Preparation and thermal shock characterization of yttrium doped tungsten-potassium alloy

被引：27

作者：

He, Bo ^{[1
]}

Huang, Bo ^{[1
]}

Xiao, Ye ^{[1
]}

Lian, Youyun ^{[2
]}

Liu, Xiang ^{[2
]}

Tang, Jun ^{[1
]}

机构：

[1] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Peoples R China

[2] Southwest Inst Phys, Chengdu 610064, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 686卷

基金：

中国国家自然科学基金;

关键词：

Potassium-doped tungsten; Yttrium; SPS sintering; Thermal shock; PLASMA-FACING MATERIALS; MICROSTRUCTURE; PERFORMANCE; COMPONENTS; ENERGY; LA2O3; WIRES;

D O I：

10.1016/j.jallcom.2016.05.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Novel tungsten-based W-K-Y alloys were sintered by spark plasma sintering (SPS) method using fine-grained yttrium doped tungsten-potassium (W-K) powder. The relative density, microstructure, hardness and the resistance to thermal shock damage of the sintered samples were characterized. With the enhanced Y doping, the grain size decreased and the hardness increased. Thermal shock test under 0.37 GW/m(2) heat load showed that low yttrium doping (0.05 wt%, 0.1 wt% and 0.5 wt%) in W-K-Y alloys can improve the resistance to thermal shock damage comparing with traditional commercial W-K, while high yttrium doping (1 wt%) easily leads to crack formation. This study will provide helpful information to optimize the preparation of tungsten-based plasma facing materials through composite tuning. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：298 / 305

页数：8

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