| 机械合金化法制备碳钢管内壁NiCrAlY涂层及激光重熔 |
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| 引用本文： | 沈以赴,唐忠婷,冯晓梅.机械合金化法制备碳钢管内壁NiCrAlY涂层及激光重熔[J].南京航空航天大学学报,2011,43(6). |
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| 作者姓名： | 沈以赴 唐忠婷 冯晓梅 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院,南京,211106 |
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| 基金项目： | 国家自然科学基金(51075205)资助项目; 南京航空航天大学基本科研业务费专项科研(NS2010155)资助项目 |
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| 摘 要： | 利用行星球磨原理,以NiCrAlY粉末为原料,采用机械合金化(MA)工艺在碳钢管状零件内壁制得NiCrAlY合金涂层,并利用CO2激光器对涂层进行激光重熔处理.采用X射线衍射分析(XRD)、扫描电镜分析(SEM)、能谱分析(EDS)及维氏硬度试验研究了激光重熔前后涂层的显微组织及性能变化.结果表明,在球磨转速为400 r/min,球磨时间为10h的工艺条件下,在零件内表面形成结合性较好的涂层,其厚度约为40μm；激光重熔后,其组织结构更均匀致密.
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| 关 键 词： | NiCrAlY 机械合金化 激光重熔 涂层 |
Mechanically Alloyed and Laser Remelted NiCrAlY Coatings on Inner Surface of Carbon Steel Tubular Components |
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| Shen Yifu
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Tang Zhongting
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Feng Xiaomei.Mechanically Alloyed and Laser Remelted NiCrAlY Coatings on Inner Surface of Carbon Steel Tubular Components[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(6). |
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| Authors: | Shen Yifu Tang Zhongting Feng Xiaomei |
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| Institution: | Shen Yifu,Tang Zhongting,Feng Xiaomei(College of Materials Science and Technology,Nanjing University of Aeronautics & Astronautics,Nanjing,211106,China) |
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| Abstract: | A novel mechanical alloying(MA) method is developed to prepare NiCrAlY coatings on the inner surface of a tubular component using a planetary ball mill.A CO2 laser is applied to remelt the mechanically alloyed coating.The phase constitution,microstructure,composition and microhardness of the as-coated and laser remelted coatings are investigated by means of X-ray diffraction(XRD),scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS) and hardness testing.The results reveal that the NiCrAlY co... |
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| Keywords: | NiCrAlY mechanical alloying laser remelting coating |
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