硫酸钙沉积导致铁基和镍基合金的热腐蚀

中国腐蚀与防护学报

1983, Vol. 3

Issue (3): 133-138

研究报告

本期目录 | 过刊浏览

硫酸钙沉积导致铁基和镍基合金的热腐蚀

石声泰;李守臣;曹铁樑

中国科学院上海冶金研究所;中国科学院上海冶金研究所;中国科学院上海冶金研究所

HOT CORROSION OF IRON-AND NICKEL-BASE SUPERALLOYS CAUSED BY DEPOSIT OF CALCIUM SULFATE

Shih Shengtai Li Shouehen Cao Telian (Shanghai Institute of Metallurgy;Academia Sinica)

全文: PDF(2867 KB)

摘要: 作者在几种铁基和镍基高温合金的试样上涂硫酸钙盐膜在1000℃及1150℃加热研究了硫酸钙对这些合金热腐蚀的影响。测定了这些合金的高温腐蚀动力学曲线。对腐蚀产物进行了 X 射线衍射、电子衍射、电子探针分析及金相检查。实验结果证明:由硫酸钙沉积导致的热腐蚀与合金成份有密切的关系。温度愈高,盐膜愈厚,腐蚀也愈严重。含钼又有足够铝含量以生成 Al_2O_3氧化皮的合金,由于 Al_2O_3被 MoO_3酸性熔融,与 CaSO_4反应可能生成液态的 CaMoO_4,会发生严重的腐蚀。合金的铬含量增高会提高抗 CaSO_4沉积腐蚀的能力,抗蚀性原来不好的合金渗铬后抗蚀性亦显著提高。

Abstract：The effect of calcium sulfate deposit on hot corrosion of iron-and nickel base superalloys was studied by coating various alloy samples with salt films of calcium sulfate and heating them up to 1000 and 1150℃.Kinetics curves were run for the alloys under study.Corrosion products were analyzed by X- ray diffraction,electron diffraction and electron probe analyses as well as by metallographic techniques.Experimental results showed that hot corrosion caused by CaSO_4 is highly composition dependent.Corrosion becomes more severe with increasing temperature and larger amount of salt coating.Mo-con- taining alloys with enough Al to give protective films of Al_2O_3 show catas- traphic corrosion due probably to the formation of liquid calcium molybdate. Increasing the Cr of content of the alloy raises its hot corrosion resistance,as is also evidenced by enhanced corrosion resistance of the less resistant alloys with chromizing.The mechanism of corrosion caused by CaSO_4 deposit is proposed.

收稿日期: 1983-06-25

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	石声泰
	李守臣
	曹铁樑
44.8K

引用本文:

石声泰;李守臣;曹铁樑. 硫酸钙沉积导致铁基和镍基合金的热腐蚀[J]. 中国腐蚀与防护学报, 1983, 3(3): 133-138.
. HOT CORROSION OF IRON-AND NICKEL-BASE SUPERALLOYS CAUSED BY DEPOSIT OF CALCIUM SULFATE. J Chin Soc Corr Pro, 1983, 3(3): 133-138.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1983/V3/I3/133

[1] J.Biert and R.Scheidagger:Schweizer Archiv,19,359 (1953)
[2] H.T.Shirly:JISI.,182,144(1956)
[3] B.O.Buckland:“Modified Residual Fuel for Gas Turbines”presented at the Annual Meeting of ASME,New York,(1954)
[4] P.A.Bergman:Corrosion,23,72(1997)
[5] R.J.Bishop,et al.:“Environmental Degradation of High Temperature Materials”,The Institution of Metallurgists,Spring Residual Conference,Series 3,2,13,5/78(1980)
[6] P.A.Bergman:“High Temperature Metallic Corrosion of Sulfur and its Compounds”,edited by Z.A.Foroulis and F.S.Pettit.The Electrochemical Society Inc.,New York,224(1970)
[7] S.Morowec:Proceedings 8th ICMC,Mainz,Fed.Rep.Germany,Ⅲ,2129(1981)
[8] N.C.Bornstein,et al.:“Deposition and Corrosion in Gas Turbines”,edited by A.B.Hart and A.J.B.Cutler,Applied Sci.Pub.Lond.,70(1973)
[9] J.A.Gobel,F.S.Pettit and G.W.Goward:Metall.Trans.,4,261(1973)

No related articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed