Ni-Al防滑涂层性能

为研究喷涂材料和喷涂工艺对金属基防滑涂层性能的影响,采用双丝电弧喷涂在45钢上分别制备了镍铝合金丝材NiAl-95/05和镍铝药芯丝材NiAl-80/20防滑涂层,对涂层的微观组织结构、物相、结合强度进行了测量和对比分析;采用倾角法测定了涂层的干态和湿态的静摩擦系数;对两种涂层进行了NaCl溶液浸泡腐蚀试验.结果表明,两种涂层均与基体结合紧密无裂纹,NiAl-95/05的平均结合强度为68.05 MPa,NiAl-80/20的平均结合强度为69.02 MPa;两种涂层都具有很好的耐蚀性;NiAl-95/05涂层喷涂态的干态和湿态静摩擦系数均小于NiAl-80/20涂层.

Properties of Ni-Al anti-skid coatings

Two types of Ni-Al alloy coatings were prepared on 45 steel by duel wire spraying process in which NiAl-95/05 alloy wire and NiAl-80/20lux-cored wire were employed separately in order to investigate the effects of spraying materials and techniques on the performance of anti-skid coatings. The microstructure, phase structure and bonding strength of the resultant coatings were were measured. The static friction coefficient of the coatings was measured with inclination method. The environmental resistance of both coatings was studied with NaCl solution bathing. The results show that both coatings were well combined with the base materials and no cracks were observed. The average bonding strength was 68 MPa for NiAl-95/05 coating and 69 MPa for NiAl-80/20 coating. Both coatings performed excellently in corrosion environments. The static friction coefficient of NiAl-95/05 coating was smaller than that of NiAl-80/20 coating.