自保护硼氮共渗膏剂的研究

A Study of Self-protecting Boron-nitriding Paste

关键词:  硼氮共渗膏剂  自保护  固体硼氮复合渗

Key words:  boron-nitriding paste  self-protecting  powder boron-nitriding

摘要:

为研究自配制的自保护硼氮共渗膏剂的性能,对Q235钢、45钢、T8钢和GCr15钢等试样进行共渗试验。实验表明,45钢以选用890℃共渗为宜;钢中的碳阻碍硼的渗入;涂层厚度以4mm为宜;膏剂硼氮共渗试样的耐磨性与固体硼氮复合渗相当,而比固体渗硼试样则好得多;经膏剂硼氮共渗的试样耐100%HCl和30%H₂SO₄的腐蚀性与固体硼氮复合渗处理过的试样相当,二者均比1Cr18Ni9Ti钢要好;Q235钢高温缓冷后易出现Fe₃N相。表明该膏剂共渗性能与固体硼氮相当,而优于固体渗硼。

Abstract:

The composition of Boron-nitriding paste,the mechanism of self-protecting and the properties after treated were studied.Experiments show that the properties treated by this paste are as good as that treated by powder boron nitriding,and these two are better than that of powder boro-nizing. This pasty agent has high ability of boron-nitriding and is easy to be operated with low costs. After treated,the parts can be washed easily,and their surfaces are clean and have no corrosive spots.