采用脉冲激光器在Q235钢基体表面制备了哈氏合金涂层和铁基非晶复合涂层, 并利用扫描电子显微镜、X射线衍射仪、维氏硬度仪和电化学工作站等对涂层的显微组织、相组成、硬度及耐腐蚀性能进行表征。结果表明, 两种涂层均与基体形成了冶金化结合界面, 并且无明显的裂纹和孔洞。铁基非晶复合涂层兼具结晶组织和非晶组织, 而哈氏合金涂层则主要由共晶相和初晶相构成。研究发现, 两种涂层耐腐蚀性能相当, 但铁基非晶复合涂层具有更高的硬度。

Hastelloy coating and Fe-based amorphous composite coating were prepared by pulsed laser on Q235 steel substrate. Scanning electron microscope, X-ray diffractionmeter, Vickers hardness tester and electrochemical system were applied to characterizing the microstructure, phase composition, hardness and corrosion resistance of coatings. The results show that metallurgical bonding interface without obvious cracks and pores is observed between both coatings and substrate. Furthermore, Fe-based amorphous composite coating displays both crystalline structure and amorphous structure, while Hastelloy coating mainly owns eutectic and primary structures. It is found that two types of coatings show the similar corrosion resistance, while the Fe-based amorphous composite coating exhibits higher hardness than the Hastelloy coating.