High Temperature Oxidation Behavior of Three Co-20Re-xCr Alloys in 3.04×10-5 Pa Oxygen at 1000 and 1100 ℃

doi:10.11902/1005.4537.2018.075

Journal of Chinese Society for Corrosion and protection

2019, Vol. 39

Issue (1): 83-88 DOI: 10.11902/1005.4537.2018.075

Current Issue | Archive | Adv Search

High Temperature Oxidation Behavior of Three Co-20Re-xCr Alloys in 3.04×10^-5 Pa Oxygen at 1000 and 1100 ℃

Ling WANG¹,Junhuai XIANG^1,²(

),Honghua ZHANG^1,²,Songlin QIN¹

1. School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
2. Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China

Download:

HTML

PDF(10055KB)
Export: BibTeX | EndNote (RIS)

Abstract

The iso-thermal oxidation behavior of Co-20Re-20Cr, Co-20Re-25Cr, and Co-20Re-30Cr alloys in 3.04×10^-5 Pa oxygen at 1000 and 1100 ℃ for 24 h was investigated. The three alloys show continuous mass loss due to the evaporation of Re element in the form of ReO₃. The mass loss is more obvious at 1100 ℃ for Co-20Re-20Cr and Co-20Re-25Cr alloys. The oxidation kinetics at 1000 and 1100 ℃ of Co-20Re-20Cr and Co-20Re-25Cr obeys parabolic law, while that of Co-20Re-25Cr is irregular. Correspondingly, the scales formed on the three alloys with different Cr content have a stratified structure. The outermost layer is composed of CoO, while the inner layer, which is very thick and porous, is composed of CoCr₂O₄. However, the very thin innermost layer composed of Cr₂O₃ is not very continuous and complete, accounting for its limited role for protection. With the increase of Cr content, the oxidation resistance of Co-20Re-xCr alloys is enhanced to a certain extent due to the formation of a Cr₂O₃ layer with better continuity and integrity. Furthermore, when the Cr content reaches up to 30%, the oxidation resistance of the alloy was improved greatly.

Key words: Co-Re-Cr iso-thermal oxidation high temperature oxidation resistance

Received: 30 May 2018

ZTFLH:

TG146.418

Fund: Supported by National Natural Science Foundation of China(51701054);Science and Technology Research Program of Jiangxi Provincial Education Department(GJJ160770)

Corresponding Authors: Junhuai XIANG E-mail: xiangjunhuai@163.com

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Ling WANG
	Junhuai XIANG
	Honghua ZHANG
	Songlin QIN

Cite this article:

Ling WANG,Junhuai XIANG,Honghua ZHANG,Songlin QIN. High Temperature Oxidation Behavior of Three Co-20Re-xCr Alloys in 3.04×10^-5 Pa Oxygen at 1000 and 1100 ℃. Journal of Chinese Society for Corrosion and protection, 2019, 39(1): 83-88.

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2018.075 OR https://www.jcscp.org/EN/Y2019/V39/I1/83

Table 1 Elemental compositions of two phases of Co-20Re-xCr (x=20, 25, 30) alloys (atomic fraction / %)

Fig.1 Oxidation kinetics (a) and corresponding parabolic plots (b) of Co-20Re-20Cr alloy during oxidation at 1000 and 1100 ℃ for 24 h

Fig.2 Oxidation kinetics (a) and corresponding parabolic plots (b) of Co-20Re-25Cr alloy during oxidation at 1000 and 1100 ℃ for 24 h

Fig.3 Oxidation kinetics (a) and corresponding parabolic plots (b) of Co-20Re-30Cr alloy during oxidation at 1000 and 1100 ℃ for 24 h

Table 2 Approximate parabolic rate constants K_p of Co-20Re-xCr (x=20, 25, 30) alloys during oxidation at 1000 and 1100 ^oC for 24 h (g²·cm^-4·s^-1)

Fig.4 Surface morphologies of complete areas (a, b, d, e, g, h) and spallation areas (c, f, i) of Co-20Re-20Cr (a~c), Co-20Re-25Cr (d~f) and Co-20Re-30Cr (g~i) alloys after oxidation for 24 h at 1000 ℃ (a, d, g) and 1100 ℃ (b, c, e, f, h, i)

Fig.5 SEM images of cross sections of Co-20Re-20Cr (a~c), Co-20Re-25Cr (d~f) and Co-20Re-30Cr (g~i) alloys after oxidiation for 24 h at 1000 ℃ (a, d, g) and 1100 ℃ (b, c, e, f, h, i)

Fig.6 Schematic model of oxide growth of Co-20Re-xCr (x=20, 25, 30) alloys during oxidation

