摘要
低碳20钢经渗铝处理后，钢基体晶粒细化，强度和韧性略有提高，符合GB699－65要求。渗铝后在金属表面形成0．1～0．3mm厚、由Al2O3·FeO、FeAl3、Fe2Al5等多种金属间化合物组成的渗铝层，其结构致密且完全覆盖金属表面，具有良好的抗氧化性能，使用温度可提高到800℃；渗铝层还具有耐H2S、SO2、CO2、NH3和海水腐蚀的性能和优良的耐磨性能。在石油化工装备的应用实践表明，渗铝钢是一种物美价廉的材料，能取得较大的经济效益。
A low-carbon steel is aluminized and its strength and hardness can be improved to a certain degree.An aluminized layer 0.1～0.3mm thick of Al2O3· FeO, FeAl3 and Fe2Al5 is fond on the steel surface, which has good oxidation resistance, corrosion resistance and abrasion resistance. With the aluminized layer,the steel can be used at800℃. Application on petrochemical equipment shows that the aluminized steel is a nice material with low Price that canbring high financial profits.
出处
《石油机械》
北大核心
1999年第5期52-54,共3页
China Petroleum Machinery
