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研究了高温合金K38G在850-1000℃下CO气氛中的腐蚀以及微晶化对高温合金K38G在CO气氛中腐蚀的影响结果表明：铸态K38G合金在CO气氛中表面形成Cr2O3，TiO2和Cr7C3，合金发生严重的内腐蚀，腐蚀动力学基本符合抛物线规律：而K38G微晶涂层表面形成单一的Al2O3膜，涂层未出现内腐蚀、其腐蚀增重仅为铸态合金的（1／3）－（1／5）可见微晶化大幅度提高了K38G合金在CO气氛中的抗腐蚀性能.
The effects of K38G superalloy in CO atmosphere at 850-1000 ℃ and the effect of microcrystallization on the corrosion of superalloy K38G in CO atmosphere were investigated. The results show that Cr2O3, TiO2 and Cr7C3 are formed on the surface of as-cast K38G alloy in CO atmosphere, The corrosion kinetics of the alloy is basically in accordance with the law of parabola: while the K38G microcrystalline coating forms a single Al2O3 film, the coating does not appear internal corrosion, the corrosion weight gain is only as high as (1/3) - (1/5) shows that microcrystallization greatly improves the corrosion resistance of K38G alloy in CO atmosphere.