材料工程2025，Vol.53Issue(12)：43-55,13.DOI:10.11868/j.issn.1001-4381.2025.000284
退火处理对冷喷涂Zn-Al合金涂层组织和性能的影响
Influence of annealing treatment on microstructure and properties of cold-sprayed Zn-Al alloy coatings
摘要
Abstract
Cold-sprayed Zn-Al composite coatings can provide good corrosion resistance for magnesium alloys.This experiment employs AZ31B magnesium alloy as the substrate for the deposition of a Zn-Al composite coating.To further improve the performance of cold-sprayed Zn-Al composite coatings,the coatings are subjected to annealing treatment at 200,250℃,and 300℃.The microstructure morphology and properties of the cold-sprayed Zn-Al composite coatings before and after heat treatment are analyzed by X-ray diffractometer(XRD),scanning electron microscope(SEM),microhardness tester,electrochemical workstation,and salt spray corrosion test equipment.The results show that after annealing treatment at different temperatures,the coatings do not undergo oxidation or phase transformation,and the microstructure of the coatings becomes denser and the corrosion resistance improves after annealing treatment.With the increase of annealing temperature,the coatings show the phenomenon of annealing hardening.When the annealing temperature is 250℃,the composite coatings are the densest,and the porosity is 0.3998%.Electrochemical and salt spray tests show that the coatings after annealing treatment form a dense corrosion layer,which improves the corrosion resistance of the coatings.When the annealing temperature is 250℃,the corrosion resistance of the coatings is the best.关键词
冷喷涂/Zn-Al复合涂层/热处理/耐腐蚀性Key words
cold spraying/Zn-Al composite coating/heat treatment/corrosion resistance分类
通用工业技术引用本文复制引用
WANG Bingjie,CONG Shengyi,ZHOU Hongxia..退火处理对冷喷涂Zn-Al合金涂层组织和性能的影响[J].材料工程,2025,53(12):43-55,13.基金项目
青海省重点研发与转化计划国际合作专项(2024-HZ-809) （2024-HZ-809）
国家自然科学基金地区基金项目(52365028) （52365028）
