| 플라즈마 전해 산화 코팅에 있어서 알루미늄 합금 모재 성분의 물리적, 결정학적 영향 II. PEO 층의 결정상 분석 |
| 김배연, 이득용1, 신민철2, 신현규2, 김병곤2, 김성엽3, 김광엽3 |
인천대학교 신소재공학과
1대림대학교 재료정보학과
2한국산업기술시험원 재료평가센터 |
| Effect of Al Alloy Composition on Physical and Crystallographical Properties of Plasma Electrolytic Oxidized Coatings II. Crystallographic Analysis of PEO Layer |
| Bae-Yeon Kim, Deuk-Yong Lee1, Min-Chul Shin2, Hyun-Gyoo Shin2, Byeong-Kon Kim2, Sung-Youp Kim3, Kwang-Youp Kim3 |
Department of Materials Science and Engineering, University of Incheon
1Department of Materials Engineering, Daelim University College
2Material Testing Center, Korea Testing Laboratory
3MST Technology |
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| ABSTRACT |
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Physical properties of Plasma electrolytic oxidized 8 different kinds of Al alloys, A-1100, A-2024, A-5052, A-6061, A-6063, A-7075, ACD-7B and ACD-12 were investigated. The electrolyte for PEO was $Na_2SiO_3$ and NaOH and some alkali earthen metal salts system solution. $eta$-alumina, as well as $gamma$-alumina, was main crystal phase, which were ever reported. Also, $Al_{4.95}Si_{1.05}O_{9.52}$ was found only in this research. So we can conclude that the process conditions of PEO apparatus and composition and concentration of its electrolyte affects crystal structure and physical properties of PEO layers much more than the compositions of Al alloy. |
| Key words:
PEO, Coating, Crystal structure, Physical properties |
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