Nanostructured yttria dispersion-strengthened tungsten synthesized by sol-gel method
Nanostructured yttria dispersion-strengthened tungsten synthesized by sol-gel method
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溶胶凝胶法合成纳米氧化钇弥散强化钨
DOI：
10.1016/j.jallcom.2015.10.059
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发表时间：
2016-02-05
影响因子：
6.2
通讯作者：
Dai, Y.
中科院分区：
文献类型：
--
作者：
Liu, R.;Xie, Z. M.;Dai, Y.
Yttria dispersion-strengthened tungsten with both enhanced strength and ductility was synthesized through sol-gel method followed by sintering and high-temperature swaging. The sol-gel synthesis process involving a molecular-level doping leads to a unique nanostructure that Y2O3 nano-particles were homogeneously dispersed in tungsten grains interior. The nanosized Y2O3 particles in sol-gel synthesized W-1%Y2O3 are stable in size even under a high sintering temperature of 2300 degrees C. The swaged sol-gel W-1%Y2O3 show ductility at a relative low temperature of 250 degrees C, which is about 100 degrees C and 250 degrees C lower than that of spark-plasma-sintered sol-gel W-1%Y2O3 and ball-milling synthesized W-1%Y2O3, respectively. The sol-gel method provides a promising access to high-performance nanostructured tungsten materials with both high strength and ductility, and can be easily scaled for industrial production. (C) 2015 Elsevier B.V. All rights reserved.
