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论文类型：期刊论文

发表时间：2014-03-01

发表刊物：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录刊物：SCIE、Scopus

卷号：9

期号：3

页面范围：1250-1263

ISSN号：1452-3981

关键字：Aluminum substrate; trivalent chromium electroplating; zincates interlayer; mathematical modeling; RSM

摘要：The trivalent chromium coatings were deposited on the pure aluminum substrate using a thin zincates interlayer. Zincates has considerably influenced in the formation of trivalent chromium deposit on the pure aluminum substrate. The plating temperatures, plating times and different pH ranges had significant effects on the thickness, uniformity and microstructure of trivalent chromium plating on the pure aluminum substrate. Results show the average thickness for homogenous chromium coating without pitting and microcracks was 35 mu m at 30 degrees C, pH = 2 and 40 min. The Vickers microhardness of the chromium coating was about HV 8.3 GPa under a load of 1 N. Experimental results were mathematically modeled with the response surface methodology (RSM) method by statistical software SPSS 19 and Design expert V6 to predicted coating thickness at different coating conditions.