超音速火焰喷涂WC-10Co4Cr 涂层组织及耐磨耐蚀性研究

Study on the Microstructure and Wear/Corrosion Resistance of WC-10Co4Cr Coating Deposited by High Velocity Oxy-Fuel

江利丰 张广伟

Jiang Lifeng Zhang Guangwei

1.大连华锐重工特种备件制造有限公司,辽宁 大连 116052;  2.沈阳工业大学 材料科学与工程学院,辽宁 沈阳 110178

1.Dalian Huarui Heavy Industrial Special Spear Parts Co.,Ltd.,Dalian Liaoning 116052,China; 2.School of  Materials Science and Engineering,Shenyang University of Technology,Shenyang Liaoning 110178,China

关键词: 超音速火焰喷涂, , WC-10Co4Cr涂层, , 喷涂距离, , 耐磨性, , 耐腐蚀性

WC-10Co4Cr coatings were prepared by high velocity oxy-fuel with different spray distances. The internal structure and wear/corrosion resistance of the coating were studied. The internal structure and phase composition of the coating were analyzed by Metallographic microscope, SEM and XRD. The microscopic structure, microhardness, porosity, density, wear/ corrosion resistance properties were tested. The results showed that the particle stayed in the jet for longer time and in the process of spraying it enlarged the melting degree as the distance increased. As a result, complete flattening of particles was gained which increased the density of coating and the property of wear resistance and corrosion resistance. The coating showed the best property of wear resistance and corrosion resistance at the spray distance of 380 mm.

国家自然科学基金项目(51301112);沈阳市科学技术基金项目(F14-231-1-26).

10.3969/j.issn.1672-6952.2017.02.012