液中脉冲放电沉积ZrC陶瓷涂层的强化工艺及涂层性能的研究

采用特殊设计的专用脉冲电源液中放电表面强化设备,以硬质金属Zr为电极、45号钢为基体,进行了放电沉积ZrC陶瓷涂层的强化试验.研究了电参数、放电时间与涂层性能之间的关系,同时还研究了强化层形貌、物相结构及强化层的耐磨损性能.试验结果表明：强化层主要成分是ZrC;单个脉冲能量越大,形成的强化层就越厚;当放电时间超过25min时,强化层厚度基本不再增加;强化层具有良好的抗磨损性能.

Study on the intensity process and the performance of the ZrC ceramic coating with electrical discharge in the liquid

The paper mainly studies the intensity experiment of ZrC ceramic coating electrodeposited on 45 steel substrate with the metal Zr as a tool electrode, which approves for special electric discharge equipment. The relation of electrical parameter, intensity time and the performance of the coating is discussed. The surface morphology structure of the coating is analyzed, and the surface morphology of the layer is ob- served. The result of the experiment shows that the layer mostly comprises ZrC; the more each pulse-energy is, the thicker thickness of the layer is; when the discharge time exceeds 25 min, the thickness of the layer intensified does not still enhance; the intensified layer is with good antiwear property.