A wear-resistant and corrosion-resistant composite coating designed for application in po-lar ship icebreaking areas was developed with modified basalt powder(BP)and mica powder as filler,while epoxy resin(EP)as the matrix,which was then applied on FH36 Marine low temperature steel plate.Considering the requirements related with the presence of ice-seawater friction-corrosion coupling effect in the ice zone navigation,tests such as coating adhesion,hardness,corrosion resistance by sea-water immersion,as well as simulated low-temperature ice load friction and wear by varying ice-loads at different temperatures.The results show that as the filler content of mica powder and basalt powder in-creased from 10％to 20％(in mass fraction),the adhesion between the low-temperature composite coat-ing and the substrate decreased from level 1 to level 2,whereas,its Vickers hardness increased by ap-proximately 20％,corrosion resistance was improved accordingly,and the friction coefficient exhibited a decreasing trend,resulting in a significant improvement of wear resistance by nearly 50％,demonstrating the wear-reducing effect.Additionally,with the decrease in temperature,the wear performance of the low-temperature coating for polar ships showed a decreasing trend followed by an increasing trend.Mean-while,the wear rate decreased successively from 0.3151 mm3/(N·m)to 0.0962 mm3/(N·m)and then in-creased to 0.1949 mm3/(N·m).The lowest wear rate and the best wear resistance were observed at 0℃,indicating that temperature has a significant impact on the wear performance of the coating.In sum,the higher aggregate content can significantly improve the low-temperature wear resistance of the composite coating,resulting in lower wear volume.
关键词
极地船舶/涂料/环氧树脂/低温摩擦
Key words
polar vessels/paints/epoxy resin/low temperature friction
维普
万方数据