激光与光电子学进展, 2020, 57 (21): 211406, 网络出版: 2020-10-26  

激光熔覆Ni-Al/Al2O3-13%TiO2金属陶瓷涂层的组织性能研究 下载: 703次

Microstructure and Properties of Laser Cladding Ni-Al/Al2O3-13%TiO2 Cermet Coating
作者单位
新疆大学机械工程学院, 新疆 乌鲁木齐 830047
摘要
为了进一步研究激光熔覆Ni-Al/Al2O3-13%TiO2金属陶瓷涂层的硬度及耐磨性,应用YLS-2000 光纤激光器在45钢基体上分别制备Ni-Al涂层及Ni-Al/Al2O3-13%TiO2金属陶瓷涂层。通过金相显微镜、扫描电子显微镜、X射线能谱分析、X射线衍射等系统地研究涂层的组织形貌、物相组成及元素分布。采用HXD-1000TB维氏硬度仪测定涂层截面显微硬度分布,利用M-2000磨损试验机进行磨损试验。结果表明,Ni-Al/Al2O3-13%TiO2金属陶瓷涂层的宏观成形质量较好,无裂纹,其涂层的截面最高硬度约为Ni-Al涂层的2倍,约为基体的4倍;其磨损体积约是45钢基体的1/8,相较于Ni-Al涂层的磨损体积降低了30%。Ni-Al/Al2O3-13%TiO2金属陶瓷涂层组织更加均匀致密,其硬度及耐磨性能相较于Ni-Al涂层及基体材料显著提升,该研究对于金属陶瓷材料的整体性能分析具有一定的参考意义。
Abstract
In order to further study the hardness and wear resistance of laser cladding Ni-Al/Al2O3-13%TiO2 cermet coating, a YLS-2000 fiber laser was used to prepare Ni-Al coating and Ni-Al/Al2O3-13%TiO2 cermet coating on a 45 steel substrate .The metallographic microscope, scanning electron microscope, electronic differential system energy spectrum analysis, X-ray diffraction and other systems were used to study the microstructure, phase composition, and element distribution of the coating. HXD-1000TB Vickers hardness tester was used to measure the micro-hardness distribution of the coating section, and the wear test was performed by using the M-2000 abrasion tester. The Ni-Al / Al2O3-13%TiO2 cermet coating has good macro-forming quality and no cracks. The maximum cross-section hardness of the coating is about twice that of the Ni-Al coating and about four times that of the substrate. Its wear volume is about 1/8 of that of the 45 steel substrate, which is 30% lower than that of Ni-Al coating. The structure of Ni-Al/Al2O3-13%TiO2 cermet coating is more uniform and dense, and its hardness and wear resistance are significantly improved compared to Ni-Al coating and matrix material. This research has certain reference significance for the overall performance analysis of cermet materials.

赵海洋, 李新梅, 卢彩彬. 激光熔覆Ni-Al/Al2O3-13%TiO2金属陶瓷涂层的组织性能研究[J]. 激光与光电子学进展, 2020, 57(21): 211406. Zhao Haiyang, Li Xinmei, Lu Caibin. Microstructure and Properties of Laser Cladding Ni-Al/Al2O3-13%TiO2 Cermet Coating[J]. Laser & Optoelectronics Progress, 2020, 57(21): 211406.

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