摘要
作者采用粉末冶金方法,通过X-ray衍射谱、SEM观察等大量实验,研究了钢基-Al2O3金属陶瓷复合材料的烧结机理。用正交试验方法对烧结工艺参数和复合材料的组成进行了优化。试样经烧结并淬火处理,其硬度达HRC60~65,相对密度D为95%左右,抗拉强度σb为430~460MPa,延伸率δ为0.35%~0.85%,耐磨性能比60钢(经淬火并低温回火)高6.6倍。
The method of powder metallurgy is applied to Fe-Al2O3 cermet composites by X-ray diffraction spectrum, SEM observation, etc. The optimum parameters of sintering technology and the composition are determined by orthogonal tests. After specimen being sintered and quenched, its hardness is HRC60~65, D: about 95%, σb: 430~460MPa, δ: 0. 35~0. 85 %, wear resistance is 6. 6 times more than 60 steel which is quenched and tempered in low temperature.