• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (19): 213-220.doi: 10.3901/JME.2019.19.213

• 制造工艺与装备 • 上一篇    

硬质合金刀具高能离子源增强多弧镀AlCrTiSiN梯度涂层制备及性能研究

蔡飞1, 高营1,2, 蔡习军1,2, 张林1, 张世宏1,2, 王启民3   

  1. 1. 安徽工业大学现代表界面工程研究中心 马鞍山 243000;
    2. 安徽工业大学材料科学与工程学院 马鞍山 243000;
    3. 广东工业大学机电工程学院 广州 510006
  • 收稿日期:2018-06-11 修回日期:2019-01-19 发布日期:2020-01-07
  • 通讯作者: 张世宏(通信作者),男,1981年出生,博士,教授,博士研究生导师。主要研究方向为刀具涂层和刀具切削。E-mail:tougaoyouxiang206@163.com
  • 作者简介:蔡飞,男,1986年出生,博士,讲师。主要研究方向为刀具涂层和刀具切削。E-mail:caifei32@126.com
  • 基金资助:
    安徽省自然科学基金(1808085QE131)和国家自然科学基金(51305002,51522502)资助项目。

Study on Preparation and Properties of Gradient AlCrTiSiN Coated Cemented Carbide Tools Deposited by Ion Source Enhanced Multi-arc Ion Plating Technology

CAI Fei1, GAO Ying1,2, CAI Xijun1,2, ZHANG Lin1, ZHANG Shihong1,2, WANG Qimin3   

  1. 1. Research Center of Modern Surface and Interface Engineering, Anhui University of Technology, Maanshan 243002;
    2. School of Material Science and Engineering, Anhui University of Technology, Maanshan 243002;
    3. School of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou 510006
  • Received:2018-06-11 Revised:2019-01-19 Published:2020-01-07

摘要: 采用离子源增强的多弧离子镀新技术,在硬质合金刀具表面制备了不同含Si层梯度结构的AlCrTiSiN梯度涂层,并对涂层组织结构、残余应力、结合强度、摩擦磨损以及铣削和钻削加工灰铸铁性能进行了详细的研究。结果表明:不同含Si层梯度结构的AlCrTiSiN涂层主要由固溶的(Al,Cr) N、(Al,Ti) N相和非晶态Si3N4相组成。其中,含Si层梯度变化最缓和的G3(Gradient 3)涂层具有较高的结合强度,较低的残余压应力、摩擦因数和磨损率。铣削和钻削试验显示,涂层刀具的切削磨损机理主要表现为磨粒磨损和粘着磨损。G3涂层降低了磨粒磨损,其刀具的铣削和钻削寿命均最高,这主要得益于其含Si层的梯度设计、适当的压应力(-3.8 GPa)以及良好的膜基结合强度。研究结果表明,通过对含Si层进行梯度设计可显著提高涂层刀具的切削性能。

关键词: 刀具涂层, 切削, 梯度结构, 结合强度, 磨损

Abstract: Ion source enhanced multi-arc ion plating technology is adopted to fabricate the AlCrTiSiN composite coatings with different Si gradient structures on the surface of cemented carbide cutters. The effects of Si gradient coating structures on the microstructure, residual stresses, adhesion strength, friction and wear properties, milling and drilling against gray cast iron are studied in detail. The results showed that AlCrTiSiN composite coatings with different Si gradient coating structures are comprised of solid solution (Al, Cr)N, (Al, Ti)N and amorphous Si3N4. Among all the coatings, the G3 (Gradient 3) coating with the most gentle Si gradient structure show higher adhesion strength, the lowest residual compressive stress and the lowest friction coefficient and wear rate. The wear mechanism of coated cutters is mainly characterized by abrasive wear and adhesive wear. G3 coating decreased the abrasive wear, and also the milling and drilling experiment results showed that the G3 coated tools show the best cutting performance, which is attributed to the gradient design of Si containing layer, proper residual compressive stress (-3.8 GPa) and higher adhesion strength. This result show that gradient design of Si containing coating could effectively improve the cutting performance of the coated cutter.

Key words: tool coating, cutting performance, gradient structure, adhesion strength, wear resistance

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