Journal of Central South University

, Volume 18, Issue 2, pp 310–313 | Cite as

Effect of Al and Si additions on microstructure and mechanical properties of TiN coatings

  • She-quan Wang (王社权)
  • Kang-hua Chen (陈康华)Email author
  • Li Chen (陈利)
  • Chang-jun Zhu (祝昌军)
  • Ping Li (李屏)
  • Yong Du (杜勇)


Ti-X-N (X=Al, Si or Al+Si) coatings were grown onto cemented carbide substrates by cathodic arc evaporation. The hardness of the coatings was obtained by nanoindentation and the microstructure was investigated by XRD, XPS and SEM. Solid solution hardening results in a hardness increase from 24 GPa for TiN to 31.2 GPa for TiAlN. The higher hardness values of 36.7 GPa for TiSiN and 42.4 GPa for TiAlSiN are obtained by the incorporation of Si into TiN (TiAlN) coatings due to the formation of special three-dimensional net structure consisting of nanocrystalline (nc) TiN (TiAlN) encapsulated in an amorphous (a) Si3N4 matrix phase. Furthermore, the nc-TiAlN/a-Si3N4 coating shows the best machining performance.

Key words

TiN coating alloying element hardness cutting test 


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  1. [1]
    SUNDGREN J E. Structure and properties of TiN coatings [J]. Thin Solid Films, 1985, 128: 21–44.CrossRefGoogle Scholar
  2. [2]
    MILOSEV I, STREHBLOW H H, NAVINSEK B. XPS in the study of high-temperature oxidation of CrN and TiN hard coatings [J]. Surface and Coatings Technology, 1995, 74/75: 897–902.CrossRefGoogle Scholar
  3. [3]
    POLAKOVA H, MUSIL J, VICEK J, ALLAART J, MITTERER C. Structure-hardness relations in sputtered Ti-Al-V-N films [J]. Thin Solid Films, 2003, 444: 189–198.CrossRefGoogle Scholar
  4. [4]
    CHEN L, DU Y, WANG S Q, LI J. A comparative research on physical and mechanical properties of (Ti, Al)N and (Cr, Al)N PVD coatings with high Al content [J]. International Journal of Refractory Metals and Hard Materials, 2007, 25: 400–404.CrossRefGoogle Scholar
  5. [5]
    VEPREK S, ARGON A S. Towards the understanding of mechanical properties of super- and ultrahard nanocomposites [J]. Journal of Vacuum Science & Technology B, 2002, 20: 650–664.CrossRefGoogle Scholar
  6. [6]
    VEPREK S, REIPRICH S, LI S Z. Superhard nanocrystalline composite materials: The TiN/Si3N4 system [J]. Applied Physics Letters, 1995, 66: 2640–2642.CrossRefGoogle Scholar
  7. [7]
    VEPREK S, VEPREK-HEIJMAN G J M G J, KARVANKOVA P, PROCHAZKA J. Different approaches to superhard coatings and nanocomposites [J]. Thin Solid Films, 2005, 476: 1–29.CrossRefGoogle Scholar
  8. [8]
    VEPREK S, PEIPRICH S. A concept for the design of novel superhard coatings [J]. Thin Solid Films, 1995, 268: 64–71.CrossRefGoogle Scholar
  9. [9]
    MÖNNLING H D, PATIL D S, MOTO K, JILEK M, VPREK S. Thermal stability of superhard nanocomposite coatings consisting of immiscible nitrides [J]. Surface and Coatings Technology, 2001, 146/147: 263–267.CrossRefGoogle Scholar
  10. [10]
    VEPREK S. The search for novel, superhard materials [J]. Journal of Vacuum Science & Technology A, 1999, 17: 2401–2420.CrossRefGoogle Scholar
  11. [11]
    ZHANG R F, VEPREK S. Phase stabilities of self-organized nc-TiN/a-Si3N4 nanocomposites and of Ti1−xSixNy solid solutions studied by ab initio calculation and thermodynamic modeling [J]. Thin Solid Films, 2008, 516: 2264–2275.CrossRefGoogle Scholar
  12. [12]
    MAYRHOFER P H, TISCHLER G, MITTER C. Microstructure and mechanical/thermal properties of Cr-N coatings deposited by reactive unbalanced magnetron sputtering [J]. Surface and Coatings Technology, 2001, 142/143/144: 78–84.CrossRefGoogle Scholar
  13. [13]
    OLIVER W C, PHARR G M. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments [J]. J Mater Res, 1992, 7: 1564–1583.CrossRefGoogle Scholar
  14. [14]
    ZHANG R F, VEPREK S. On the spinodal nature of the phase segregation and formation of stable nanostructure in the Ti-Si-N system [J]. Materials Science and Engineering: A, 2006, 424: 128–137.CrossRefGoogle Scholar

Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • She-quan Wang (王社权)
    • 1
    • 2
  • Kang-hua Chen (陈康华)
    • 1
    Email author
  • Li Chen (陈利)
    • 2
  • Chang-jun Zhu (祝昌军)
    • 1
  • Ping Li (李屏)
    • 2
  • Yong Du (杜勇)
    • 1
  1. 1.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaChina
  2. 2.Zhuzhou Cemented Carbide Cutting Tools Co., LtdZhuzhouChina

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