Paper Title:
Joining of SiC Ceramic by High Temperature Brazing Using Ni-Cr-SiC Powders as Filler
  Abstract

Joining of ceramics is of importance from both technical and economical points of view. Brazing is a widely used process to join ceramics. In order to increase the working temperature and weld strength of joints, a high temperature brazing process using Ni-Cr-SiC powders (consisting of Ni, Cr and SiC powders) as filler to join recrystallized SiC ceramic has been investigated. The obtained optimized technological parameters are joining temperature of 1360°C, holding time of 5min and filler mass of 280mg. Under these conditions the maximum relative bending strength of joints, 70.5%, is achieved. Microstructure and phase analysis reveals that interdiffusions and chemical reactions take place in the weld zone. A reaction layer, of which the major phase is Ni2Si, exists between the welding base material SiC ceramic and the filler reaction product layer, called as interlayer, of which the major phase is Cr23C6.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2394-2397
DOI
10.4028/www.scientific.net/KEM.336-338.2394
Citation
S. J. Li, Y. W. Mao, Y. H. He, "Joining of SiC Ceramic by High Temperature Brazing Using Ni-Cr-SiC Powders as Filler", Key Engineering Materials, Vols. 336-338, pp. 2394-2397, 2007
Online since
April 2007
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$32.00
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