纳米颗粒控制金属相变的机制及在热浸镀锌铝镁钢板中的应用展望  

Mechanism of Metal Phase Transformation Controlled by Nanoparticles and its Application Prospect in Hot-dip Galvanized Al-Mg Steel Plate

作　　者：徐诗鑫 陈欣 张芝民 朱科 王水根[2,4] 冯科[1,2,3] XU Shixin;CHEN Xin;ZHANG Zhimin;ZHU Ke;WANG Shuigen;FENG Ke(CISDI Research&Development Co.Ltd.,Chongqing 401122,China;CISDI Engineering Co.Ltd.,Chongqing 401122,China;Chongqing Key Laboratory for Metallurgical Intelligent Equipment,Chongqing 401122,China;CISDI Thermal&Environmental Engineering Co.Ltd.,Chongqing 401122,China)

机构地区：[1]中冶赛迪技术研究中心有限公司,重庆401122 [2]中冶赛迪工程技术股份有限公司,重庆401122 [3]冶金智能装备重庆市重点实验室,重庆401122 [4]重庆赛迪热工环保工程技术有限公司,重庆401122

出　　处：《工业加热》2025年第3期11-15,共5页Industrial Heating

摘　　要：锌铝镁镀层是近年来发展很快的产品,由于镀层的化学成分比较复杂,组织的控制也很困难,不同的结晶条件会产生不同的组织,也就表现出不同的外观和性能,最为顽固的是出现黑点状的缺陷。热浸镀过程,实际上是一种低熔点金属在基材上的凝固过程,凝固过程中的相控制对于结构设计和性能优化至关重要,传统的相控制方法已经遇到了瓶颈。提出了一种通过外加纳米颗粒来控制凝固过程中的相变的思路,有望使得镀层凝固的冷却过程人为可控,按照人们的意愿凝固成均匀一致的MgZn2化合物,彻底解决锌铝镁黑点缺陷顽疾。Zinc-aluminum-magnesium coating is a product that has developed rapidly in recent years.Due to the complex chemical composition of the coating,the control of the structure is also difficult.Different crystallization conditions will produce different structures,which will show dfferent appearance and performance.The most stubborn is the appearance of black spot defects.The hot dipping process is actually a solidification process of a low melting point metal on the substrate.The phase control in the solidification process is very important for structural design and performance optimization.The traditional phase control method has encountered bottlenecks.An idea of controlling the phase transition during solidification by adding nanoparticles is proposed,which is expected to make the cooling process of coating solidification artificially controllable,and solidify into a uniform MgZn,compound according to people's wishes,so as to completely solve the problem of zinc-aluminum-magnesium black spot defects.

关 键 词：纳米颗粒 相变控制 热浸镀锌铝钢板 

分 类 号：TG162.83[金属学及工艺—热处理] TQ153.15[金属学及工艺—金属学]