• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Fu, Bao-Gang (Fu, Bao-Gang.) | Yang, Jian-Can (Yang, Jian-Can.) | Gao, Zhi-Kun (Gao, Zhi-Kun.) | Nie, Zuo-Ren (Nie, Zuo-Ren.) (学者:聂祚仁)

收录:

EI Scopus SCIE CSCD

摘要:

The W-La2O3-Y2O3-ZrO2 materials were prepared by vacuum hot pressing sintering process. The microstructure was characterized by scanning electron microscopy (SEM). The effects of sintering temperature, sintering pressure, holding time and heating rate on relative density, hardness and microstructure were studied. The sintering activation energy of the powder was calculated. Based on the result, the best sintering parameters by vacuum hot pressing sintering are as follows: sintering temperature of 1600 degrees C, sintering pressure of 60 MPa and holding time of 60 min. The heating rate is 10 degrees C center dot min(-1) from room temperature to 1000 degrees C and 4 degrees C.min(-1) from 1000 to 1600 degrees C. Using this process, the grain size is about 3 mu m in diameter with relative density at 99.7%, and the hardness is HV 528.5. The sintering characteristic index (n) of the specimen is 4, and the sintering mechanism mainly depends on the diffusion from the surface to the intragranular in the volume diffusion. The sintering activation energy of W-La2O3-Y2O3-ZrO2 material is 286.2 kJ.mol(-1), which indicates that the powder has higher activity in sintering process. Graphic abstract

关键词:

Sintering mechanism W-La2O3-Y2O3-ZrO2 Relative density Hot pressing sintering Tungsten electrode

作者机构:

  • [ 1 ] [Fu, Bao-Gang]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Yang, Jian-Can]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Gao, Zhi-Kun]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Nie, Zuo-Ren]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • [Yang, Jian-Can]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

RARE METALS

ISSN: 1001-0521

年份: 2020

期: 7

卷: 40

页码: 1949-1956

8 . 8 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:169

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 8

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 1

在线人数/总访问数:406/4296929
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司