Microstructural evolution and mechanical behavior of porous W reinforced by in-situ W2C

Shen Qiang; Ge Shuai; Zhao Aoao; Sun Yi; Zhang Jian; Zhou Dongqing; Luo Guoqiang; Zhang Lianmeng

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Microstructural evolution and mechanical behavior of porous W reinforced by in-situ W2C

机译：原位W2C加固多孔W的微观结构演化与力学行为

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Porous tungsten reinforced by W2C was prepared by tape casting using NaCl space holder. The results showed that stable W-NaCl tapes had been produced, a porous foam with a controllable porosity was finally formed. The large pores created by the space holder were 4 mu m, and the small pores induced by powder sintering were 1 mu m. The C atoms introduced by organic additives transform the powder sintering into reaction-sintering, and help the in-situ formation of the W2C ceramic phase, contributing to massive improvements in strength. With the increasing of sintering temperature, the porosity decreased and the compressive strength increased. The content of the NaCl was linear with porosity, but tended to vary inversely with the compressive strength. (C) 2019 Elsevier B.V. All rights reserved.

机译：通过使用NaCl空间夹持器通过胶带铸造制备W2C的多孔钨。结果表明，最终形成稳定的W-NaCl胶带，最终形成具有可控孔隙率的多孔泡沫。由空间夹持器产生的大孔是4μm，粉末烧结诱导的小孔为1μm。有机添加剂引入的C原子将粉末烧结转化为反应烧结，并帮助原位形成W2C陶瓷相，有助于大量的强度改善。随着烧结温度的增加，孔隙率降低，抗压强度增加。 NaCl的含量与孔隙率线性，但倾向于与抗压强度相反。（c）2019 Elsevier B.v.保留所有权利。

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来源
《Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics》 |2019年第2019期|共9页
作者
Shen Qiang; Ge Shuai; Zhao Aoao; Sun Yi; Zhang Jian; Zhou Dongqing; Luo Guoqiang; Zhang Lianmeng;
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作者单位

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

Wuhan Univ Technol State Key Lab Adv Technol Mat Synth &

Proc Wuhan 430070 Hubei Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类合金学与各种性质合金;金属材料;
关键词
Porous tungsten; Tape-casting; NaCl; W2C; Compressive strength;

机译：多孔钨;胶带;NaCl;W2C;抗压强度;

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Microstructural evolution and mechanical behavior of porous W reinforced by in-situ W2C

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