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http://dx.doi.org/10.12656/jksht.2011.24.4.209

Formation of Coatings on SKD11 Core Mold Steel by Plasma Electrolytic Oxidation  

Kim, S.M. (Div. of Advanced Materials Engineering, Kongju National University)
Lee, T.H. (Div. of Advanced Materials Engineering, Kongju National University)
Kang, S.J. (Research Institute of Poscotmc)
Cho, Y.H. (Div. of Advanced Materials Engineering, Kongju National University)
Koo, J.M. (Div. of Advanced Materials Engineering, Kongju National University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.24, no.4, 2011 , pp. 209-216 More about this Journal
Abstract
Surface coatings were prepared on SKD11 core mold steel by plasma electrolytic oxidation (PEO). The coatings were investigated about the formation condition of core mold steel. SKD11 were coated by PEO in a mix solution of Sodium Aluminate $NaAlO_2$ (10 g/l), Sodium Silicate powder $Na_2SiO_3$ (0.5 g/l), Sodium tungstate dihydrate $Na_2WO_42H_2O$ (0.5 g/l) at less than $30^{\circ}C$. The electrical condition were voltage : 500~600 V; Pulse : 600~1800 Hz; current density 15~20 $A/dm^2$ various time : 3 min~40 min. The coatings surface morphology, cross-section, friction coefficient, hardness were investigated. The PEO coatings on SKD11 core mold steel showed the extended service life.
Keywords
hard coating; plasma electrolytic oxidation; PEO; core mold; abrasion;
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Times Cited By KSCI : 3  (Citation Analysis)
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