Effect of diffusion on platinum coatings deposited on the surface of nickel based superalloy by the electroplating process

• Autorzy: Yavorska, M. , Sieniawski, J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this paper the effect of diffusion on platinum coatings deposited on the surface of nickel based superalloy was evaluated. Design/methodology/approach: The platinum coatings with thickness of 3 mm and 7 mm were deposited by electroplating process on Inconel 713 LC Ni-base superalloy. The heat treatment of electroplating coatings at the temperature 1050 °C during 2h under argon atmosphere was performed. The microstructure investigations of the heat treated coatings were conducted by the use of optical microscope (Nikon Epiphot 300) and a scanning electron microscope (Hitachi S-3400N) equipped with an X-radiation detector EDS (VOYAGER of NORAN INSTRUMENTS). The phase composition was identified by X-ray (ARL X'TRAX) diffractometer. The surface roughness parameter - Ra was evaluated by Perthometer S2 MAHR equipment. Findings: The microstructure of platinum electroplating coating with thickness of 3 Μm after diffusion treatment consists of two phases: γ-Ni and (Al0.25Pt0.75)Ni3. The increase of platinum thickness from 3 Μm to 7 Μm does not influence the phase composition of heat treated coatings. Heat treatment of platinum electroplating coatings causes the increase of surface roughness parameter as a result of unequal mass flow of platinum and nickel. Research limitations/implications: The results will be used in the future investigations to explain the mechanism of reaction of platinum as a modifier in aluminide coatings. Practical implications: The platinum electroplating coatings after diffusion treatment and aluminizing process are widely used as coatings for turbine blades of aircraft engines. Originality/value: The paper includes the results of microstructure and surface roughness investigations of platinum electroplating coatings with 3 mm and 7 Μm thickness after diffusion treatment.

Słowa kluczowe

PL

dyfuzja; platyna; galwanizacja

EN

diffusion; platinum; galvanization

• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2010
• Tom: Vol. 45, nr 1
• Strony: 56-60
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Yavorska, M.

autor

Sieniawski, J.

• R&D Laboratory for Aerospace Materials, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszów, Poland,

Bibliografia

• [1]J. Sieniawski, Nickel and titanium alloys in aircraft turbine engines, Advances in Manufacturing Science and Technology 27/3 (2003) 23-34.
• [2]A. Hernas, High temperature creep resistance of steel and alloys, Silesian University of Technology Press, Gliwice, 2000.
• [3]M. Zielińska, J. Sieniawski, M. Poręba Microstructure and mechanical properties of high temperature creep resisting superalloy René 77 modified CoAl2O4, Archives of Materials Science and Engineering 28/10 (2007) 629-632.
• [4]M. Hetmańczyk, L. Swadźba, B. Mendala, Advanced materials and protective coating in aero-engines application, Journal of Achievements In Materials and Manufacturing Engineering 24/1 (2007) 372-381.
• [5]H. Tawancy, N.Sridhar, B. Tawabini, N. Abbas, Thermal stability of a platinum aluminide coating on nickel-base superalloys, Journal of Materials Science 27 (1992) 6463-6474.
• [6]P. Hou, V. Tolpygo, Examination of the platinum effect on the oxidation behavior of nickel-aluminide coatings, Surface & Coatings Technology 202 (2007) 623-627.
• [7]J. Benoist, K. Badawi, A. Malié, C. Ramade, Microstructure of Pt-modified aluminide coationgs on Ni-based superalloys, Surface & Coatings Technology 182 (2004) 14-23.
• [8]B. Warnes, Improved Pt aluminide coatings using CVD and novel platinum electroplating, Internal Gas Turbine and Aeroengine and Exhibition, The American Society of Mechanical Engineers, Stockholm, 1998.
• [9]N. Vialas, D. Monceau, Effect of Pt and Al content on the long-term, high temperature oxidation behavior and interdiffusion of a Pt-modified aluminide coating deposited on Ni-base superalloys, Surface & Coatings Technology 201 (2006) 3846-3851.
• [10]Y. Niu, W. Wu, D. Boone, J. Smith, J. Zhang and C. Zhen, Oxidation behavior of simple and Pt-modified aluminide coatings on IN738 at 1100°C, Journal de Physique IV 3 (1993) 511-519.
• [11]J. Benoist, T. Girardeau, P. Goudeau, K. Badawi, A. Traverse, Study bt complementary X-ray techniques of in-depth microstructure in Ni-based superalloys after Pt diffusion treatment, Surface & Coatings Technology 161 (2002) 200-209.
• [12]R. Streiff, O. Cerclier, D. Boone, Structure and hot corrosion behavior of platinum-modified aluminide coatings, Surface & Coatings Technology 32 (1987) 111-126.
• [13]J. Haynes1, K. More, B. Pint, I. Wright, K. Cooley1, Y. Zhang, Effects of Platinum Additions on the Adherence of Alumina Scales to CVD Aluminide Bond Coatings, High Temperature Corrosion and Protection of Materials 5 (2000).
• [14]F. Pedraza, A. Kennedy, J. Kopecek, P. Moretto, Investigation of the microstructure of platinum-modified aluminide coatings, Surface & Coatings Technology 200 (2006) 4032-4039.
• [15]S. Hong, G. Hwang, W. Han, S. Kang, The effect of Pt contents on the surface morphologies of Pt-modified aluminide coating, Surface & Coatings Technology 203 (2009) 3066-3071.