Microstructure and Properties of Electrodeposited Coatings on Titanium Surface
Journal Title: 河南科技大学学报（自然科学版） - Year 2017, Vol 38, Issue 5
Abstract
WC coating and CoCr/WC coating were prepared on the surface of TA2 basis material by electro spark deposition. The morphology, surface roughness, thickness, phase composition, microhardness and relative wear resistance of the two coatings were compared. The results show that the CoCr/WC coating has fewer defects and better interfacial bonding than WC coating. The surface roughness of WC coating and CoCr/WC coating is about 7. 887 μm and 7. 445 μm, respectively. The thickness of WC coating and CoCr/WC coating is about 20 μm and 40 μm respectively. The surface of WC coating is mainly composed of W2C, TiC and W. The CoCr/WC coating is mainly composed of W2C, Co3W3C and W. The highest microhardness of WC coating surface is 970 HV, and the highest microhardness of CoCr/WC coating is 1 040 HV. The relative wear resistance of WC coating and CoCr/WC coating is respectively 2. 5 and 3. 2. WC coating and CoCr/WC coating make the surface properties of the substrate change, and the comprehensive performance of CoCr/WC coating is better than that of WC coating.
Authors and Affiliations
Gongyi WU, Hua YU, Zhanling ZHANG, Ranfeng QIU, Keke ZHANG
Keywords
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