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材料工程  2013 

冷喷涂制备颗粒增强钛基复合材料涂层研究

DOI: 10.3969/j.issn.1001-4381.2013.04.001

Keywords: 冷喷涂,PRTMC,SiC,显微组织,显微硬度

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Abstract:

以Ti粉为复合材料基体相,不规则的SiC粉为增强相,采用冷喷涂技术制备了SiC颗粒增强钛基复合材料涂层,研究了硬质相对复合涂层的显微组织和显微硬度的影响。结果表明制备的复合涂层由两个明显的区域组成表层的多孔区和内部的致密区,随距离涂层表面深度的增加,涂层的气孔率迅速下降;原始喷涂粉末中SiC的体积分数为30%,沉积后的复合涂层中SiC体积分数约为10%;此外,增强相SiC颗粒的加入不仅可有效地降低涂层的气孔率,还显著地提高了喷涂态涂层的显微硬度值,由(72±28)HV0.1提高至(125±17.75)HV0.3。

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