Effect of process conditions on crystal structure of Al PEO coating. II. Bipolar and electrolyte (알루미늄 PEO 코팅의 결정상에 미치는 공정 조건에 대한 연구 II. Bipolar 펄스와 전해액)

Bae-Yeon Kim (김배연); 함재호; DeukYong Lee (이득용); Yongnam Kim (김용남); 전민석; Kim, KI-Youn (김기윤); Ji-Won Choi (최지원); Sung Youp Kim (김성엽); Kwang Youp Kim (김광엽)

doi:10.6111/JKCGCT.2014.24.2.065

Effect of process conditions on crystal structure of Al PEO coating. II. Bipolar and electrolyte

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2014, 24(2), pp.65-69
DOI : 10.6111/JKCGCT.2014.24.2.065
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Bae-Yeon Kim ¹, 함재호 ¹, DeukYong Lee ², Yongnam Kim ³, 전민석 ³, Kim, KI-Youn ¹, Ji-Won Choi ⁴, Sung Youp Kim ⁵, Kwang Youp Kim ⁵

¹인천대학교
²대림대학교
³한국산업기술시험원
⁴한국과학기술연구원
⁵MST Technology

Accredited

ABSTRACT

Crystallographic phases of Plasma electrolytic oxidized Al alloy, A1100, A5052, A6061, A6063, A7075, wereinvestigated. Two types of electrolyte Na2Si2O3 and Na2P2O7 were also compared. Bipolar pulse, 2000 μsec with 400 μsec +420 V impulse and 300 μsec − impulse were applied for 20 min. α-Alumina, γ-alumina, η-alumina, Al4.95Si1.05O9.52, and(Al0.9Cr0.1)2O3 were mainly observed. Si, component of electrolyte, were moved into the PEO layer by bipolar pulse. Glassyphase was also observed at the surface of Na2Si2O3 electrolyte treated PEO layer, and increased with the Mg content of Alalloy. It is concluded that at first glassy phase was formed by the micro plasma, and the high temperature of plasma turnsglassy phase to several crystalline phases. And we could expect that many other crystalline phase could be formed by PEOprocess.

KEYWORDS

PEO, Al, Coating, Crystal structure, Bipolar pulse

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[journal] 김경인 / 2014 / Synthesis of high purity aluminum nitride nanopowder by RF induction thermal plasma / 한국결정성장학회지 / 한국결정성장학회 24(1) : 1~7

[journal] 박영수 / 2012 / Synthesis of boehmite powder from aluminum etching solution / 한국결정성장학회지 / 한국결정성장학회 22(6) : 286~290

[journal] 김배연 / 2014 / Effect of process conditions on crystal structure of Al PEO coating. I. Unipolar pulse and coating time / 한국결정성장학회지 / 한국결정성장학회 24(2) : 59~64

[other] / 2002 / KS D6701 : Aluminum and aluminum alloy sheetsand plates, strips and coiled sheets

[other] / 2003 / KS D2331:2003 Aluminium alloy ingots for die casting

[journal] T. Ban / 1992 / Structure refinement of mulliteby the Rietveld method and a new method for estimationof chemical composition / J. Am. Ceram. Soc 75 : 227~

[journal] I. Levin / 1998 / Metastable alumina polymorph: crystal structures and transition sequences / J. Am. Ceram. Soc 81 : 1995~

[thesis] C. Ruberto / 2001 / Metastable alumina from theory : Bulk,surface, and growth of κ-Al2O3 / 박사 / Dept.App. Phy

[journal] I. Levin / 1997 / Cubic to Monoclinic phase transformations in alumina / Acta. Mater 45 : 3659~

[journal] R.O. Hussein / 2010 / Influenceof process parameters on electrolytic plasma dischargingbehavior and aluminum oxide coating microstructure / Surf. Coat. Technol 205 : 1659~

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effect of process conditions on crystal structure of Al PEO coating. II. Bipolar and electrolyte

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Citation status

* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effect of process conditions on crystal structure of Al PEO coating. II. Bipolar and electrolyte

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