添加Cu对PVD AlTiN涂层组织结构和性能的影响
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摘要
采用阴极弧蒸发离子镀在硬质合金刀具基体上分别沉积AlTiN和AlTiN-Cu涂层。采用扫描电镜(SEM)、X射线衍射仪(XRD)、纳米压痕仪等分析测试手段研究涂层形貌、组织结构和力学性能的影响规律,并对两种涂层刀具的切削性能进行研究。结果表明:Cu元素以单质的形式存在于AlTiN涂层中,Cu的添加使涂层晶粒由柱状晶转变成等轴晶,细化了涂层晶粒,使涂层的择优取向由(111)面变成(200)面;涂层的纳米硬度由29.01GPa降低到22.04GPa,弹性模量由347.10GPa降低到268.25GPa。Cu元素的添加使AlTiN涂层刀具切削钛合金寿命提高了约36%。
AlTiN and AlTiCuN coatings were prepared on the surface of cemented carbide cutting tools with cathodic arc ion plating. The surface-interface morphologies, microstructure, mechanical properties of AlTiN and AlTiCuN coatings were tested and analyzed by means of SEM, XRD and nano-indentation tester, respectively. Cutting performance of two kinds of coatings was also studied. The results show that adding Cu changes the grain structure from columnar crystal to equiaxed one, refines the grain sizes of the coating, and changes preferred orientation from(111) plane to(200) plane. Meanwhile, Cu ddition decreases the vickers hardness from 29.01 GPa to 22.04 GPa and the elasticity modulus from 347.10 GPa to 268.25 GPa, but it improves the cutting life of cutting titanium alloy about 36%.
AlTiN and AlTiCuN coatings were prepared on the surface of cemented carbide cutting tools with cathodic arc ion plating. The surface-interface morphologies, microstructure, mechanical properties of AlTiN and AlTiCuN coatings were tested and analyzed by means of SEM, XRD and nano-indentation tester, respectively. Cutting performance of two kinds of coatings was also studied. The results show that adding Cu changes the grain structure from columnar crystal to equiaxed one, refines the grain sizes of the coating, and changes preferred orientation from(111) plane to(200) plane. Meanwhile, Cu ddition decreases the vickers hardness from 29.01 GPa to 22.04 GPa and the elasticity modulus from 347.10 GPa to 268.25 GPa, but it improves the cutting life of cutting titanium alloy about 36%.
引文
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[2]任毅,周家斌,付志强,等.纳米多层超硬膜力学性能研究进展[J].金属热处理,2007,32(5):6-9.REN Yi,ZHOU Jiabin,FU Zhiqiang,et al.Review of mechanical performance of superhard nano-multilayer films[J].Heat Treatment of Metals,2007,32(5):6-9.
[3]WANG X Q,ZHAO Y H,YU B H,et al.Deposition,structure and hardness of Ti-Cu-N hard films prepared by pulse biased arc ion plating[J].Vacuum,2011,86(4):415-421.
[4]徐银超,陈康华,王社权,等.Ti N和Ti Al N涂层硬质合金的氧化和切削性能[J].粉末冶金材料科学与工程,2011,16(3):425-430.XU Yinchao,CHEN Kanghua,WANG Shequan,et al.Oxidation and cutting properties of Ti N and Ti Al N coated cemented carbide[J].Materials Science and Engineering of Powder Metallurgy,2011,16(3):425-430.
[5]陈蓓蓓.(Ti,Al)N薄膜力学性能及微观组织结构的研究[D].上海:上海交通大学,2007:1-61.CHEN Beibei.Study on mechanical properties and microstructure of(Ti,Al)N coatings[D].Shanghai:Shanghai Jiao Tong University,2007:1-61
[6]LEU M S,LO S C,WU J B,et al.Microstructure and physical properties of arc ion plated Ti Al N/Cu thin film[J].Surface and Coatings Technology,2006,201(7):3982-3986.
[7]胡弦.遮挡效应及Si,Cu改性的Ti Al N涂层性能研究[D].南昌:南昌航空大学,2013:1-65.HU Xian.Shield effect and properties investigation of Ti Al N coatings modified by Si and Cu[D].Nanchang:Nanchang Hangkong University,2013:1-65.
[8]FOX-RABINOVICH G S,YANAMOTO K,AGUIRRE M H,et al.Multi-functional nano-multilayered Al Ti N/Cu PVD coating for machining of Inconel 718 superalloy[J].Surface and Coatings Technology,2010,204(15):2465-2471.
[9]龚才.电弧离子镀Ti N薄膜表面液滴及其对薄膜性能的影响研究[D].长沙:中南大学,2013:1-74.GONG Cai.Study of droplets and its effect on performance of Ti N films prepared by arc ion plating[D].Changsha:Central South University,2013:1-74.
[10]ZHANG L,MA G J,LIN G Q,et al.Synthesis of Cu doped Ti N composite films deposited by pulsed bias arc ion plating[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,2014,320:17-21.
[11]唐瞿炜.不同织构刀具表面涂层性能的研究[D].天津:天津大学,2014:1-42.TANG Quwei.Research on properties of different textured cutting tools[D].Tianjin:Tianjin University,2014:1-42
[12]陈利,汪秀全,尹飞,等.Ti N涂层的微观组织结构及力学性能分析[J].硬质合金,2006,23(1):8-10.CHEN Li,WANG Xiuquan,YIN Fei,et al.Research on microstructure and mechanical properties of Ti N coating[J].Cemented Carbide,2006,23(1):8-10.
[13]陈利,吴恩熙,尹飞,等.(Ti,Al)N涂层的微观组织和性能[J].中国有色金属学报,2006,16(2):279-283.CHEN Li,WU Enxi,YIN Fei,et al.Microstructure and properties of(Ti,Al)N coating[J].The Chinese Journal of Nonferrous Metals,2006,16(2):279-283.
[14]MYUNG H S,LEE H M,SHAGINYAN L R,et al.Microstructure and mechanical properties of Cu doped Ti N superhard nanocomposite coatings[J].Surface and Coatings Technology,2003,163:591-596.
[15]ELYUTIN A V,BLINKOV I V,VOLKHONSKY A O,et al.Properties of nanocrystalline arc PVD Ti N-Cu coatings[J].Inorganic Materials,2013,49(11):1106-1112
[16]BELOV D S,BLINKOV I V,VOLKHONSKII A O.The effect of Cu and Ni on the nanostructure and properties of arc-PVD coatings based on titanium nitride[J].Surface and Coatings Technology,2014,260:186-197.