石墨对TC4表面金刚石复合涂层组织与耐磨性能影响

刘攀; 孙华为; 秦建; 杨子佳; 刘晟; 刘永华; 王威; 陶汪; 周立涛

doi:10.7512/j.issn.1001-2303.2024.10.02

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石墨对TC4表面金刚石复合涂层组织与耐磨性能影响
The Influence of Graphite on the Microstructure and Wear Resistance of Diamond Composite Coating on TC4
2024年54卷第10期页码：10-16
纸质出版日期： 2024-10-25 ，
DOI： 10.7512/j.issn.1001-2303.2024.10.02
稿件说明：

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刘攀，孙华为，秦建，等.石墨对TC4表面金刚石复合涂层组织与耐磨性能影响［J］.电焊机，2024，54（10）：10-16.

LIU Pan, SUN Huawei, QIN Jian, et al.The Influence of Graphite on the Microstructure and Wear Resistance of Diamond Composite Coating on TC4[J].Electric Welding Machine, 2024, 54(10): 10-16.
刘攀，孙华为，秦建，等.石墨对TC4表面金刚石复合涂层组织与耐磨性能影响［J］.电焊机，2024，54（10）：10-16. DOI： 10.7512/j.issn.1001-2303.2024.10.02.

LIU Pan, SUN Huawei, QIN Jian, et al.The Influence of Graphite on the Microstructure and Wear Resistance of Diamond Composite Coating on TC4[J].Electric Welding Machine, 2024, 54(10): 10-16. DOI： 10.7512/j.issn.1001-2303.2024.10.02.

摘要

为改善钛合金材料的表面耐磨性能，选用TC4（Ti-6Al-4V）为基体材料，在TiZrCuNi钎料中加入一定比例的金刚石与石墨颗粒制成复合涂层材料，通过氩气保护感应钎焊的方法实现了TC4表面金刚石复合耐磨钎涂层的制备。研究了石墨的添加对复合涂层微观组织与耐磨性能的影响，揭示了活性元素Ti与金刚石和石墨的相互作用机制。研究结果表明加入石墨后，复合涂层主要由金刚石、TiC、Ti

Cu、ZrC、Zr

Cu和NiZr

与残余的石墨组成，由于石墨中存在着大量的螺旋位错，为TiC提供了形核质点，使其沿位错生长，从而使TiC的

生长方式演变为包抄生长并最终形成六边形形状。石墨的添加一定程度上弱化了复合涂层的耐磨性能，但可提高金刚石颗粒的出刃率，从而提升磨削效率。

Abstract

In order to improve the surface wear resistance of titanium alloy materials

TC4 (Ti-6Al-4V) was selected as the matrix material in this paper. A certain proportion of diamond and graphite particles were added to TiZrCuNi brazing material to make a composite coating material. The diamond composite brazing coating on TC4 was achieved by induction brazing under argon protection. The effect of graphite addition on the microstructure and wear resistance of composite coatings was studied

revealing the interaction mechanism between the active element Ti and diamond and graphite. The research results indicate that after adding graphite

the composite coating is mainly composed of diamond

TiC

ZrC

NiZr

and residual graphite. Due to the presence of a large number of helical dislocations in graphite

it provides nucleation sites for TiC

allowing it to grow along the dislocations

thus evolving the growth mode of TiC into enveloping growth and ultimately forming a hexagonal shape. The addition of graphite weakens the wear resistance of the composite coating to a certain extent

but can increase the cutting edge rate of diamond particles

thereby improving grinding efficiency.

关键词

TC4金刚石钎涂石墨耐磨性能

Keywords

TC4DiamondBrazing coatinggraphitewear resistance

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