摘要
由磁控管的联合劈啪作响免职并且退火真空， analuminum 散开涂层在 AZ91D 合金的底层上被准备改进它的 corrosionresistance.The 微观结构，散开涂层的作文被 scanningelectron 显微镜学调查，X光检查 diffraction.The 散开涂层主要由beaphase-Al_( 12 )组成Mg_( 17 ) .The 3.5 wt %的连续沉浸测试中立 NaCl 答案 indicatedthat 有散开涂层的标本最好
By combination of magnetron sputtering deposition and vacuum annealing, an aluminum diffusion coating was prepared on the substrate of AZ91D alloy to improve its corrosion resistance. The microstructure and composition of the diffusion coating was investigated by scanning electron microscopy and X-ray diffraction. The diffusion coating was mainly comprised of β phase-Al12Mg17. The continuous immersion test in 3.5 wt pct neutral NaCl solution indicated that the specimen with diffusion coating had better corrosion resistance compared with the bare AZ91D alloy specimen. The potentiodynamic polarization measurement indicated that the diffusion coating could function as an effectively protective layer to reduce the corrosion rate of AZ91D alloy when exposed to 3.5 wt pct NaCl solution.
