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Phase Distribution and Interface Chemistry by Solid State SiC/Ni Reaction
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  • Phase Distribution and Interface Chemistry by Solid State SiC/Ni Reaction
  • Phase Distribution and Interface Chemistry by Solid State SiC/Ni Reaction
저자명
Lim. Chang-Sung,Shim. Kwang-Bo,Shin. Dong-Woo,Auh. Keun-Ho
간행물명
The Korean journal of ceramics
권/호정보
1996년|2권 1호|pp.19-24 (6 pages)
발행정보
한국세라믹학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The phase distribution and interface chemistry by the solid-state reaction between SiC and nickel were studied at temperatures between $550 ;and; 1250^{circ}C$ for 0.5-100 h. The reaction with the formation of silicides and carbon was first observed above $650^{circ}C$. At $750^{circ}C$, as the reaction proceeded, the initially, formed $Ni_3Si_2$ layer was converted to $Ni_2$Si. The thin nickel film reacted completely with SiC after annealing at $950^{circ}C$ for 2 h. The thermodynamically stable $Ni_2$Si is the only obsrved silicide in the reaction zone up to $1050^{circ}C$. The formation of $Ni_2$Si layers with carbon precipitates alternated periodically with the carbon free layers. At temperatures between $950^{circ}C$ and $1050^{circ}C$, the typical layer sequences in the reaction zone is determined by quantitative microanalysis to be $SiC/Ni_2$$Si+C/Ni_2$$Si/Ni_2$$Si+C/…Ni_2$Si/Ni(Si)/Ni. The mechanism of the periodic band structure formation with the carbon precipitation behaviour was discussed in terms of reaction kinetics and thermodynamic considerations. The reaction kinetics is proposed to estimate the effective reaction constant from the parabolic growth of the reaction zone.