Citation

Jang SS, Kim MG, Park SJ, Lim ST, Oh YJ. Journal of Korean Institute of Metals and Materials 2015; 53(6): 420-425.

Copyright

(Copyright © 2015)

DOI

10.3365/KJMM.2015.53.6.420

PMID

unavailable

Abstract

Interfacial reaction of metal-ceramic joints is of great interest because of their potential applicability to components operating in high-temperature environments. In this work, Mo-41Re alloy with sputter-deposited SiC coating was annealed at 1300∼1500°C, and the reaction at the alloy/SiC interface was investigated. On annealing at 1500°C, the element Mo in the Mo-41Re alloy significantly diffused toward the SiC layer, reacted with SiC, and formed a MoC layer. The reaction resulted in the depletion of Mo in the alloy adjacent to the surface. A brittle o-MoRe phase that was detrimental to joint reliability, formed at a depth of 10∼20 μm from the alloy surface. After annealing at lower temperature (1300°C), the o-MoRe phase was formed less deep (3∼5 μm), but with higher density, in the alloy. The reaction at both temperatures additionally resulted in Mo suicides and voids at the interface. Copyright © The Korean Institute of Metals and Materials.

Language: ko

Keywords

Annealing; Silicon; Silicon carbide; Interfaces (materials); Transmission electron microscopy; Silicon alloys; Interfaces; High resolution transmission electron microscopy; Molybdenum alloys; Binary alloys; Ceramics; Alloy surfaces; Ceramic joints; Diffusion bonding; High-temperature annealing; High-temperature environment; Joint reliability; Lower temperatures; Re alloy; Rhenium alloys; SiC coatings; Transmission electron microscopy (TEM)