High Temperature Cyclic Oxidation Behavior of Ni and Co Based Superalloys
Affiliation(s)
Department of Metallurgical & Materials Engineering, Indian Institute of Technology,Roorkee 247667, India.
Department of Metallurgical & Materials Engineering, Indian Institute of Technology,Roorkee 247667, India.
ABSTRACT
High temperature oxidation causes degradation of materials in aircraft, marine, industrial and land base gas turbines. To obviate this problem, oxidation behavior of Ni and Co based superalloys viz superni 600 and superco 605 (Midhani grade) has been studied in air at 900oC. Both superalloys go through cyclic oxidation which consists of 1 hr heating in silicon carbide tube furnace followed by 20 min cooling in ambient air. Weight change was taken by a digital electronic weighing balance having accuracy of 1 mg after each cycle. Exposed alloys were characterized by XRD, FESEM and EDS. Result shows that the Co base superalloy superco 605 shows less weight gain as compare to superni 600. The oxide layer mainly contains oxides of Cr2O3, NiO and spinel NiCr2O4.
High temperature oxidation causes degradation of materials in aircraft, marine, industrial and land base gas turbines. To obviate this problem, oxidation behavior of Ni and Co based superalloys viz superni 600 and superco 605 (Midhani grade) has been studied in air at 900oC. Both superalloys go through cyclic oxidation which consists of 1 hr heating in silicon carbide tube furnace followed by 20 min cooling in ambient air. Weight change was taken by a digital electronic weighing balance having accuracy of 1 mg after each cycle. Exposed alloys were characterized by XRD, FESEM and EDS. Result shows that the Co base superalloy superco 605 shows less weight gain as compare to superni 600. The oxide layer mainly contains oxides of Cr2O3, NiO and spinel NiCr2O4.
Cite this paper
D. Mudgal, S. Singh and S. Prakash, "High Temperature Cyclic Oxidation Behavior of Ni and Co Based Superalloys," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 3, 2012, pp. 211-219. doi: 10.4236/jmmce.2012.113017.
D. Mudgal, S. Singh and S. Prakash, "High Temperature Cyclic Oxidation Behavior of Ni and Co Based Superalloys," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 3, 2012, pp. 211-219. doi: 10.4236/jmmce.2012.113017.
References
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[1] Pettit F S and Meier G H, (1985), Oxidation and hot corrosion of Superalloys, Superalloys 85, Eds. Gell M,Kartovich C S, Bricknel R H, Kent WB and Radovich J F, Met. Soc. Of AIME, Warrendale, Pensylvania, 651. [2] G.H. Meier, Materials sciences and engineering. A120 (1989) p 1-11 [3] Chen, H.C., Liu, Z.Y. and Chuang, Y.C., (1993),” Degradation of plasma sprayed alumina and zirconia coatings on stainless steel during thermal cycling and hot corrosion,” Thin solid films, Vol.223, No. 1, p 56-64. [4] D.W. MacLachlan and D.M. Knowles, (2001), “Modeling and prediction of the stress rupture behaviour of single crystal superalloys”, Mater. Sci. Eng., Materials Science and Engineering, Volume 302, Issue 2, p 275-285 [5] Chao-Nan Weia, Hui-Yun Borb and Li Changa,(2011) “The influence of carbon addition on carbide characteristics and mechanical properties of CM-681LC superalloy using finegrain process”, Journal of Alloys and Compounds, Volume 509, Issue 18, p 5708-5714. [6] C.T. Liu, J. Ma and X.F. Sun, (2010), “Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 °C in air”. Journal of Alloys and Compounds, Volume 491, Issues 1-2, p 522-526. [7] J.H. Suwardie, R. Artiaga and J.L. Mier, (2002), “Thermal characterization of a Ni-based superalloy”, Thermochimica Acta, Volumes 392-393, Pages 295-298. [8] L. Felberbaum, K. Voisey, M. G?umann, B. Viguier and A. Mortensen, (2001), Mater. Sci. Eng. A 299 p. 152. [9] H. Guo, S. Gong, K.A. Khor and H. Xu, (2003) “Effect of thermal exposure on the microstructure and properties of EB-PVD gradient thermal barrier coatings”, Surface and Coatings Technology Volume 168, Issue 1, p 23-29 [10] K. Shirvani, M. Saremi, A. Nishikata and T. Tsuru, (2003) “Electrochemical study on hot corrosion of Si-modified aluminide coated In-738LC in Na2SO4-20 wt.% NaCl melt at 750 °C”, Corros. Sci. Corrosion Science, Volume 45, Issue 5, p 1011-1021 [11] Subhash kamal, R. Jayaghanthan, and S. Prakash, (2010) “High temperature cyclic oxidation and hot corrosion behaviours of superalloys at 900C”, Bull. Mater. Sci., Vol 33, No. 3, p 299-306. [12] R.A. Mahesh, R. Jayaganthan and S. Prakash, (2008)“Oxidation behavior of selected Niand Fe- base Superalloys in air at 900 C under cyclic condition” , Trans. Indian Inxst. Met., Vol61, No1, p 45-49 [13] C.T. Liua, J. Mab and X.F., (2009) “Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 °C in air”, Sunc. [14] P.S. Liu and K.M. Liang, (2000) “High –Temperature oxidation behavior of the Co-base superalloys DZ40M in air Oxiadtion of Metals”, Vol. 53, Nos3/4, [15] Harpreet Singh, Puri D and Prakash S,(2005) “Studies of plasma spray coatings on a Febase superalloy, their structure and high temperature oxidation behavior”, Anti corrosion Methods and Materials, Vol. 52 Iss: 2, p 84 - 95. [16] F.A. Khalid, N Hussain and K.A.Shah,(1997) “Microstructural characteristics of high temperature oxidation in Ni-based superalloy”,Journal of Materials Engineering and Performance, Vol. 6, Nos. 2, p 219-222