摘要
电弧喷涂 Al涂层应用到桥梁栓接面的防滑耐蚀涂层。对电弧喷涂 Al涂层进行了抗滑移系数衰减试验、孔隙率和阳极极化曲线的测定、中性盐雾加速试验。结果表明 ,桥梁栓接面电弧喷涂 Al涂层抗滑移系数初始值为 0 .673,电弧喷涂 Al涂层有良好的耐老化性能 ,在 3% Na CI溶液中 ,Al涂层的自腐蚀电位为- 0 .91 5V,Al涂层的极化曲线比较平缓 ,Al涂层的极化曲线出了一个准钝化区 ,电弧喷涂 Al涂层具有较低的孔隙率、良好的耐腐蚀性能 ,是理想的桥梁栓接面防滑耐腐蚀涂层。
Arc sprayed Al coating was applied as anti corrosion and anti silding coating for bolting surface of railway steel bridge.Attenuation test of anti sliding coefficient,the porosity and the potentiostatic anodic polarization curves,and the salt mist of arc sprayed coatings have been tested.The results show that:the original anti sliding coefficient of arc sprayed Al coating is 0.673 and the arc sprayed Al coating has excellent property of anti attenuation,the spontaneous electrocal potential of Al is -0.915V in 3.0% NaCl solution,the potentiostatic anodic polarization curves of Al go on gently and little inactivation appears on the curve of Al coating,the arc sprayed Al coating has low porosity and excellent property of anti corrosion and it is a ideal coating for anti corrosion and anti sliding of railway steel bridge bolting surface.
出处
《铁道工程学报》
EI
2000年第2期44-46,共3页
Journal of Railway Engineering Society
基金
铁道部科技发展计划项目! ( 97G36-A)
关键词
桥梁栓接面
电弧喷涂
抗滑移系数
耐腐蚀
铁路桥
bolting surface of railway bridge
arc spraying
anti sliding coefficient
anti corrosion
