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采用放电等离子烧结(SPS)制备不同Al含量的Al_xFeCrNiCoCu(x=0,1,2,3)高熵合金涂层.通过XRD、SEM和冲蚀磨损等检测方法,研究了Al含量对该高熵合金涂层的组织及冲蚀磨损性能的影响.结果表明:FeCrNiCoCu高熵合金的微观组织主要为简单FCC结构的富Cu相及富Al相.随着Al元素增加,涂层的微观结构出现由FCC向BCC的转变.同时,涂层的硬度、耐冲蚀性也显著提高.随着冲蚀角度的增加,涂层的冲蚀磨损量逐渐增加,表现出脆性材料的冲蚀磨损特性.在冲蚀角度为90°时,随着Al元素的增加,涂层的主要冲蚀磨损机理逐渐由微切削和锻造挤压转变为犁削.
The Al_xFeCrNiCoCu (x = 0,1,2,3) high-entropy alloy coatings with different Al content were prepared by spark plasma sintering (SPS). The influences of Al content on the high entropy The results show that the microstructure of FeCrNiCoCu high entropy alloy is mainly Cu-rich phase and Al-rich phase of simple FCC structure.With the increase of Al element, the microstructure of the coating appears FCC to BCC transformation.At the same time, the coating hardness, erosion resistance also significantly increased.With the erosion angle increases, the erosion of the coating wear gradually increased, showing the brittle erosion erosion properties of materials in When the erosion angle is 90 °, the main erosive wear mechanism of the coating gradually changes from micro cutting and forging extrusion to plowing as the Al element increases.