采用浆料包渗法,以B4C为供硼剂,NH4Cl+KBF4为复合活化剂,SiC为填充剂,蛋白质(鸡蛋清)为粘结剂,在W6Mo5Cr4V2高速钢表面制备渗硼层.研究了渗硼温度对渗硼层组织和性能的影响.结果表明:包渗温度650℃时,渗硼层组织以Fe2B相为主,在750℃、850℃时,形成了V2B3相,在950℃时渗硼层组织中出现了Fe2Si04B06相;渗硼层的显微硬度随温度的升高先增后降低,其最小显微硬度值为810 HV,为基体的(235 HV) 3.5倍;渗硼层最小摩擦系数为0.12,为基体的1/3.磨损机制在750℃时发生转变,由粘着磨损为主转变为磨料磨损为主.
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