渗铝钢的抗氢损伤性能  

HYDROGEN DAMAGE RESISTANCE OF ALUMINIZED STEEL

作　　者：李华飞[1] 徐金文[1] 刘根凡[1] 

机构地区：[1]华中科技大学化工过程装备与控制研究所,武汉430074

出　　处：《中国腐蚀与防护学报》2005年第4期237-240,共4页Journal of Chinese Society For Corrosion and Protection

摘　　要：采用钝化助镀法在30CrMo钢表面获得热浸铝层,通过扩散渗铝和调质处理获得了渗铝钢试片和试棒.用氢渗透电化学技术测量了渗铝钢在饱和H2S盐水中的渗氢曲线,得到了不同温度(T)下氢在渗铝钢中的扩散系数(D),拟合得到了T与D的关系式,并研究了溶液中NaCl和CO2对稳态氢渗透电流(Imax)的影响.比较了30CrMo渗铝钢在饱和H2S盐水中腐蚀前后的机械性能.结果表明:热浸渗铝钢对氢扩散有明显的阻滞作用,其抗氢损伤性能好于基体钢材.Hot-dipped aluminum coating was made on the surface of 30CrMo sheet steel by passivation method. Testing samples were prepared after diffusing, quenching and high temperature tempering. The hydrogen diffusion curve of aluminized steel in hydrogen sulfide saturated salt water was measured with hydrogen penetration electrochemical technology, and the diffusion coefficient （D） of hydrogen in the aluminized steel and the temperature （T） dependence on D were obtained. The effects of NaCl and CO2 in the solution on steady hydrogen penetration current were also studied. Mechanical properties of the aluminized steel and its matrix steel were tested, before and after corrosion in hydrogen sulfide saturated salt water. The results showed that the aluminized steel obviously inhibited hydrogen diffusion and had better hydrogen damage resistance than the matrix steel.

关 键 词：热浸渗铝钢 氢扩散 抗氢损伤性能 

分 类 号：TG174.443[金属学及工艺—金属表面处理]