A portable corrosion rate meter was used to comparatively measure the annual corrosion rates of 20 steel tube and its integral hot-dip aluminizing coating in acidic and alkali corrosive mediums.

采用便携式瞬时腐蚀速度测量仪，对20钢及其热浸镀铝件分别在酸性和碱性介质中测定年腐蚀速率并进行比较。

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The research status about of the microstructure, formation mechanism and growth kinetics of hot dip aluminizing coating is reviewed. Research directions for hot-dip aluminized steel are suggested.

综述了热浸镀铝钢镀铝层的组织、形成机理、生长动力学和扩散后组织的研究现状，指出了热浸镀铝钢今后的研究方向。

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The RE-aluminizing technique and coating structure of gas turbine blade made of alloy M38G are studied.

研究了涡轮叶片材料M38G合金渗稀土-铝涂层的工艺过程和组织结构。

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