论文部分内容阅读
为提高Q235钢的静态腐蚀性能,采用Fe、B_4C、TiO_2及Al粉末,利用氩弧熔覆技术,经过原位合成反应,在Q235表面制备了铁基TiB_2-Al_2O_3复合涂层,并对其组织结构,显微硬度及耐蚀性进行了研究.实验结果表明:复合涂层内生成了TiB_2、Al_2O_3、Ti C、Fe_2B相,涂层的显微硬度能够达到913.5HV0.2,耐酸腐蚀性能是基体的2.63倍,耐盐腐蚀性能是基体的2.48倍,耐煤水腐蚀性能是基体的2.59倍,耐人工海水腐蚀性能是基体的2.60倍.涂层提高了基体在各类腐蚀介质中的耐蚀性.
In order to improve the static corrosion performance of Q235 steel, the Fe-based TiB 2 -Al 2 O 3 composite coating was prepared on Q235 surface by the in-situ synthesis using Fe, B_4C, TiO_2 and Al powders by argon arc cladding technique. Structure, microhardness and corrosion resistance were studied.The experimental results show that TiB_2, Al_2O_3, TiC and Fe_2B phase are formed in the composite coating, the microhardness of the coating can reach 913.5HV0.2, the acid corrosion resistance is 2.63 times the matrix, salt corrosion resistance is 2.48 times the matrix, corrosion resistance to coal-water 2.59 times the matrix, resistance to artificial seawater corrosion performance is 2.60 times the substrate. Coating to improve the substrate in various types of corrosive media resistance Erosive.