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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 iron-based amorphous composite coating were prepared on the surface of Q235 steel substrate by pulsed laser. The microstructure of the coating was characterized by scanning electron microscopy, X-ray diffraction, Vickers hardness tester and electrochemical workstation Tissue, phase composition, hardness and corrosion resistance were characterized. The results show that both coatings form a metallurgical interface with the matrix without obvious cracks and holes. The iron-based amorphous composite coating has both the crystalline structure and the amorphous structure, while the Hastelloy coating mainly consists of the eutectic phase and the primary crystal phase. The study found that the corrosion resistance of the two coatings is comparable, but the iron-based amorphous composite coating has a higher hardness.