the mechanical properties of the composites were investigated.
Liu Limeng, Ye Feng, Zhou Yu, Zhang Zhiguo   +3 more
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