45钢渗硼工艺对渗层组织与性能的影响
Effect of Boronization Technology on Microstructure and Properties of Boronizing Layer on 45 Steel
袁庆龙, 曹晶晶
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作者单位：(河南理工大学 材料科学与工程学院, 河南 焦作 454003)
中文关键字：渗硼工艺； 渗硼层； 显微组织； 显微硬度； 耐蚀性
英文关键字：boronization technology; boronizing layer; microstructure; microhardness; corrosion resistance
中文摘要：研究了渗硼温度、保温时间和渗硼剂配方对45钢渗硼层组织和性能的影响。结果表明：在给定实验条件下，渗硼层组织致密，硼化物呈针齿状楔入基体，与基体结合牢固；渗硼层厚度随渗硼温度的升高、保温时间的延长而增加。相比而言，温度对渗硼层厚度的影响大于时间的影响；渗硼层中FeB相使表面硬度显著提高；渗硼层抗盐酸、硫酸、氢氧化钠腐蚀性优良。
英文摘要：The effects of boronizing temperature, holding time and formula on microstructure and properties of boronizing layer on 45 steel were investigated. The results show that, in the given conditions, the microstructure of boronizing layer is dense, boride wedged base in the shape of spider, which combines with base firmly; as the temperature heightens, boronizing thickness is significantly added and when the time extends, boronizing thickness is also significantly increased. Compared with the time, the impact of temperature factors on the layer thickness is greater. The surface hardness of 45 steel is greatly improved for the exist of FeB; the corrosion resistance of boronizing layer is excellent which can resist hydrochloric acid, sulfuric acid and sodium hydroxide.