Optimization of HVOF thermal spraying parameters to improve the oxidation resistance of MCrAlY coating using Response

Subject Areas :

mostafa  tahari ¹ (عضو هیئت علمی)

Received: 2017-01-02 Accepted : 2017-12-10 Published : 2017-11-22

Keywords: RSM, HVOF, high temperature oxidation, MCrAlY,

Abstract :

In this research, effects of different coating process parameters on the final properties of thermal spray coatings obtained from HVOF method are investigated. For this aim, five different levels are considered for four effective parameters (Fuel injection rate, oxygen injection rate, powder injection rate and spray distance) on HVOF process by response surface method (RSM) and minimum porosity and minimum oxidation layer thickness are considered as the responses. To investigate the microstructure of coatings, Thermal Grown Oxide (TGO) thickness and porosity, a Scanning Electron Microscopy (SEM) and image analysis method are applied. Oxidation test has done at1100ºC for 50 hours on coated samples. Results show that (oxygen injection rate and powder injection rate), (fuel injection rate and powder injection rate), (powder injection rate and spray distance) have a reaction on each other in the TGO thickness value. Also, (oxygen injection rate and powderinjectionrate), (fuel injection rate and powder injection rate) have a little reaction on the porosity against the other parameters which haven’t any effect on it. Investigation of the coated sample with optimized parameters reveals that porosity of the coating is about 0.5% and TGO thickness is about 5.3 micrometer.

References:

 [1]      س. سلطانی، ر. ابراهیمی کهریزسنگی و ف. نعیمی، "بررسی رفتار سینتیکی اکسیداسیون ایزوترم دمای بالای پوشش‌های MCrAlY اعمال شده به روش HVOF"، فرایندهای نوین در مهندسی مواد، دوره 10، شماره 3، صفحه 67-80، 1395.

 

[2]      س. شریف حسن، ض. والفی، ح. حسینی و ک. جعفرزاده، "اثر فاصله پاشش و نرخ تغذیه پودر در فرآیند HVOF بر رفتار خوردگی داغ پوشش‌هایNiCrAlY"، فرایندهای نوین در مهندسی مواد ، دوره 4، شماره 3، صفحه 33-43، 1389.

 

[3]    S. Baskaran, V. Anandakrishnan & M. Duraiselvam, “Investigations on dry sliding wear behavior of in situ casted AA7075–TiC metal matrix composites by using Taguchi technique”, Mater. Des, Vol. 60, pp. 184-192, 2014.

 

[4]    Design optimization of cutting parameters for turning operations based on the Taguchi method. J. Mater. Process.Technol, Vol. 84, pp. 122-129, 1998.

 

[5]    N. A. Jarrah, “Studying the influence of process parameters on the catalytic carbon nanofibers formation using factorial design”, J. Chem. Eng, Vol. 151, pp. 367–371, 2009.

 

[6]    T. Troczynski & M. Plamondon, “Response Surface Methodology for Optimization of Plasma Spraying”, J. Therm. Spray Technol, Vol. 1, pp. 293–300, 1992.

 

[7]    C. Pierlot, L. Pawlowski, M. Bigan & P. Chagnon, “Design of Experiments in Thermal Spraying: A Review”, Surf. Coat. Technol, Vol. 202, pp. 4483–4490, 2008.

 

[8]    S. Praveen, J. Sarangan & S. Suresh, “Optimization and erosion wear response of NiCrSiB/WC–Co HVOF coating using Taguchi method”, Ceramics International, Vol. 42, pp. 1094-1104, 2016.

 

[9]    K. Murugan, A. Ragupathy, V. Balasubramanian & K. Sridhar, “Optimizing HVOF spray process parameters to attain minimum porosity and maximum hardness in WC–10Co–4Cr coatings”,Surf. Coat. Technol, Vol. 247, pp. 90-102, 2014.

 

[10] W. Fang, T. Y. Cho, J. H. Yoon, K. O. Song, S. K. Hur, S. J. Youn & H. G. Chun,“Processing optimization, surface properties and wear behavior of HVOF spraying WC–CrC–Ni coating”, J. Mater. Proces. Technol, Vol. 209, pp. 3561-3567, 2009.

 

[11] S. Hong, Y. Wu, B. Wang, Y. Zheng, W. Gao & G. Li, “High-velocity oxygen-fuel spray parameter optimization of nanostructured WC–10Co–4Cr coatings and sliding wear behavior of the optimized coating”, Mater. Des, Vol. 55, pp. 286–291, 2014.

 

[12] U. Wei-Cheng Lih, S. H. Yang, C. Y. Su, S. C. Huang, I. C. Hsu & M. S. Leu, “Effects of process parameters on molten particle speed and surface temperature and the properties of HVOF CrC/NiCr coatings”, Surf. Coat. Technol, Vol. 133, pp. 54–60, 2000.

 

[13] H. Xu, Y. Bao, D. T. Gawne & T. Zhang, “Process control for thermal-spray deposition of thermoset coatings using computer simulation”, Progress. Organic Coatings, Vol. 101, pp. 407-415, 2016.

 

[14] C. M. Lin, S. H. Yen & C. Y. Su, “Measurement and optimization of atmosphericplasmasprayed CoMoCrSi coatings parameters on Ti-6Al-4V substrates affecting microstructural and properties using hybrid abductor induction mechanism”, measurement, Vol. 94, pp. 157-167, 2016.

 

[15] G. Ramakrishnan, G. Dwivedi, S. Sampath, A. Oraly, “Development and optimization of the real sprayed ceramic micro filtration membranes”, Journal of Membrane Science, Vol. 489, pp. 106-111, 2015.

 

[16] G. E. P. Box & J. S. Hunter, “Multi-Factor Experimental Designs for Exploring Response Surfaces”, Ann. Math. Stat, Vol. 28, pp. 195–241, 1957.

 

[17] G. E. P. Box & K. B. Wilson, “On the Experimental Attainment of Optimum Conditions”, J. Roy. Stat. Soc, Vol. 13, pp. 1–45, 1951.

 

[18] A. I. Khuri, J. A. Cornell & M. Dekker, Response Surfaces, 2nd edition, MarcelDekker New York, 1996.

 

[19] W. Kurz & D. J. Fischer, Fundamentals of Solidification, Trans Tech Publications, Aedermannsdorf, 1992.

 

[20] E. Harrington, “The desirability function. Industrial Quality Control”, Vol. 21, pp. 494–498, 1965.

 

[21] S. Shabana, M. Sarcar, K. Suman & S. Kamaluddind, “Tribological and Corrosion behavior of HVOF Sprayed WC-Co, NiCrBSi and Cr3C2-NiCr Coatings and analysis using Design of Experiments”, Materials Today: Proceedings, Vol. 2, pp. 2654–2665, 2015.