An investigation into the effect of substrate on the load-bearing capacity of thin hard coatings

被引:22
作者
Wang, Chuan Ting [1 ,2 ,3 ]
Hakala, Timo J. [4 ]
Laukkanen, Anssi [4 ]
Ronkainen, Helena [4 ]
Holmberg, Kenneth [4 ]
Gao, Nong [5 ]
Wood, Robert J. K. [5 ]
Langdon, Terence G. [2 ,3 ,5 ]
机构
[1] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Jiangsu, Peoples R China
[2] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[3] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
[4] VTT Tech Res Ctr Finland, Metallimiehenkuja 8,POB 1000, Espoo 02044, Finland
[5] Univ Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England
基金
英国工程与自然科学研究理事会; 美国国家科学基金会;
关键词
HIGH-PRESSURE TORSION; TRIBOLOGICAL CONTACT ANALYSIS; ULTRAFINE-GRAINED TITANIUM; COATED SURFACE; TIN COATINGS; MECHANICAL-PROPERTIES; SCRATCH ADHESION; STEEL; REFINEMENT; STRESSES;
D O I
10.1007/s10853-016-9751-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
TiN and diamond-like carbon (DLC) coatings were deposited on Ti substrates with and without processing by high-pressure torsion (HPT). The HPT processing refined the grain size of titanium from the coarse-grained (CG) size of similar to 8.6 A mu m to the ultra-fine grained (UFG) size of similar to 130 nm and increased the hardness from similar to 1.83 to similar to 3.05 GPa. Scratch test results revealed that all the thin hard coatings had a higher critical load when deposited on the harder UFG Ti substrate compared to those deposited on the softer CG Ti. A three-dimensional finite element model (3D FEM) revealed that the improved load-carrying property of the thin hard coatings on the harder titanium substrates was related to the higher stresses generated within the substrate and its deformation behaviour which reduced the strain at the coating/substrate interface. A model based on the hardness of a two-layered composite was used to explain this effect, and it is shown that the model is reasonably successful in predicting the critical load of a wide range of coating-substrate systems. The analytical model and the results of the 3D FEM modelling emphasize the contribution of the substrate to the load-bearing capacity of thin coatings.
引用
收藏
页码:4390 / 4398
页数:9
相关论文
共 30 条
  • [1] THE MECHANICAL-PROPERTIES OF WEAR-RESISTANT COATINGS .1. MODELING OF HARDNESS BEHAVIOR
    BURNETT, PJ
    RICKERBY, DS
    [J]. THIN SOLID FILMS, 1987, 148 (01) : 41 - 50
  • [2] Extreme grain refinement by severe plastic deformation: A wealth of challenging science
    Estrin, Y.
    Vinogradov, A.
    [J]. ACTA MATERIALIA, 2013, 61 (03) : 782 - 817
  • [3] Using finite element modeling to examine the temperature distribution in quasi-constrained high-pressure torsion
    Figueiredo, Roberto B.
    Pereira, Pedro Henrique R.
    Aguilar, Maria Teresa P.
    Cetlin, Paulo R.
    Langdon, Terence G.
    [J]. ACTA MATERIALIA, 2012, 60 (6-7) : 3190 - 3198
  • [4] The effect of the substrate on the mechanical properties of TiN coatings
    Hainsworth, SV
    Soh, WC
    [J]. SURFACE & COATINGS TECHNOLOGY, 2003, 163 : 515 - 520
  • [5] Tribological contact analysis of a rigid ball sliding on a hard coated surface Part I: Modelling stresses and strains
    Holmberg, K
    Laukkanen, A
    Ronkainen, H
    Wallin, K
    Varjus, S
    Koskinen, J
    [J]. SURFACE & COATINGS TECHNOLOGY, 2006, 200 (12-13) : 3793 - 3809
  • [6] Tribological contact analysis of a rigid ball sliding on a hard coated surface Part II: Material deformations, influence of coating thickness and Young's modulus
    Holmberg, K
    Laukkanen, A
    Ronkainen, H
    Wallin, K
    Varjus, S
    Koskinen, J
    [J]. SURFACE & COATINGS TECHNOLOGY, 2006, 200 (12-13) : 3810 - 3823
  • [7] Holmberg K., 2009, Coatings Tribology
  • [8] Wear resistance optimisation of composite coatings by computational microstructural modelling
    Holmberg, Kenneth
    Laukkanen, Anssi
    Turunen, Erja
    Laitinen, Tarja
    [J]. SURFACE & COATINGS TECHNOLOGY, 2014, 247 : 1 - 13
  • [9] Surface stresses in coated steel surfaces-influence of a bond layer on surface fracture
    Holmberg, Kenneth
    Laukkanen, Anssi
    Ronkainen, Helena
    Wallin, Kim
    [J]. TRIBOLOGY INTERNATIONAL, 2009, 42 (01) : 137 - 148
  • [10] The correlation of scratch adhesion with composite hardness for TiN coatings
    Ichimura, H
    Rodrigo, A
    [J]. SURFACE & COATINGS TECHNOLOGY, 2000, 126 (2-3) : 152 - 158