Cross-diffusion phenomena within a ZrCx – Zr – ZrCx joint

Rui Pan, Peng He, Tiesong Lin, Dusan P. Sekulic, Zhao Huang, Hongmei Wei, Zhihua Yang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

This study uncovers process conditions for the homogenization of the interface zone formed by a diffusion bonding of ZrCx (x = 1, 0.85 and 0.7) assisted by a Zirconium interlayer. The transitional metal interlayer is positioned between the ceramics mating surfaces . The ability of Zr to form a homogenous joint with ZrCx was verified for all the considered cases of ZrCx. The homogenous joint domain forms under conditions of a particular range of values of (i) the concentration of carbon vacancies in the base ZrCx ceramics, (ii) the bonding temperature, and (iii) the holding time, for a given thickness of the interlayer. The formation of a homogenous domain improves remarkably the mechanical properties of ZrCx joints. It is established that the four-point bending strength and the nano-indentation hardness of the homogenous ZrCx/Zr/ZrCx joints can be as high as that of the base ceramics.

Original languageEnglish
Pages (from-to)2779-2786
Number of pages8
JournalJournal of the European Ceramic Society
Volume37
Issue number8
DOIs
StatePublished - Jul 1 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

  • Carbides
  • Diffusion bonding
  • Homogenization
  • Mechanical properties
  • Microstructure

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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