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.
|Number of pages||8|
|Journal||Journal of the European Ceramic Society|
|State||Published - Jul 1 2017|
Bibliographical noteFunding Information:
This work is supported by the National Natural Science Foundation of China (NSFC, grant number 51305102 and 51475103) and the Funds for Distinguished Young Scientists of Heilongjiang Province (grant number JC2015011). One of the authors (DPS) acknowledges a support through the Distinguished 1000 Foreign Expert Professor Plan. The lead author (RP) expresses an appreciation of the support from Chinese Scholarship Council, University of Kentucky (UK), and Massachusetts Institute of Technology (MIT) for an opportunity to complete these studies at UK and MIT. The authors acknowledge the constructive suggestions of an anonymous reviewer.
© 2017 Elsevier Ltd
- Diffusion bonding
- Mechanical properties
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry