서지주요정보
90Cu-10Sn 합금의 소결시 기공형성 = Pore formation during sintering of 90Cu-10Sn alloy
서명 / 저자 90Cu-10Sn 합금의 소결시 기공형성 = Pore formation during sintering of 90Cu-10Sn alloy / 장진성.
저자명 장진성 ; Jang, Jin-Sung
발행사항 [서울 : 한국과학기술원, 1982].
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소장정보

등록번호

4101911

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8238

SMS전송

도서상태

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반납예정일

초록정보

In 90Cu-10Sn alloy pore formation during sintering and effect of Sn powder size on porosity and pore size distribution have been studied. To investigate the pore formation process, the compacts of -22+36 μm irregular Cu powder and about 130 μm dia. Spherical Sn powder mixture were sintered at various temperatures. When the sintering temperature was above the melting temperature of Sn (232℃), the liquid Sn began to flow into the capillaries between Cu powders. As the sintering temperature reached 400℃, the liquid Sn had flowed into the capillaries completely, and the original Sn powder sites remained large pores. Untill 500℃ Sn atoms diffused little into Cu particles, but Cu atoms dissolved and diffused into liquid Sn. At 700℃, recrystallization to α-bronze had begun and the specimen composition became almost uniform. At 800℃ large α-grains with many twin boundaries and grown and sphroidized pores resulted. To investigate the effect of Sn powder size on porosity and pore size distribution, four kinds of mixtures of -22+36 μm irregular Cu powder and about (a) 30 μm, (b) 60 μm, (c) 100 μm, (d) 130 μm dia. Spherical Sn powders were prepared. And the four green compacts were sintered simultaneously at 830℃ for 15 min. As Sn powder size increased from 30 μm to 60 μm, the porosity increased about from 30 vol.% to 50 vol.%. But the porosity remained constant at about 50 vol.% despite of further increase of Sn powder size. An Sn powder size increased, pore growth and spheroidizing phenomena were pronounced and consequently the number of fine pores decreased steeply and that of large pores increased.

서지기타정보

서지기타정보
청구기호 {MMS 8238
형태사항 [iii], 31 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jin-Sung Jang
지도교수의 한글표기 : 윤덕용
지도교수의 영문표기 : Duk-N. Yoon
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 30-31
주제 Sintering.
Porosity.
Recrystallization (Metallurgy)
금속 소결. --과학기술용어시소러스
기공 (주조) --과학기술용어시소러스
재결정. --과학기술용어시소러스
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