Tungsten Carbide: A Versatile Additive to Get Trace Alkaline-earth Oxide Impurities out of ZrB2 based Ceramics

Research output: Contribution to journalArticle

Authors

  • Ji Zou
  • Andrea D'Angio'
  • Haibin Ma
  • Guojun Zhang

Colleges, School and Institutes

Abstract

In this work, trace amounts of alkaline-earth oxide impurities (MxOy), M=Mg, Ca and Al, are identified from different graded ZrB2 based ceramics. The reactions in MxOy-WC systems at high temperature are therefore investigated via X-Ray diffraction and element analysis, which have been further supported by thermodynamic calculations. Since MxOy with low melting point deteriorates the high temperature performance of ceramics, the effective role of WC on strongZrB2-SiC-WC ceramics is re-considered: apart from the contribution on removing of
ZrO2, WC serves as a versatile additive with capacity to remove different oxide

Details

Original languageEnglish
Pages (from-to)40-44
Number of pages5
JournalScripta Materialia
Volume147
Early online date5 Jan 2018
Publication statusPublished - 1 Apr 2018