[1]	Zhang Z G, Gesmundo F, Hou P Y, et al. Criteria for the formation of protective Al2O3 scales on Fe-Al and Fe-Cr-Al alloys [J]. Corros. Sci., 2006, 48: 741
[2]	Mikkelsen L, Larsen P H, Linderoth S. High temperature oxidation of Fe22Cr-alloy [J]. J. Therm. Anal. Calorim., 2001, 64: 879
[3]	Xiao B, Xiang J H, Zhang H H. Cyclic and static oxidation behavior of Fe-Cu-Ni-Al alloy at 900 ℃ [J].J.Chin. Soc. Corros. Prot., 2017, 37: 69
[3]	肖斌, 向军淮, 张洪华. 四元Fe-Cu-Ni-Al合金900 ℃下的恒温及循环氧化行为 [J]. 中国腐蚀与防护学报, 2017, 37: 69
[4]	Ding Q Q, Yu Q, Li J X, et al. Research progresses of rhenium effect in nickel based superalloys [J]. Mater. Rev., 2018, 32: 110
[4]	丁青青, 余倩, 李吉学等. 铼在镍基高温合金中作用机理的研究现状 [J]. 材料导报, 2018, 32: 110
[5]	Perepezko J H. The hotter the engine, the better [J]. Science, 2009, 326: 1068
[6]	Sato J, Omori T, Oikawa K, et al. Cobalt-base high-temperature alloys [J]. Science, 2006, 312: 90
[7]	R?sler J, Mukherji D, Baranski T. Co-Re-based alloys: A new class of high temperature materials? [J]. Adv. Eng. Mater., 2010, 9: 876
[8]	Gorr B, Christ H J, Mukherji D, et al. Thermodynamic calculations in the development of high-temperature Co-Re-based alloys [J]. J. Alloy. Compd., 2014, 582: 50
[9]	Gorr B, Wang L, Burk S, et al. High-temperature oxidation behavior of Mo-Si-B-based and Co-Re-Cr-based alloys [J]. Intermetallics, 2014, 48: 34
[10]	Niu Y, Cao Z Q, Gesmundo F, et al. Grain size effects on the oxidation of two ternary Cu-Ni-20wt.% Cr alloys at 700-800 ℃ in 1 atm O2 [J]. Corros. Sci., 2003, 45: 1125
[11]	Xiang J H, Niu Y, Gesmundo F. The oxidation of two ternary Fe-Cu-10 at.% Al alloys in 1 atm of pure O2 at 800-900 ℃ [J]. Corros. Sci., 2005, 47: 1493
[12]	Wang L, Gorr B, Christ H J, et al. Microstructure and oxidation mechanism evolution of Co-17Re-25Cr-2Si in the temperature range 800-1,100 ℃ [J]. Oxid. Met., 2015, 83: 465
[13]	Li T F. High Temperature Oxidation and Hot Corrosion of Metals [M]. Beijing: Chemical Industry Press, 2003
[13]	李铁藩. 金属高温氧化和热腐蚀 [M]. 北京: 化学工业出版社, 2003
[14]	Gorr B, Trindade V, Burk S, et al. Oxidation behaviour of model cobalt-rhenium alloys during short-term exposure to laboratory air at elevated temperature [J]. Oxid. Met., 2009, 71: 157
[15]	Gorr B, Burk S, Trindade V B, et al. The effect of pre-oxidation treatment on the high-temperature oxidation of Co-Re-Cr model alloys at laboratory air [J]. Oxid. Met., 2010, 74: 239

[1]	XU Xunhu,HE Cuiqun,XIANG Junhuai,WANG Ling,ZHANG Honghua,ZHENG Xiaodong. High Temperature Oxidation Behavior of Co-20Re-25Cr-1Si Alloy in 0.1 MPa Pure Oxygen[J]. 中国腐蚀与防护学报, 2020, 40(1): 75-80.
[2]	AI Peng,LIU Lixiang,LI Xiaogang,JIANG Wentao. Influence of TiAlSiN Coatings on High Temperature Oxidation Resistance of γ-TiAl Based Alloys[J]. 中国腐蚀与防护学报, 2019, 39(4): 306-312.
[3]	ZHAO Shilu ZHANG Jun LIU Changsheng. HIGH TEMPERATURE OXIDATION BEHAVIOR OF MULTI-COMPONENT (Ti, Al, Zr,Cr) N FILMS\par DEPOSITED BY MULTI-ARC ION PLATING[J]. 中国腐蚀与防护学报, 2009, 29(4): 296-300.
[4]	Yuefei Zhang. High Temperature Oxidation Resistance of the Plasma Titanizing on Copper Surface by Double Glow Discharge[J]. 中国腐蚀与防护学报, 2004, 24(3): 139-142 .

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed