陈天雄,胡立威,赵玲,李晋锋,乐国敏,罗晋如,王小英,戚力,刘学

• 1:中国工程物理研究院材料研究所
• 2:燕山大学材料科学与工程学院
• 3:哈尔滨理工大学材料科学与工程学院

摘要(Abstract)：

选取单质混合粉末,在纯Zr基板上利用激光熔覆技术制备了Zr-Cu-Ni-Al非晶涂层。采用X射线衍射分析仪(XRD)、扫描电镜(SEM)、显微硬度仪及电化学工作站研究了激光功率对熔覆层显微组织与性能的影响。结果表明:熔覆涂层由非晶相、金属间化合物及部分金属氧化物等共同组成,熔覆涂层树枝晶尺寸随着激光功率的增加而增大,熔覆涂层的硬度随着树枝晶尺寸增大而降低,涂层硬度最高可达(567.1±12.3)HV0.5,是基体硬度的4.2倍;当激光功率为1000 W,扫描速率为800 mm/min时,涂层的耐蚀性能最好,其中自腐蚀电位为-0.182 V,电流密度为5.2×10~(-8) A/cm~2。

关键词(KeyWords)： 激光熔覆;微观组织;Zr-Cu-Ni-Al涂层;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 四川省科技计划(2019YFG0217);; 国家自然科学基金(51601176)

作者(Author): 陈天雄,胡立威,赵玲,李晋锋,乐国敏,罗晋如,王小英,戚力,刘学

DOI: 10.13289/j.issn.1009-6264.2019-0328

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