Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7886953 | Ceramics International | 2018 | 5 Pages |
Abstract
Brazing SiO2-BN ceramic to Ti6Al4V is often associated with the problem of brittle continuous phases and high residual stress at the reaction layer of SiO2-BN, inducing low joining strength. To overcome these problems, SiO2-BN ceramic modified with in situ synthesized carbon nanotubes (CNTs) were joined to Ti6Al4V by TiZrNiCu alloy. Results show that CNTs can improve the wettability of TiZrNiCu on SiO2-BN rapidly, and break the continuous reaction layer of SiO2-BN into fine sizes. Residual stress can also be reduced by low CTE of CNTs and fine size phases among reaction layer. The shear strength of SiO2-BN/Ti6Al4V joints with CNTs modified is 35.3â¯MPa at 970â¯Â°C for 10â¯min, which is 3 times higher than that of the joints without CNTs modified.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Ba, X.H. Zheng, R. Ning, J.H. Lin, J.L. Qi, J. Cao, W. Cai, J.C. Feng,