论文部分内容阅读
用化学和电化学这两种处理方法对铁在含有碳化钙(CaC_2)的氯化钙(GaGl_2)盐浴中渗碳的动力学进行了测定,渗碳温度为920℃。为了研究渗碳的机制,进行了阳极和阴极电解实验。研究发现,化学处理或阳极处理(铁试样作为阳极)时,铁的渗碳速率受碳在铁中的扩散速率控制。阴极处理时,在阴极产生极化,渗碳速率较慢,并且当阴极电流密度较大时,渗碳过程受到抑制。为了解释在碳化钙盐浴中铁的电极反应,作者提出了一种混合电极模型。
The kinetics of carburization of iron in a calcium chloride (GaGl 2) salt bath containing calcium carbide (CaC 2) was measured by both chemical and electrochemical methods at a carburizing temperature of 920 ° C. In order to investigate the mechanism of carburization, anodic and cathodic electrolysis experiments were performed. The study found that the carburization rate of iron is controlled by the diffusion rate of carbon in iron when chemically treated or anodized (the iron sample serves as the anode). Cathode treatment, the polarization in the cathode, carburization rate is slower, and when the cathode current density is greater, the carburization process is inhibited. To explain the electrode reaction of iron in a calcium carbonate salt bath, the authors propose a hybrid electrode model.