| 摘要: |
| 为开发适于切削镍基高温合金的刀具涂层，采用脉冲电弧离子镀沉积TiAlSiN涂层，研究Si添加对TiAlN涂层耐磨性、抗氧化性及车削性能的影响。结果表明：Ti0.45Al0.45Si0.10N涂层具有最高的结合力（100 N）和硬度（35 GPa）。800 ℃高温下，Ti0.40Al0.40Si0.20N涂层已经磨穿，而Ti0.50Al0.50N和Ti0.45Al0.45Si0.10N的磨损率分别为4.48×10-6和2.65×10-6 mm3·N-1·m-1；3种涂层都存在粘着磨损，其中，Ti0.50Al0.50N和Ti0.45Al0.45Si0.10N涂层分别还发生了磨粒磨损。此外，Si的合金化显著提高了TiAlN涂层的抗氧化性。使用涂层刀具车削镍基高温合金时的寿命长短依次为Ti0.50Al0.50N < Ti0.40Al0.40Si0.20N < Ti0.45Al0.45Si0.10N。3种涂层刀具磨损形式以粘着磨损、氧化磨损及磨粒磨损为主。综上，因其优异的力学和耐磨耐氧化性能，Ti0.45Al0.45Si0.10N涂层具有更好车削性能。 |
| 关键词: 脉冲电弧离子镀 TiAlN TiAlSiN 高温摩擦磨损 干式车削加工 |
| DOI：10.11933/j.issn.1007-9289.20180611001 |
| 分类号:TG174.444 |
| 基金项目:国家自然科学基金（51522502，51875109，51801032）；广东市科学计划项目（201704030129） |
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| Preparation and Cutting Performance of TiAlSiN Coatings by Pulsed Arc Ion Plating |
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LIU Cihai, LI Jifei, WU Zhengtao, XU Yuxiang, WANG Qimin
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School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
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| Abstract: |
| To develop cutting coatings for machining Ni-based superalloys, TiAlSiN coatings with various Si contents were deposited by pulsed arc ion plating. The effect of Si addition on the mechanical tribological and oxidation properties and turning performances of the coating were investigated, respectively. The Ti0.45Al0.45Si0.10N has the highest adhesion strength of 100 N and hardness of 35 GPa. Due to poor mechanical properties, Ti0.40Al0.40Si0.20N is worn out after the high temperature tribological test at 800℃. The wear rates of Ti0.50Al0.50N and Ti0.45Al0.45Si0.10N are 4.48×10-6 and 2.65×10-6 mm3·N-1·m-1, respectively. Adhesive wear is observed in all coatings. Abrasive wear occurred in Ti0.50Al0.50N and Ti0.45Al0.45Si0.10N, respectively. Alloying with Si significantly improved the oxidation resistance of TiAlN coatings. Furthermore, the lifetimes of coated inserts during turning In718 are listed as Ti0.50Al0.50N < Ti0.45Al0.45Si0.10N < Ti0.40Al0.40Si0.20N. The primary wear mechanisms of the three coating tools are adhesive, oxidation and abrasive wear. The Ti0.45Al0.45Si0.10N coating shows a superior cutting performance owing to its excellent mechanical properties and outstanding wear and oxidation resistance. |
| Key words: pulsed arc ion plating TiAlN TiAlSiN high temperature frictional wear dry turning |
