Diffusion AISi-MeCrAlY coatings obtained on intermetallic y-TiAl phase

• Autorzy: Góral M. , Moskal G.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The development of new protective coatings for TiAl intermetallics was conducted. The MeCrAlY-AlSi slurry was used with different amount of aluminium-silicon powder in the binder. Design/methodology/approach: The slurry consisting of aluminium and silicon powder with the addition of MeCrAlY powder were used during the procedure. The inorganic solution made from chromic and phosphoric acid was applied as a binder. The preliminary research of microstructure of obtained coatings was conducted. Findings: The obtained coating consisting of 3 or 4 zones (depending on chemical composition of the slurry) was obtained during the annealing process (950°C/4h). Research limitations/implications: The research results revealed the possibility of obtaining coatings with complex phase and chemical composition. Practical implications: Many problems connected with sedimentation of heavier MeCrAlY powder were observed. Originality/value: The copletele new technologies was described in article.

Słowa kluczowe

EN

metallic alloys; corrosion; technological design; Thin and Thick Coatings; surface treatment

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 685--688
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Góral M.

• Department of Materials Science, Rzeszow University of Technology, Al. Powstanców Warszawy 12, 35-959 Rzeszów, Poland

autor

Moskal G.

• Department of Materials Science, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

• [1] M. Hetmańczyk, L. Swadźba, B. Mendala, Advanced materials and protective coatings in aero-engines application, Journal of Achievements in Materials and Manufacturing Engineering 24/ 1 (2007) 372-381.
• [2] H. Mabuchi, H. Tsuda, T. Kawakami, S. Nakamatsu, T. Matusi, K. Mori, Oxidation resistant coating for gamma titanium aluminides by pack cementation, Scripta Materialia 41/5 (1999) 511-516.
• [3] H.G. Jung, K.Y. Kim, Effect of ternary elements on oxidation behavior of aluminized TiAl alloys, Oxidation of metals 58 (2002) 197-216.
• [4] Ch. Zhou, H. Xu, Sh. Gong, Y. Yang, K. Y. Kim, A study on aluminide and Cr-modified aluminide coatings on TiAl alloys by pack cementation method, Surface and Coatings Technology 132 (2000) 117-123.
• [5] T. Nishimoto, T. Izumi, Sh. Hayashi, T. Narita, Two-step Cr and al diffusion coating on TiAl at high temperatures, Intermetallics 11 (2003) 225-235.
• [6] Z.D. Xiang, S. R. Rose, Oxidation resistance of diffusion coatings formed by pack codeposition of Al and Si on y-TiAl., Journal of Materials Science 39/6 (2004) 2099-2106.
• [7] T. Sasaki, T. Yagi, T. Watanabe, A. Yanagisawa, Aluminizing of TiAl - based alloy using thermal spray coating, Surface and Coatings Technology 205/13 (2011) 3900-3904.
• [8] M.S. Chu, S.K. Wu, The improvement of high temperature oxidation of Ti-50Al by sputtering Al film and subsequent interdiffusion treatment, Acta materialia 51 (2003) 3109-3120.
• [9] X.Y. Li, Y.C. Zhu, K. Fujita, N. Iwamoto, Y. Matsunaga, K. Nakagawa, S. Taniguchi, Influence of Al film deposition and following treatment on the high temperature isothermal oxidation behavior of a gamma-TiAl based alloy, Surface and Coatings Technology 136 (2001) 276-280
• [10] G. Moskal, Effect of TBC on oxidation behaviour of y-TiAl based alloy, Journal of Achievements in Materials and Manufacturing Engineering 22/ 2 (2007) 31-34.
• [11] M. Goral, G. Moskal, L. Swadzba, Gas phase aluminizing of TiAl intermetallics, Journal of Achievements in Materials and Manufacturing Engineering 20/1-2 (2007) 443-446.
• [12] A. Donchev, R. Braun, M. Schutze, Optimizing thermally grown oxide for thermal barrier coatings on TiAl components via fluorine treatment, Journal of Materials 62 (2010) 70-74.
• [13] Y.X. Cheng, W. Wang, S.L. Zhu, L. Xin, F.H. Wang, Arc ion plated Cr2O3 intermediate film as a diffusion barrier between NiCrAlY and y-TiAl, Intermetallics 18 (2010) 736-739.
• [14] M. Frolich, R. Braun, Ch. Leyens, Oxidation resistant coatings in combination with thermal barrier coatings on y-TiAl alloys for high-temperature applications, Surface and Coatings Technology 201 (2006) 3911-3917.
• [15] R. Braun, M. Frohlich, W. Braue, Ch. Leyens, Oxitation behaviour of gamma titanium aluminides with EB-PVD thermal barrier coatings exposed to air at 900°C, Oxidation of Metals 71/5-6 (2009) 295-318.
• [16] R. Braun, F. Rovere, P.H. Mayrhofer, C. Leyens, Environmental protection of y-TiAl based alloy Ti-45Al-8Nb by CrAlYN thin film and thermal barrier coatings, Intermetallics 18 (2010) 479-486.