摘要
:钢材经热浸镀铝后 ,具有了良好的抗高温氧化腐蚀性能。为进一步提高 1Cr18Ni9Ti、1Cr13不锈钢的高温使用性能 ,本文对两种材料进行了热浸镀稀土铝合金处理和抗高温氧化性能的试验。高温氧化试验结果表明 ,1Cr18Ni9Ti、1Cr13不锈钢经热浸镀铝处理后抗高温氧化腐蚀性能明显提高 ,这主要取决于合金层中Al-Fe金属间化合物在高温氧化中的变化。 90 0℃氧化 5 0 0h ,1Cr18Ni9Ti钢浸镀件形成致密的α -Al2 O3氧化膜和 β -NiAl相层 ;1Cr13钢浸镀件形成Al2 O3氧化膜及Cr2 O3氧化物。研究表明 ,不锈钢中Cr、Ni元素对提高抗高温氧化性具有重要的影响作用。
Oxidation resistance of hot dipping aluminized steel is very good. In order to improve the property of 1Cr18N9Ti and 1Cr13 stainless steel used at high temperature, tests of hot dip aluminizing and oxidation resistance were done on them.The results of high temperature oxidation tests show that the HDA coating obviously improves the oxidation resistance of 1Cr18Ni9Ti steel and 1Cr13 steel. The improvement mainly depends on the change of alloy layer during oxidation. Oxidized at 900℃ for 500h, the HDA 1Cr18N9Ti steel has formed a compact α-Al 2O 3 oxide film and a single β-NiAl phase layer, and the HDA 1Cr13 steel has formed a compact Al 2O 3 oxide film and Cr 2O 3 oxidate. The research shows that the effect of Cr and Ni on oxidation resistance of aluminized stainless steel is most significant.
出处
《应用科技》
CAS
2002年第4期9-12,共4页
Applied Science and Technology
