Hybrid HIPIMS and DC magnetron sputtering deposition of TiN coatings: Deposition rate, structure and tribological properties

被引:73
作者
Luo, Q. [1 ]
Yang, S. [2 ]
Cooke, K. E. [2 ]
机构
[1] Sheffield Hallam Univ, Mat & Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England
[2] Teer Coatings Ltd, Miba Coating Grp, Droitwich WR9 9AS, Worcs, England
关键词
Magnetron sputtering deposition; HIPIMS; TiN; TEM; Friction and wear; PREFERRED ORIENTATION; HARD COATINGS; MULTILAYER COATINGS; THIN-FILMS; MECHANICAL-PROPERTIES; POWER; GROWTH; ENERGY; MICROSTRUCTURE; TEXTURE;
D O I
10.1016/j.surfcoat.2013.07.003
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
High power impulse magnetron sputtering (HIPIMS) has the advantage of ultra-dense plasma deposition environment although the resultant deposition rate is significantly low. By using a closed field unbalanced magnetron sputtering system, a hybrid process consisting of one HIPIMS powered magnetron and three DC magnetrons has been introduced in the reactive sputtering deposition of a TiN hard coating on a hardened steel substrate, to investigate the effect of HIPIMS incorporation on the deposition rate and on the microstructure and mechanical and tribological properties of the deposited coating. Various characterizations and tests have been applied in the study, including XRD, FEG-SEM, cross-sectional TEM, Knoop hardness, adhesion tests and un-lubricated ball-on-disc tribo-tests. The results revealed that, both the DC magnetron and hybrid-sputtered TiN coatings exhibited dense columnar morphology, a single NaCI-type cubic crystalline phase with strong (220) texture, and good adhesion property. The two coatings showed similar dry sliding friction coefficient of 0.8-0.9 and comparable wear coefficient in the range of 1-2 x 10(-15) m(3) N-1 m(-1) The overall deposition rate of the hybrid sputtering, being 0.047 mu m/min as measured in this study, was governed predominantly by the three DC magnetrons whereas the HIPIMS only made a marginal contribution. However, the incorporated HIPIMS has been found to lead to remarkable reduction of the compressive residual stress from -6.0 to -3.5 GPa and a slight increase in the coating hardness from 34.8 to 38.0 GPa. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:13 / 21
页数:9
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