| 플라즈마 전해 산화 코팅에 있어서 인산염 전해액과 모재 성분 변화가 Al 산화피막 물성에 미치는 영향 I. PEO층의 물성 |
| 김배연, 김정곤, 이득용1, 전민석2, 김용남2, 김성엽3, 김광엽3 |
인천대학교 신소재공학과
1대림대학교 재료정보학과
2한국산업기술시험원 |
| Effect of Na2P2O7 Electrolyte and Al Alloy Composition on Physical and Crystallographical Properties of PEO Coating Layer : I. Physical Properties of PEO Layer |
| Bae-Yeon Kim, Jeong-Gon Kim, Deuk-Yong Lee1, Min-Seok Jeon2, Yong-Nam Kim2, 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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Physical properties of plasma electrolytic oxidized layers of 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 plasma electrolytic oxidation was mixture of distilled water, $Na_2P_2O_7$, KOH and some metal salts. Growth rate of oxide layer was slower in $Na_2P_2O_7$ electrolyte system than in $Na_2SiO_3$ system, and Ra50 surface roughness of oxidized layer was below $1.2{mu}m$. Surface hardness in $Na_2P_2O_7$ electrolyte system is higher than in $Na_2SiO_3$ system, and roughness was lower in $Na_2P_2O_7$ electrolyte system than in $Na_2SiO_3$ system. |
| Key words:
PEO, Coating, Phosphate, Physical properties |
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