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首页> 外文期刊>Applied Surface Science >Study on the microstructure and wear resistance of the composite coatings fabricated on Ti-6Al-4V under different processing conditions
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Study on the microstructure and wear resistance of the composite coatings fabricated on Ti-6Al-4V under different processing conditions

机译：不同工艺条件下在Ti-6Al-4V上制备的复合涂层的组织和耐磨性研究

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摘要

Composite coatings mainly containing titanium carbides and borides were produced by laser surface alloying of Ti-6Al-4V with graphite and boron mixed powders. The test results show that the coatings have higher hardness (1600-1700 HV0.1) and are more resistant to wear than the as-received sample. Laser scanning speed and the content of alloying elements (weight ratio of graphite to boron) have an effect on both the microstructure and the wear resistance of the coatings. TEM results show that strip titanium carbides and borides grow alternately and thus restrain the formation of coarse needle-like TiB and dendritic TiC crystals produced by laser alloying of titanium alloys with boron and graphite separately. (c) 2006 Elsevier B.V. All rights reserved.
机译：Ti-6Al-4V与石墨和硼混合粉末的激光表面合金化处理产生了主要包含碳化钛和硼化物的复合涂层。测试结果表明，与原样相比，该涂层具有更高的硬度（1600-1700 HV0.1），并且具有更高的耐磨性。激光扫描速度和合金元素的含量（石墨与硼的重量比）对涂层的微观结构和耐磨性都有影响。 TEM结果表明，带状碳化钛和硼化物交替生长，从而抑制了钛合金分别与硼和石墨激光合金化而生成的粗针状TiB和树状TiC晶体的形成。 （c）2006 Elsevier B.V.保留所有权利。

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