in this paper, an investigation has been made about the low temperature electrolytic liquih boronizing process at 580—620℃ and the microstructure and hardness of boronizing layer was analysed.
本文实验了580~620℃低温电解渗硼工艺,并对其渗硼层的显微组织及硬度进行了分析与测定。
the basical factors influencing the thickness of boronizing layer were studied, meanwhile the hardness and wear-resistance of the layer were determined.
研究了影响渗层厚度的基本因素,并测定渗层的硬度和耐磨性。
the results show that the better boronizing layer on the surface of steel can be obtained by using the boronizing supply agent, and re can improve the quality of boriding layer.
结果表明:采用该渗硼剂可使钢件表面获得较好的渗硼层,且稀土可以提高渗层的质量。
both boride and carbonization can strengthen and thin the microstructure and improve greatly support of boride layer, this will benefit binding of the boronizing layer and matrix.
过渡区中碳化物及硼化物相的存在可强化和细化过渡区的组织,提高过渡区对硼化物层的支撑作用,有利于硼化物层与心部的结合。
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;
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;
hardness profiles of boronizing layer with re and without re addition were measured by using micro-hardness tester from surface to core.
用显微硬度计对加稀土和不加稀土的渗硼层显微硬度进行了测量和分析;
composition and quantity of all elements in a spot were tested and changes of b, cr atom in boronizing layer were analyzed by using energy-dispersive spectrometer (eds).
用扫描能谱仪(eds)定点的测定了渗层中各处元素的组成及其含量,分析了铬元素在渗硼过程中的变化情况;
the phase changes and thickness of the boronizing layer with different holding time are studied.
研究了不同时间感应加热对渗硼层层深的影响及显微组织变化。