表面技术2017，Vol.46Issue(5)：238-243,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.05.038
热喷涂Fe基非晶涂层耐腐蚀性与孔隙率研究进展
Porosity and Corrosion Resistance of Fe-based Amorphous Coatings Pre-pared by Thermal Spraying
摘要
Abstract
Owing to excellent comprehensive performance, especially incomparable advantage in wear and corrosion resis-tance compared with traditional crystalline materials, thermal sprayed Fe-based amorphous coating is widely used for surface protection. However, as a typical lamellar structure, it has certain amount of pores inside as well, resulting in reduction of its corrosion resistance. Corrosion mechanism of Fe-based amorphous coating and factors influencing its corrosion resistance were first introduced, forming mechanism, classification and influencing factors of thermal sprayed Fe-based amorphous coating were summarized. Then research progress of relationship between pore defects and corrosion resistance of Fe-based amorphous coat-ing was introduced in details. According to analysis of thermal sprayed coating formation process and pore formation mechan-ism, poor spreading and deformation capabilities of particles had significant effects on mutual embedding and deformability of particles when the coating took shape. Therefore, Fe-based amorphous coating could improve the spreading and deformation capabilities of particles and even compactness of the coating by changing composition of spraying powder, particle size, adding second-phase particle and optimizing spraying process parameters. Remelting the coating microlayer rapidly by adopting laser rapid surface re-melting technology could also reduce the porosity and improve corrosion resistance of the coating.关键词
Fe基非晶合金/热喷涂/涂层/孔隙率/激光重熔/腐蚀机理Key words
Fe-based amorphousalloy/thermal spraying/coating/porosity/laser remelting/corrosion mechanism分类
矿业与冶金引用本文复制引用
姜超平,刘王强..热喷涂Fe基非晶涂层耐腐蚀性与孔隙率研究进展[J].表面技术,2017,46(5):238-243,6.基金项目
陕西省自然科学基金(2016JM5058) （2016JM5058）
中央高校基金(310831161005) Supported by Natural Science Foundation of Shaanxi Province of China (2016JM5058) and the Special Fund for Basic Scientific Research of Central Colleges, Chang an University (310831161005) （310831161005）
