서지주요정보
철에서의 수소의 전달현상에 대한 연구 = A studyon the hydrogen transport phenomena in iron and steel
서명 / 저자 철에서의 수소의 전달현상에 대한 연구 = A studyon the hydrogen transport phenomena in iron and steel / 홍계원.
발행사항 [서울 : 한국과학기술원, 1983].
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소장정보

등록번호

4101939

소장위치/청구기호

학술문화관(문화관) 보존서고

DMS 8305

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리뷰정보

초록정보

The interaction of hydrogen with lattice defects in iron and steel were studied by thermal analysis and permeation experiments using gas chromatograph. The evolution rate peak of dislocation was observed at 220℃ in thermal analysis experiments of cold worked pure iron specimens which heat treated in various conditions when heating rate is 3℃/min. The amount of hydrogen trapped at dislocation obtained from peak height measured in as cold worked specimen was smaller than that in slightly annealed specimen where the dislocation arrangement was loosened by thermal effect rather than tangled in highly cold worked state. These results show that hydrogen is trapped at the stress field of dislocation rather than dislocation core. The recovery of cold worked specimen was proceeded more rapidly when it was heat treated in hydrogen atmosphere than in vacuum, and it is verified that the dislocation mobility is increased by hydrogen. The peak temperature was not varied with the change of dislocation arrangement so it is thought that the trap activation energy of dislocation is constant. Permeabilities and diffusivities of hydrogen in carbon steels were decreased with the increase of carbon content and the trap binding energy of ferrite-carbide interface was calculated from the difference of diffusivities. It is also obtained from the relation between hydrogen charging temperature and the amount of hydrogen trapped measured by thermal analysis. These two values were well agreed and the trap binding energy was averaged as 9.6 KJ/mol. The evolution rate peak of iron oxide inclusion was observed at 422℃ when heating rate was 3℃/min. The trap activation energy and trap binding energy were measured as 47.2 KJ/mol and 15.7 KJ/mol, respectively. The hydrogen energy levels around ferrite-carbide interface and iron oxide inclusion were estimated using trap activation energy and trap binding energy measured.

서지기타정보

서지기타정보
청구기호 {DMS 8305
형태사항 iv, 69 p. : 삽화 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Gye-Won Hong
지도교수의 한글표기 : 이재영
지도교수의 영문표기 : Jai-Young Lee
학위논문 학위논문(박사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 66-69
주제 Hydrogen.
Dislocations.
Thermal diffusivity.
철 합금. --과학기술용어시소러스
수소. --과학기술용어시소러스
확산 계수. --과학기술용어시소러스
전위 (수정). --과학기술용어시소러스
Iron alloys.
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