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本文阐述了用NH_3和SO_2进行辉光离子氧—硫—氮三元共渗工艺的试验研究。试样材料选用45~#钢、Cr_(12)MoV、3Cr_2W_8等。对共渗后的试样进行了渗层的组织分析和表面状态观察;用X—射线测定了渗层的相结构。用电子探针分析了共渗试样的表层成分;测量了渗层的显微硬度;讨论了不同流量比、温度、时间对渗层组织和渗层厚度的影响。结果表明:离子S—N—O共渗,其共渗温度:450—570℃,时间1～6h,先氮化后共渗,共渗后可以得到满意的共渗效果。
This paper describes the experimental study of glow-ion oxy-sulfur-nitrogen ternary permeation with NH_3 and SO_2. Sample material selection 45 ~ # steel, Cr_ (12) MoV, 3Cr_2W_8 and so on. The infiltrated layers were observed by microstructure and surface condition after the sample was infiltrated. The phase structure of the layer was measured by X-ray. Electron probe was used to analyze the surface composition of the sample. The microhardness of the sample was measured. The effect of different flow ratio, temperature and time on the microstructure and the thickness of the layer was discussed. The results showed that the co-permeation of the ion S-N-O with the co-permeation temperature of 450-570 ℃ and the time of 1-6h can be achieved by nitriding and co-infiltration.