反应液相烧结法制备钢用耐磨覆层材料

FABRICATION OF STEEL USED WEAR RESISTANCE CLADDING MATERIAL BY REACTION LIQUID SINTERING METHOD

反应液相烧结法在1 290℃下真空烧结成功制备出16 Mn钢用耐磨覆层材料,其表面硬质覆层的硬度HRA可达82-90。用扫描电镜、X射线衍射、电子探针和能谱对此种覆层材料的微观结构进行了分析,结果表明:硬质覆层中硬质相和粘结相分散均匀;硬质覆层的组织为α-Fe和Mo2FeB2,其中硬质相Mo2FeB2,约占体积比的70%;硬质覆层与16 Mn的界面为反应型,界面结合良好。磨损实验表明此种覆层材料具有良好的耐磨性。

16Mn used wear resistance cladding materials with surface hardness HRA 80-90 were developed by reaction liquid sintering method under the temperature of 1 290℃. The microstructure of the cladding layer was studied by SEM, XRD, EPMA and EDS. Results obtained show that the hard and binder phases are distributed uniformly. The cladding layer is composed of a- Fe and Mo2FeB2, the later has a large volume fraction of about 70% . The interface between the cladding layer and the substrate binds very well because of the reaction at the interface during sintering. Wear tests show that this cladding material has excellent wear resistance.