Guo Jianbo, Liu Zhengjun, Su Yunhai
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.
Materials (Basel). 2022 Aug 26;15(17):5884. doi: 10.3390/ma15175884.
In order to study the effect of element B on the corrosion resistance of stainless steel-based flux cored wire surfacing alloy, a stainless steel surfacing layer was prepared on the surface of carbon steel plate by melt electrode gas shielded welding, and then the microstructure, electrochemical corrosion resistance, and wear resistance of the surfacing layer were analyzed. The results show that the surfacing layer of surfacing alloy presents MB and Fe(C, B) phases based on austenite. Boride formed in deposited metal has good corrosion resistance. Therefore, adding the proper amount of B can significantly improve the corrosion resistance of the surfacing layer. When the boron content is 2%, the corrosion resistance is the best. The minimum self-corrosion current density is 1.75766 × 10 mA·cm, and the maximum self-corrosion potential is -0.254438 V. Maximum impedance curve radius. At this time, the wear resistance of the surfacing layer is also the best.
为研究元素B对不锈钢药芯焊丝堆焊合金耐蚀性的影响，采用熔化极气体保护焊在碳钢表面制备不锈钢堆焊层，进而分析堆焊层的微观组织、电化学耐蚀性及耐磨性。结果表明，堆焊合金堆焊层在奥氏体基体上呈现MB相和Fe(C,B)相。熔敷金属中形成的硼化物具有良好的耐蚀性。因此，添加适量的B可显著提高堆焊层的耐蚀性。当硼含量为2%时，耐蚀性最佳。自腐蚀电流密度最小值为1.75766×10 mA·cm，自腐蚀电位最大值为-0.254438 V。阻抗曲线半径最大。此时，堆焊层的耐磨性也最佳。
