| 플라즈마 전해 산화 코팅에 있어서 인산염 전해액과 모재 성분 변화가 Al 산화피막 물성에 미치는 영향 II. PEO 층의 결정상 분석 |
| 김배연, 김정곤, 이득용1, 김용남2, 전민석2, 김성엽3, 김광엽3 |
인천대학교 신소재공학과
1대림대학교 재료정보학과
2한국산업기술시험원 |
| Effect of Na2P2O7 Electrolyte and Al Alloy Composition on Physical and Crystallographical Properties of PEO Coating Layer : II. Crystallographic Analysis of PEO Layer |
| Bae-Yeon Kim, Jeong-Gon Kim, Deuk-Yong Lee1, Yong-Nam Kim2, Min-Seok Jeon2, Sung-Youp Kim3, Kwang-Youp Kim3 |
Department of Advanced Materials 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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Crystal structure and chemical compositions of Plasma electrolytic oxidized layer of A-1100, A-2024, A-5052, A-6061, A-6063, A-7075, ACD-7B and ACD-12 were investigated. The electrolyte for plasma electrolytic oxidation was mixture of distilled water, $Na_2P_2O_7$, Cu, Cr metal salts and KOH. ${eta}$-Alumina, as well as ${alpha}$-alumina, was main crystal phase. Another crystals such as $(Al_{0.948}Cr_{0.052})_2O_3$ and $(Al_{0.9}Cr_{0.1})_2O_3$ were also formed in the oxide layer. It was thought that the effect of electrolyte compositions on the physical properties and crystal system of PEO layers was greater than the effect of Al alloy composition variation. |
| Key words:
PEO, Coating, Crystal structure, Phosphate |
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