| Title |
Joining of Partially Stabilized Zirconia to Ni - Cr Steel |
| Authors |
유연철(Yeon Chul Yoo); 하문영(Moon Young Ha); 이용철(Yong Chul Rheee); 정형진(Hyung Jin Jung) |
| Abstract |
Studies have been conducted to clarify the joining phenomena of ZrO₂ to Ni-Cr steel produced by solid-state diffusion bonding with Al interlayer. The reaction layer at the steel/Al interface was observed clearly. By the EDX analysis, it was confirmed that this layer was a diffusion layer of Al and Fe. Reaction layer of the Al/ZrO₂ interface could not be detected in spite of good contact suggesting that the Al/ZrO₂ interface was bonded by a surface reaction in which a layer of less than 1㎛ in thickness was formed. It is concluded that the optimum conditions for bonding of ZrO₂ to Ni-Cr steel are of the Al interlayer of 0.6㎜, applied pressure of 100 MPa, temperature of 635℃, and time of 120 minutes. The interface shear strength of 50 MPa is obtained under these conditions. |