Results 171 to 180 of about 951 (206)

The electric field gradient at Ta in HfB2

Journal of Physics and Chemistry of Solids, 1973
Abstract Using the time-differential perturbed-angular correlation technique, we have observed the nuclear electric quadrupole interaction at 181 Ta (482 keV) as an impurity in the refractory compound HfB 2 . The measured interaction frequency is ν Q =730±5 MHz which corresponds to an electric field gradient of | eq |=(1·19±0·05)×10 18 V/cm 2 at
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Fabrication and properties of HfB2 ceramics based on micron and submicron HfB2 powders synthesized via carbo/borothermal reduction of HfO2 with B4C and carbon

International Journal of Refractory Metals and Hard Materials, 2015
Abstract The two batches of commercially available powders were used as raw materials to synthesize HfB2 powders. The synthesized HfB2 powders were heated at 450 °C for 10 min in the flow of nitrogen and then quenched into liquid nitrogen. The results indicated the refinement effect of liquid nitrogen quenching on synthesized HfB2 powders was very ...
Zhi Wang, Xin Liu, Baosheng Xu, Zhanjun Wu   +3 more
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Preparation and Properties of Hfb2-Hfc and Hfb2-Hfc-Mob Composites By Reactive Spark Plasma Sintering

SSRN Electronic Journal, 2022
Yangshuo Bai, Weixia Shen, Chao Fang, Liangchao Chen, Qianqian Wang, Biao Wan, Xiaopeng Jia, Yuewen Zhang, Zhuangfei Zhang   +8 more
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Reactions in the HfB2-Mo system

Soviet Powder Metallurgy and Metal Ceramics, 1979
S. S. Ordan'yan, N. M. Maksimova, V. V. Smirnov   +2 more
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Interaction in the system B4C-HfB2

Soviet Powder Metallurgy and Metal Ceramics, 1989
S. S. Ordan'yan, A. I. Dmitriev
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Dispersant-assisted preparation of ultra-fine HfB2 powder

Applied Surface Science, 2022
Tianxu Wang, Zhen Wang, Chenguang Hu, Xinyang Li, Zhulin Huang, Xiaoye Hu, Yue Li   +6 more
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Effect of La 2 O 3 content on the oxygen barrier ability of the HfB 2 ‐SiC coating at 1973 K

Journal of the American Ceramic Society, 2023
Deyu Qian, Yuexing Chen, Xuanru Ren
exaly  

Mechanical Activation Assisted Self-Propagating High-Temperature Synthesis of HfB2–HfC Composites

International Journal of Self-Propagating High-Temperature Synthesis, 2023
A Yu Potanin, Yu S Pogozhev, Zaitsev A A
exaly  

Reactions of HfB2 with Re and Cr

Soviet Powder Metallurgy and Metal Ceramics, 1980
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Enhanced oxygen blocking properties of HfB2-SiC coating by LaB6-HfB2 synergistic reinforcement

Surface and Coatings Technology
Xiang Ji, Binbin Wu, Youkui Zhang, Peipei Wang, Yuexing Chen, Philipp V. Kiryukhantsev-Korneev, Evgeny A. Levashov, Ji Shi, Xuanru Ren   +8 more
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