论文部分内容阅读
研究了锌池中微量合金元素Ni和Ti协同作用对Q235钢热浸镀锌层组织性能的影响。将Q235钢分别在Zn-0.03%Ni-0.02%Ti、Zn-0.06%Ni-0.02%Ti、Zn-0.06%Ni-0.03%Ti、Zn-0.06%Ni-0.04%Ti以及Zn-0.05%Ni-0.03%Ti锌池中热浸镀0.5~5 min,然后用光学显微镜、扫描电镜和能谱分析仪分析了镀层组织结构及厚度的变化。实验结果表明,锌池中添加0.03%Ni-0.02%Ti基本能抑制Q235钢合金层的Fe-Zn反应,且随Ni或Ti含量的增加,抑制效果更加明显。但是当Ti含量大于0.03%时,镀层中会形成溶解有少量Ni的Zn-Fe-Ti三元化合物,且随Ti含量的增加,三元化合物的量也逐渐增加。
The effect of the synergistic effect of trace elements Ni and Ti on the microstructure and properties of hot-dip galvanized Q235 steel was studied. The Q235 steel was sintered in the presence of Zn-0.03% Ni-0.02% Ti, Zn-0.06% Ni-0.02% Ti, Zn-0.06% Ni-0.03% Ti, Zn-0.06% Ni-0.04% Ti and Zn-0.05% Ni -0.03% Ti zinc bath for 0.5 ~ 5 min, and then analyzed the changes of the microstructure and thickness by optical microscope, scanning electron microscope and energy spectrum analyzer. The experimental results show that the addition of 0.03% Ni-0.02% Ti can inhibit the Fe-Zn reaction in the Q235 steel alloy layer. With the increase of Ni or Ti content, the inhibition effect is more obvious. However, when the content of Ti is more than 0.03%, Zn-Fe-Ti ternary compound with a small amount of Ni dissolved is formed in the coating, and the amount of ternary compound increases with the increase of Ti content.