Fabrication of Chromium (III) Oxide (Cr2O3) Coating by Electrophoretic Deposition. Issue 11 (24th July 2014)

• Record Type: Journal Article
• Authors: Zhang, Daixiong; Li, Xueming; Qin, Bo; Li, Xiaolin; Guo, Xiaogang; Lai, Chuan; Smialek, J.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 11(2014)
• Page Start: 3413
• Page End: 3417
• Publication Date: 2014-07-24
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.13147
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace13147-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Chromium (III) oxide has been widely used as a coating material for corrosion resistance. In this study, electrophoretic deposition (EPD) of nano chromium (III) oxide (Cr₂O₃) particle (60 nm) was investigated to develop coatings with potential applications of anticorrosive material. The stable suspension of Nano‐Cr₂O₃ particles were obtained in the mixture of acetylacetone and ethanol containing 0.00025 M nitric acid. The coating growth rate was studied with using different deposition times in the range of 1–30 min at voltages of 50–150 V with various concentrations of suspension. The electrophoretic Cr₂O₃ coating was sintered at 1000°C and 1200°C for 2 h. The micro‐morphology of coating was qualitatively characterized by focused ion beam scanning electron microscopy (FIB/SEM). The SEM micrographs obviously showed that the electrophoretic Cr₂O₃ coating has formed a uniform and dense ultrathin layer after sintering at 1200°C. We demonstrated that nano‐Cr₂O₃ coating could be easily obtained by EPD for the surface modification of metallic materials for potential interest in hard wear‐resistant and/or low‐friction coatings.</p> </abstract>