STUDY OF THE EFFECT OF COATING POWDERS (WC:12CO, WC:10 CO-4-CR , CRC2-25-NICR) ON THE SURFACE ROUGHNESS
Keywords:
Detonation gun spray coating, Process Parameter Optimization, Taguchi method, greater hardness , ANOVAAbstract
When machines with higher performance efficiency are in great demands today, producers aim to provide a perfect finish for their products. This might aim to optimize several properties of the machine or component for specific purposes. Roughness plays an important role in determining how a real object will interact with its environment. Rough surfaces usually wear more quickly and have higher friction coefficients than smooth ones. Certain components need to be perfectly smoothened where as some requires a particular level of uniform roughness .Usually roughness value is evaluated mainly for coated specimen. In this experiment also, we have optimized certain parameters using Taguchi to attain a surface with adequate roughness.
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References
Saravanan P, Selvarajan V, Srivastava M P, Rao D S, Joshi S V and Sundararajan G (2000), “Study of plasma- and detonation gun-sprayed alumina coatings using taguchi experimental design”, Journal of Thermal Spray Technology, Vol. 9(4), 181–194.
Lee C W, Han H, Yoon J, Shin M C and Kwun S I (2010), “A study of powder mixing for high fracture toughness and wear resistance of WC-Co-Cr coatings sprayed by HVOF”, Surface and Coatings Technology, Vol. 204(14), 2223–2229.
Fang W, Cho T Y, Yoon J H, Song K O, Hur S K, Youn S J and Chun H G (2009), “Processing Optimization, Surface properties and wear behavior of HVOF spraying WC-CrC-Ni coating”, Journal of material processing tech., Vol. 209(7), 3561-3567.
La Barbera-Sosa J G, Santana Y Y, Moreno E, Cuadrado N, Caro J, Renault P O, Bourhis E Le, Staia M H and Puchi-Cabrera E S (2010), “Effect of spraying distance on the microstructure and mechanical properties of a colmonoy 88 alloy deposited by HVOF thermal spraying”, Surface and Coatings Technology, Vol. 205(7), 1799–1806.
Rchter P W, Benson J M, Young P M and H L de Villiers Lovelock (1998), “Parameter study of HP/HVOF Deposited WC-Co Coatings”, Journal of Thermal Spray Technology, Vol. 7(1), 97–107.
Murthy J K N and Venkatraman B (2006), “Abrasive wear behaviour of WC–CoCr and Cr3C2–20(NiCr) deposited by HVOF and detonation spray processes”, Surface and Coatings Technology, Vol. 200(8), 2642–2652.
Tillmann W, Vogli E, Baumann I, Kopp G and Weihs C (2012), “Desirability – Based Multi-Criteria optimization of HVOF spray Experiments to Manufacture Fine structured Wear-Resistant 75Cr3C2-35(NiCr20) Coatings”, Journal of Thermal Spray Technology, Vol. 19(1-2), 2642–2652.
Saravanan P, Selvarajan V, Rao D S, Joshi S V and Sundararajan G (2000), “Influence of process variables on the quality of detonation gun sprayed alumina coatings” Surface and Coatings Technology, Vol. 123(1), 44–54.
