钨碳化物(WC ) 粒子能在原处通过在钨电线之间的反应被综合并且灰色的生铁熔融。不同合成涂层被调整流的温度和钨电线的中心距离获得,并且被 X 光检查衍射比较地观察,扫描电子显微镜学,和二身体的磨料穿测试。结果证明 WC 山峰的紧张由增加倒温度增加,并且第一变得由增加的中心距离强壮然后弱。在流的温度的情况下 1 400 #
Tungsten carbide (WC) particles can be in-situ synthesized through the reaction between tungsten wires and molten of gray cast iron. The different composite coatings were obtained by adjusting the pouring temperature and the center distance of tungsten wires, and were comparatively observed by X-ray diffraction, scanning electron microscopy, and two-body abrasive wear tests. The results show that the intensities of the WC peaks increase by the increasing pouring temperature, and firstly become strong and then weak by the increasing center distance. In case of the pouring temperature 1 400 ℃ and the center distance 0.5mm, the formed WC particles present quadrilateral and triangle-structure and are homogenously distributed in the matrix. The wear rate of the composite coatings for stable center distance gradually increases by increasing the loads, however, at a constant pouring temperature, it firstly decreases from 5.91 to 2.97 mg/cm2·h, and slightly increases to 3.98 mg/cm2·h by increasing the center distance.