서지주요정보
활성금속합금에 의한 Alumina 계면에서의 반응 현상에 관한 연구 = A study on the interfacial reaction phenomena in active brazed joints of $Al_2O_3$
서명 / 저자 활성금속합금에 의한 Alumina 계면에서의 반응 현상에 관한 연구 = A study on the interfacial reaction phenomena in active brazed joints of $Al_2O_3$ / 변우봉.
저자명 변우봉 ; Byun, Woo-Bong
발행사항 [대전 : 한국과학기술원, 1995].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8005916

소장위치/청구기호

학술문화관(문화관) 보존서고

DMS 95013

휴대폰 전송

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리뷰정보

초록정보

The variations of the crystal structure and the microstructure of reaction products formed at the interface between the Ti-contained filler metal and $Al_2O_3$ with heat-treatment in a temperature range of 850 to 1100℃ for 1 to 10 min. were studied by means of glancing angle x-ray diffraction, Auger electron spectroscopy(AES), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and transmission electron microscopy(TEM). Ⅰ. In the $Al_2O_3$/$(Ag-Cu)_{eu}t$.-xTi(wt/o)(x=1.0 and 1.5) system, the variation of reaction layers mainly depended on heat-treatment temperature and Ti-concentration not time. When the joint was heat-treated at lower 950℃, two types of titanium oxides - δ-TiO and α-TiO in 1.5wt%Ti, and $Ti_2O$ in 1.0wt%Ti, was observed. As the δ-TiO and the $Ti_2O$ were not detected at higher 1000℃, it seemed to be transient phases. When the joint was heat-treated at higher 950℃, two types of reaction layers formed in the interface between the filler metal and the $Al_2O_3$. One was TiO and formed as small particles right beyond the $Al_2O_3$ surface. Another is one formed on the TiO layers, and was attributed to $Ti_3Cu_3O$ by x-ray, EDX and TEM analysis. The crystal structure and the lattice parameter of the second reaction layer ($Ti_3Cu_3O$) were diamond cubic and 1.128nm, respectively. The higher the heat-treatment temperature was, the faster the $Ti_3Cu_3O$ grew. Ⅱ. In the $Al_2O_3$/Ag-yCu-2Ti(wt/o)(y=49 and 59) system, the behavior of the first reaction layer(TiO) with heat-treatment temperature represented the same as $Al_2O_3$/$(Ag-Cu)_{eu}t$.-1.5Ti system, but growth of the second reaction layer($Ti_3Cu_3O$) was accelerated at lower temperature(950℃) in relatively higher Cu-concentration (59wt%Cu). Ⅲ. The source of oxygen for formation of reaction products was the $Al_2O_3$ by the results of XPS(x-ray photoelectron spectroscopy) analysis.

서지기타정보

서지기타정보
청구기호 {DMS 95013
형태사항 iv, 84 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Woo-Bong Byun
지도교수의 한글표기 : 김호기
지도교수의 영문표기 : Ho-Gi Kim
학위논문 학위논문(박사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 81-84
주제 계면 반응
활성금속법
반응 생성물
Interfacial Reaction
Active Brazing Method
Reaction Products
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