【摘要】 用 Fe₂O₃:Fe:Al₂O₃=1:1:1的混合粉末,对20、20Cr、20Cr2Ni4A、40Cr 和 GCr15五种工业用钢在860～1100℃,经8～80h 内氧化处理。研究了这些钢的内氧化过程和钢中的内氧化物。结果表明,在钢的内氧化过程中,被内氧化的合金和杂质元素既有长程逆扩散也有短程扩散;钢的内氧化物为(Mn_0.83F_0.17)·(Al_1.96Fe_0.04)O₄、Fe（AlCr）₂O₄和 Fe₂SiO₄;在同一颗内氧化物的不同部位,被内氧化的合金和杂质元素含量不同;内氧化物的成分与其沿由表到里方向的分布位置无一定关系。更多还原

【Abstract】 20,20Cr,20Cr2Ni4A,40Cr and GCr15 steels are inter（?）allyoxidized for 8 to 80 hours at temperature 860～1100℃ using a powder mixtureof Fe₂O₂:Fe:Al₂O₃=1:1:1.The process of internal oxidation and internaloxides in the steels have been investigated.Experimental results show that,during the process of internal oxidation the diffusion of alloying and impu-rity elements is both long range counter-diffusion and short range diffusion;the internal oxides are(Mn_08.3Fe_0.17)(Al_1.96Fe_0.04)O₄,Fe（AlCr）₂O₄ and Fe₂ SiO₄;the element contents are different site in an oxide particle;there is norelationship between composition of the oxide and its position from surfaceto center of specimen.更多还原