Microstructure of chemical vapor transport deposition single crystal tungsten coating working at 1600℃

Hongtao T. Huang, Yongfeng F. Wei, Jianpin P. Zheng, Chengwen W. Tan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Thermionic energy conversion is a process by which thermal energy is transformed into electrical energy directly without the intermediate steps. Microstructure of Chemical Vapor Transport Deposited (CVTD) single crystal tungsten coating working at 1600℃ for 1000 h was investigated using optical microscopy and electron backscatter diffraction (EBSD) technique. The experimental results showed that the etching morphology of single crystal tungsten coating was not clear compared to the etching morphology before working. The electro-etched surface of single crystal tungsten coating mainly consist of {110} crystal planes and {112} crystal planes before working at 1600℃. The surface of the single crystal tungsten coating mainly consists of near {110} crystal planes and near {112} crystal planes instead after working at 1600℃.

Original languageEnglish
Title of host publicationSpecial and High Performance Structural Materials
EditorsYafang Han, Ying Wu, Guangxian Li, Fusheng Pan, Runhua Fan, Xuefeng Liu
PublisherTrans Tech Publications Ltd.
Pages597-602
Number of pages6
ISBN (Print)9783038357612
DOIs
Publication statusPublished - 2016
EventChinese Materials Conference on Special and High Performance Structural Materials, CMC 2015 - Guiyang, China
Duration: 10 Jul 201514 Jul 2015

Publication series

NameMaterials Science Forum
Volume849
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Conference on Special and High Performance Structural Materials, CMC 2015
Country/TerritoryChina
CityGuiyang
Period10/07/1514/07/15

Keywords

  • CVTD
  • Etching morphology
  • Single crystal tungsten coating
  • Thermionic energy converter

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