合金元素Si-Al-Cr对铸铁高温腐蚀性能的影响

Effect of Alloyed Elements Si,Al,Cr on Corrosion Performance of Casting Irons in High Temperature

论述了合金元素Si、Al、Cr的耐高温腐蚀性能 ,上述三种元素在高温下形成氧化膜的PB比在 1～ 2间 ,电导率较小和较少的晶格缺陷 ,并且具有良好的热力学稳定性 ,可起到很好的高温防护作用 。

In this paper, anti-corrosing performance of alloyed elements Si, Al,Cr in high temperature are discussed briefly. Because there are facts that PB radio of their oxides produced in high temperature is much smaller and between 1 and 2, their specific conductivity is low, possibility of crystal defect is little and their thermal steadiness is better, these can make them protect from corrosion in high temperature. So alloyed elements Si,Al,Cr have been prior in term of anti-corrosion of high temperature.