中文摘要：

通过大气等离子喷涂技术（APS）在Q235基体上制备了一种Al2O3-13%TiO2颗粒增强的Fe基非晶态合金涂层。利用光学显微镜（OM）、X射线衍射仪（XRD）、扫描电子显微镜（SEM）、显微硬度计（MHT）和纳米压痕仪对该涂层的显微组织结构、相组成以及弹性模量等进行了研究。结果表明：采用APS喷涂技术制备的该涂层由白色和灰黑色物质组成,白色区域以Fe基非晶合金为主,灰黑色区域则是非晶合金与Al2O3-13%TiO2的混合结构。该涂层孔隙率为1.8%;非晶区域的显微硬度平均为780HV0.1,涂层的平均显微硬度达952HV0.1,由于陶瓷相的加入使得涂层显微硬度提升22%。纳米压痕仪的研究结果表明陶瓷颗粒强化区域杨氏弹性模量均值达232GPa,比未强化的Fe基非晶态区域高出37%。

英文摘要：

Al2O3-13%TiO2 particles strengthened Fe-based amorphous alloy composite coating was deposited onto Q235 substrate through air plasma spray technique （APS）. Optical Microscope （OM）, X-ray Diffractometer （XRD）, Microhardness Tester （MHT） and Nano Indenter were used to analyze the micro-structure, phase compositions, microhardness and Young＇s modulus of elasticity respectively. Results show that there are white and ash black areas in the coating, the white area mainly consisted of Fe-based amorphous alloy which was the primary phase of the coating, and the black area was mechanical mixed structure of the amorphous and ceramic phases. The porosity of the coating was 1.8%. The average microhardness of amorphous area was 780 HV0.1, and the average microhardness of the coating reached 952 HV0.1 which was promoted by 22% since the addition of ceramic particles. According to the test result by nano indenter, the Young＇s modulus of elasticity of the ceramic area was as high as 232GPa, which was 37% higher than that of the amorphous area.