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J. Korean Ceram. Soc. > Volume 49(3); 2012 > Article
Journal of the Korean Ceramic Society 2012;49(3): 241.
doi: https://doi.org/10.4191/kcers.2012.49.3.241
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
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
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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