料浆渗铝工艺,渗层结构及其性能的研究

An Investigation of Processes, Constitution and Properties of Paste Aluminising

在实验室条件下进行了料浆渗铝,渗层结构及其性能的研究。一系列的料浆渗铝工艺用来获得不同的渗层。X射线衍身,金相,机械性能和电化学等试验方法用来探明渗层的结构和性能。结果表明,本工艺的所有渗层结构均为铝在α-Fe中的单相固溶体,因而延展性较好、不易剥剥和开裂。碳钢经料浆渗铝后,抗蚀性显著提高。根据实验结果,找出最佳渗铝工艺。另外,由于本工艺简单,处理后工件表面非常光洁,且不受零件形状限制,料浆渗铝将是提高碳钢抗蚀性的有效途径。

An investigation of processes, constitution and proporties of paste aluminising has been per- formed under conditions or laboratory. A range of processes of paste aluminising was used to obtain various superficial layer and X-ray diffraction, metallographic, mechanical, electrochemncal method, ect were used to clarify the constitution and properties of paste aluminising. The results show that all of the present paste alumining layer of carbon steol are α-Fe solid solution of monophase where aluminun is solved in, so it is possessed of greater elongation, not easy to peel off and crack. The resistance to corrosion of carbon steel is markedly increased by paste aluminising. In accordance with experimental data, the best pro- cess was found. In addition, for the process is simple and the surface of treated carbon steels is quite smooth as well as it is not limlted to the shape of parts, psste aluminising may be a effec- tive way of improving the resistance to corrosion of carbon steels.