IJAT Vol.11 No.2 pp. 258-269
doi: 10.20965/ijat.2017.p0258


Laser-Assisted Milling of Zirconia with Systematically Determined Machining Conditions

Toru Kizaki, Yusuke Ito, Naohiko Sugita, and Mamoru Mitsuishi

Department of Mechanical Engineering, School of Engineering, The University of Tokyo
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

Corresponding author

September 6, 2016
November 8, 2016
March 1, 2017
laser-assisted machining, Y-TZP finite element method, genetic algorithm, machinability

Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is a promising material for dental restoratives. Although grinding or polishing with diamond tools is widely used to machine Y-TZP, the processing efficiency and cost of the process are problematic. In this study, we applied laser-assisted machining (LAM) to Y-TZP, in which non-diamond tools were used. Unlike LAM applied to other materials, decrease of the fracture toughness at elevated temperatures which is a unique feature of the Y-TZP was adopted as a key mechanism for machinability enhancement. In addition, a systematic method to determine the LAM conditions was proposed. In this study, we explain the LAM condition-determining method, which is based on numerical simulations of the temperature distribution. Secondly, the determining method was evaluated through a series of LAM experiments to obtain the appropriate LAM conditions. Using the determined conditions, LAM of Y-TZP was demonstrated to be effective; the thrust force was reduced by 51.3% and the tool wear was significantly reduced, while no cracks formed on the Y-TZP.

Cite this article as:
T. Kizaki, Y. Ito, N. Sugita, and M. Mitsuishi, “Laser-Assisted Milling of Zirconia with Systematically Determined Machining Conditions,” Int. J. Automation Technol., Vol.11, No.2, pp. 258-269, 2017.
Data files:
  1. [1] I. Denry and J. R. Kelly, “State of the art of zirconia for dental applications,” Dent. Mater., Vol.24, pp. 299-307, 2008.
  2. [2] H. Suzuki, M. Okada, K. Okada, and Y. Ito, “Precision cutting of ceramics with milling tool of single crystalline diamond,” Int. J. of Automation Technology, Vol.9, No.1, 2015.
  3. [3] T. K. Gupta, J. H. Bechtold, R. C. Kuznicki, L. H. Cadoff, and B. R. Rossing, “Stabilization of tetragonal phase in polycrystalline zirconia,” J. Mater. Sci., Vol.12, No.12, pp. 2421-2426, 1977.
  4. [4] B. Basu, “Toughening of yttria-stabilised tetragonal zirconia ceramics,” Int. Mater. Rev., Vol.50, No.4, pp. 239-256, 2005.
  5. [5] R. Garvie, R. Hannink, and R. Pascoe, “Ceramic steel?,” Nature, Vol.258, pp. 703-704, 1975.
  6. [6] G. S. A. M. Theunissen, J. S. Bouma, A. J. A. Winnubst, and A. J. Burggraaf, “Mechanical properties of ultra-fine grained zirconia ceramics,” J. Mater. Sci., Vol.27, pp. 4429-4438, 1992.
  7. [7] T. Kizaki, T. Ogasahara, N. Sugita, and M. Mitsuishi, “Ultraviolet-laser-assisted precision cutting of yttria-stabilized tetragonal zirconia polycrystal,” J. Mater. Process. Technol., Vol.214, No.2, pp. 267-275, Feb. 2014.
  8. [8] H. Tsubakino, K. Sonoda, and R. Nozato, “Martensite transformation behaviour during isothermal ageing in partially stabilized zirconia with and without alumina addition,” J. Mater. Sci. Lett., Vol.12, pp. 196-198, 1993.
  9. [9] T. Kizaki, Y. Ito, N. Sugita, and M. Mitsuishi, “Development of Laser-Assisted Machining of Yttria-Stabilized Tetragonal Zirconia Polycrystal,” Trans. of Japan Soc. of Mech. Eng. Series C, Vol.79, No.808, pp. 4582-4592, 2013 (in Japanese).
  10. [10] T. Kizaki, N. Sugita, and M. Mitsuishi, “Experimental analysis of the machinability in the thermally assisted milling process of zirconia ceramics,” Prec. Eng., Vol.45, pp. 176-186, 2015.
  11. [11] J. C. Rozzi, F. E. Pfefferkorn, Y. C. Shin, and F. P. Incropera, “Experimental Evaluation of the Laser Assisted Machining of Silicon Nitride Ceramics,” Trans. ASME, Vol. 122, pp. 666-670, 2000.
  12. [12] F. E. Pfefferkorn, Y. C. Shin, Y. G. Tian, and F. P. Incropera, “Laser-assisted machining of magnesia-partially-stabilized zirconia,” J. Manuf. Sci. Eng. Asme, Vol.126, No.1, pp. 42-51, 2004.
  13. [13] G. Germain, J. L. Lebrun, T. Braham-Bouchnak, D. Bellett, and S. Auger, “Laser-assisted machining of Inconel 718 with carbide and ceramic inserts,” Int. J. Mater. Form., Vol.1, No.S1, pp. 523-526, Apr. 2008.
  14. [14] M. C. Anderson and Y. C. Shin, “Laser-assisted machining of an austenitic stainless steel: P550,” Proc. Inst. Mech. Eng. Part B-J. Eng. Manuf., Vol.220, No.12, pp. 2055-2067, 2006.
  15. [15] P. Dumitrescu, P. Koshy, J. Stenekes, and M. A. Elbestawi, “High-power diode laser assisted hard turning of AISI D2 tool steel,” Int. J. Mach. Tools Manuf., Vol.46, pp. 2009-2016, 2006.
  16. [16] C.-W. Chang and C.-P. Kuo, “An investigation of laser-assisted machining of Al2O3 ceramics planing,” Int. J. Mach. Tools Manuf., Vol.47, pp. 452-461, 2007.
  17. [17] C. R. Dandekar, Y. C. Shin, and J. Barnes, “Machinability improvement of titanium alloy (Ti–6Al–4V) via LAM and hybrid machining,” Int. J. Mach. Tools Manuf., Vol.50, No.2, pp. 174-182, Feb. 2010.
  18. [18] S. H. Masood, K. Armitage, and M. Brandt, “An experimental study of laser-assisted machining of hard-to-wear white cast iron,” Int. J. Mach. Tools Manufacutre, Vol.51, pp. 450-456, 2011.
  19. [19] D. Kim and C. Lee, “Development of a one-axis manipulator for laser-assisted machining,” J. Cent. South Univ., Vol.20, No.2, pp. 378-384, Feb. 2013.
  20. [20] D. W. Kang and C. M. Lee, “A study on the development of the laser-assisted milling process and a related constitutive equation for silicon nitride,” CIRP Ann. – Manuf. Technol., Vol.63, No.1, pp. 109-112, 2014.
  21. [21] D.-H. Kim and C.-M. Lee, “A study of cutting force and preheating-temperature prediction for laser-assisted milling of Inconel 718 and AISI 1045 steel,” Int. J. Heat Mass Transf., Vol.71, pp. 264-274, Apr. 2014.
  22. [22] “Substance&Technologies.” [Online]. Available: [Accessed February 22, 2015].
  23. [23] Z. B. Hou and R. Komanduri, “General solutions for stationary/moving plane heat source problems in manufacturing and tribology,” Int. J. Heat Mass Transf., Vol.43, pp. 1679-1689, 2000.

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