Ni 기지 초내열합금의 고온산화 저항성에 미치는 Ti의 영향
Effects of Ti on High Temperature Oxidation of Ni-Based Superalloys
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The effects of Ti on the high temperature oxidation of Ni-based superalloys were investigated by cyclicoxidation at 850 °C and 1000 °C. The oxide scale formed at 850 °C consists of Cr2O3, Al2O3, and NiCr2O4layers, while a continuous Al2O3 layer was formed at 1000 °C. The oxidation rate of the alloy with higherTi content was higher than the alloy with less Ti content at 850 °C, possibly due to the increase in themetal vacancy concentration in the Cr2O3 layer involved by incorporation of Ti4+. However, Ti improvedthe oxidation resistance of the superalloy at 1000 °C by reducing oxygen vacancy concentration in Al2O3layer.
Abstract
The effects of Ti on the high temperature oxidation of Ni-based superalloys were investigated by cyclicoxidation at 850 °C and 1000 °C. The oxide scale formed at 850 °C consists of Cr2O3, Al2O3, and NiCr2O4layers, while a continuous Al2O3 layer was formed at 1000 °C. The oxidation rate of the alloy with higherTi content was higher than the alloy with less Ti content at 850 °C, possibly due to the increase in themetal vacancy concentration in the Cr2O3 layer involved by incorporation of Ti4+. However, Ti improvedthe oxidation resistance of the superalloy at 1000 °C by reducing oxygen vacancy concentration in Al2O3layer.
참고문헌 (32)
- Z. Dong, , Corros. Sci, 62, pp.147~ (2012)
- D. J. Young, , Corros. Sci, 53, pp.2131~ (2011)
- Z. Yang, , J. Power Sources, 160, pp.1104~ (2006)
- M. P. Taylor, "Microscopy of oxidation 8", pp.240~ (2011), Science Reviews 2000 Ltd
- J. Chen, , Oxid. Met, 47, pp.381~ (1997)
- F. A. Khalid, , Oxid. Met, 54, pp.63~ (2000)
- D. Kim, , Oxid. Met, 71, pp.271~ (2009)
- A. Encinas-Oropesa, , High Temp, 26, pp.241~ (2009)
- M. P. Taylor, , High Temp, 29, pp.145~ (2012)
- K. Y. Kim, , J. Corros. Sci. Soc. of Kor, 27, pp.289~ (1998)
- C. T. Sims, "Superalloys" (1972), Wiley
- G. R. Wallwork, , Rep. Prog. Phys, 39, pp.401~ (1976)
- S.W. Yang, , Oxid. Met, 15, pp.375~ (1981)
- D. J. Young, "High Temperature Oxidation and Corrosion of Metals" (2008), Elsevier
- C. Wagner, , Z. Phys. Chem, B21, pp.25~ (1933)
- G. Tammann, , Z. Anorg. Allg. Chem, 111, pp.78~ (1920)
- S. J. Park, , J. Nanomater (2015)
- S. J. Park, , Ms, pp.2015
- M. J. Donachie, "Superalloys: A Technical Guide", pp.287~322 (2002), ASM International
- D. Caplan, , J. Electrochem. Soc, 108, pp.438~ (1961)
- C. S. Tedmon, , J. Electrochem. Soc, 113, pp.766~ (1966)
- S. J. Park, , Corros. Sci, 90, pp.305~ (2015)
- M. P. Brady, , JOM, 48, pp.46~ (1996)
- I. C. I. Okafor, , JOM, 51, pp.35~ (1999)
- H. Xiaoxiao, , Rare Metal Mat. Eng, 39, pp.1908~ (2010)
- A. Ul-Hamid, , Mater. Charact, 58, pp.13~ (2007)
- J. H. Park, , Oxid. Met, 33, pp.31~ (1990)
- C. S. Cheng, , Phys. Status Solidi A, 155, pp.417~ (1996)
- H. Guo, , Corros. Sci, 78, pp.369~ (2014)
- H. Guo, , Corros, Sci, 53, pp.2228~ (2011)
- S. Pizza, , Corros. Sci, 40, pp.1087~ (1998)
- M. A. Pech-Canul, , Electrochim. Acta, 140, pp.258~ (2014)