牛立斌,王晓刚,樊子民

• 1:西安科技大学材料科学与工程学院

摘要(Abstract)：

选用直径200μm,纯度99.5%的钛丝丝网为反应源,通过熔渗+原位反应法制备出一种Al3Ti金属间化合物颗粒增强铝基表面复合涂层。通过差热分析仪(DTA)、X衍射分析仪(XRD)、电子扫描显微镜(SEM)、显微硬度计、摩擦磨损试验机对Ti丝与基体间的合成温度以及所得到的复合涂层进行分析,结果表明:根据差热分析的峰的变化情况,确定反应温度为890℃,当保温时间延长到20 min时,钛丝在铝基体中的反应较完全,原位合成为块状和条状的Al3Ti颗粒;颗粒的显微硬度(562 HV0.1)大约为基体显微硬度(123 HV0.1)的4.5倍;相对于没有增强体的Al基体而言,在载荷为10 N的干滑动磨损条件下,保温20 min所制备的复合涂层表现出较好的耐磨性,其磨损机制表现为粘着磨损和磨粒磨损共存。

关键词(KeyWords)： 金属间化合物;原位反应;复合涂层;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50174046);; 陕西省科技统筹计划项目(No.KTCQ1-17);; 西安市技术转移工程项目(CX1261)

作者(Author): 牛立斌,王晓刚,樊子民

DOI: 10.13289/j.issn.1009-6264.2013.12.027

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