Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Na2P2O7 Electrolyte and Al Alloy Composition on Physical and Crystallographical Properties of PEO Coating Layer : I. Physical Properties of PEO Layer

플라즈마 전해 산화 코팅에 있어서 인산염 전해액과 모재 성분 변화가 Al 산화피막 물성에 미치는 영향 I. PEO층의 물성

  • Received : 2012.04.23
  • Accepted : 2012.04.27
  • Published : 2012.05.31
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Abstract

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.

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References

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