Effect of Pulsed Laser on the Structure and Morphology of Alumina-Zirconia Coatings
Effect of Pulsed Laser on the Structure and Morphology of Alumina-Zirconia Coatings作者机构：Department of Mechanical and Manufacturing Engineering Farmingdale State College Farmingdale USA The American University in Cairo Yousef Jameel Science & Technology Center Cairo Egypt Zewail City of Science & Technology Cairo Egypt.
出 版 物：《Journal of Surface Engineered Materials and Advanced Technology》 (表面工程材料与先进技术期刊（英文）)
年 卷 期：2013年第3卷第3期
页 面：249-256页
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
主 题：Laser Annealing Alumina-Zirconia Coatings Surface Morphology Plasma Sprayed Coatings
摘 要：The effect of excimer laser annealing on the structure and morphology of ceramic coatings were investigated. Alumina-40% zirconia (AZ-40) coatings were sprayed with a water-stabilized plasma spray gun. The coated surface was treated by excimer laser having a wavelength of 248 nm and pulse duration of 24 ns. The surface structure of the treated coating was examined by field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD). A detailed parametric study was performed to investigate the effects of different parameters such as laser energy density (fluence), pulse repetition rate (PRR), and the number of shots on the mechanical properties, surface morphology, and microstructure of the coatings. The results of this study indicated that laser energy and pulse repetition rate have significant effects on surface morphology, porosity, and microstructure of the coating.
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