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通过在粉末法渗硼过程中施加交流电场,对45钢进行中低温粉末法渗硼,研究交流电场增强中低温粉末法渗硼特性.结果表明,位于交流电场平行电极间不同位置处试样渗硼效果一致.施加适当的交流电场,可显著增加中低温(450~800℃)下的渗硼速度,硼化物层厚度与渗硼温度呈线性关系.交流电场增强渗硼渗层的形貌与常规渗硼的相似,呈锯齿状垂直楔入基体,其厚度与渗硼时间关系曲线呈抛物线型.采用交流电场易于获得单一Fe2B相渗层.在800℃渗硼时,交流电场增强渗硼的硼化物层厚度随电场电流增加而增加.交流电场的促渗作用是电场强化试样内的扩散、渗剂中的反应与扩散及提高渗罐内的实际温度等的综合结果.
By applying AC electric field in the process of powder boriding, the 45 steel was boronized by medium and low temperature powder, and the AC electric field was used to enhance the boronizing property of medium and low temperature powder method.The results showed that the sample infiltrated at different positions between parallel electrodes of AC electric field The effect of boron on the boronizing temperature is linear with the increase of the boronizing temperature and the boronizing effect.The AC electric field can significantly increase the boronizing rate at low and medium temperature (450 ~ 800 ℃) Conventional boronizing similar to sawtooth vertical wedge into the substrate, the thickness and boronizing time curve was parabolic .Under the AC field is easy to obtain a single Fe2B phase infiltration.At 800 ℃ boronizing, AC electric field enhanced boronizing The thickness of the boride layer increases with the increase of the electric field current.The effect of AC electric field is the comprehensive result of the diffusion in the electric field, the reaction and diffusion in the penetration agent and the actual temperature in the infiltration tank.