서지주요정보
Cu-Al 및 Fe-Al 계 압분체의 transient 액상소결에 관한 연구 = Transient liquid phase sintering of Cu-Al and Fe-Al alloys
서명 / 저자 Cu-Al 및 Fe-Al 계 압분체의 transient 액상소결에 관한 연구 = Transient liquid phase sintering of Cu-Al and Fe-Al alloys / 이도재.
저자명 이도재 ; Lee, Doh-Jae
발행사항 [서울 : 한국과학기술원, 1985].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4102791

소장위치/청구기호

학술문화관(문화관) 보존서고

DMS 8505

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Sintering experiments have been conducted on Cu-4wt%Al and Fe-4wt% Al compacts. Quenching after heating allows the examination of the behavior of transient liquid phase, the intermetallic compound formation and homogenization processes of sintering compacts. The examinations included are electron probe micro-analysis, scanning electron microscopy, differential thermal analysis and dilatometry. In Cu-4wt% Al system, the liquid phase, formed by eutectic reaction, has so high a tendency of forming Cu-Al intermetallic compounds that it is not able to flow due to its short life time. The other liquid phase, formed by the peritectic reaction of θ and $η_1$ phase, flows to form another phase within a few minutes when the green density is low, but the flow is difficult when the green density is high. This flow behavior of liquid phase occurred during heating may be closely related to the chemical potential of liquid and the pore channel size in the compact. The compacts accompanied by this flow of Al rich liquid phase have been homogenized during heating to 975℃. During heating to 1030℃, micro-pore group is formed around Alrich phase because of Kirkendall effect. In Fe-Al system, most of the Al transformed into intermetallic compounds during heating to the eutectic temperature at 15℃/min. A small amount of liquid phase formed at that temperature does not flow and immediately transformed into intermetallic compounds. The formation of intermetallic compounds results in volumetric expansion and lead to stress generation which is responsible for the creation of crack observed in Fe matrix of the compact. The sudden and large expansion around eutectic temperature may be attributed to these phenomena and the amount of swelling depends on the amount of aluminum added.

서지기타정보

서지기타정보
청구기호 {DMS 8505
형태사항 [vii], 83 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Doh-Jae Lee
지도교수의 한글표기 : 윤덕용
지도교수의 영문표기 : Duk-N. Yoon
학위논문 학위논문(박사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 75-78
주제 Copper alloys.
Sintering.
액상 소결. --과학기술용어시소러스
금속간 화합물. --과학기술용어시소러스
상변태. --과학기술용어시소러스
철 합금. --과학기술용어시소러스
Intermetallic compounds.
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