镍在705℃熔盐中加速腐蚀的研究

中国腐蚀与防护学报

1987, Vol. 7

Issue (3): 207-212

研究报告

本期目录 | 过刊浏览

镍在705℃熔盐中加速腐蚀的研究

朱日彰;郑晓光

北京钢铁学院;北京钢铁学院

A STUDY OF ACCELRATED CORROSION OF NICKEL IN MOLTEN SALTS AT 705℃

Zhu Rizhang and Zheng Xiaoguang(Beijing University of Iron and Steel Technology)

全文: PDF(1148 KB)

摘要: <正> 燃气涡轮高温台金部件在600～850℃之间由熔盐引起的加速腐蚀(低温热腐蚀)现象,是当前热腐蚀研究中的一个重要问题,一般舰船及一些工业涡轮的热腐蚀多属此类。关于镍基合金的加速腐蚀机制,目前已有许多研究,但尚未获得很好的解释。本工作对纯镍在705℃几种不同条件下的熔盐腐蚀行为进行了研究,并对镍的加速腐蚀机制进行了探讨。

Abstract：Sulfate-induced accelerated corrosion of nickel has been studied at 750℃ both with the method of Na_2SO_4-eoating test in O_2-0.45％(SO_2+SO_3) (1atm), and with the crucible-test in air in which the specimens are tatally inmersed in the molten NiSO_4-Na_2SO_4 salts mixture. Nickel is rapidly corroded under both circumstances, and an intermixed(NiO+Ni_3S_2)layer is formed as the major corrosion product. The islands of Ni_3S_2 in the intermixed layer are found to be inter-connected with each other. The NiSO_4-Na_2SO_4 melt may act as an oxidant by liberating corrosive gas (SO_3) and cause rapid corrosion of nickel.

收稿日期: 1987-06-25

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引用本文:

朱日彰;郑晓光. 镍在705℃熔盐中加速腐蚀的研究[J]. 中国腐蚀与防护学报, 1987, 7(3): 207-212.
. A STUDY OF ACCELRATED CORROSION OF NICKEL IN MOLTEN SALTS AT 705℃. J Chin Soc Corr Pro, 1987, 7(3): 207-212.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1987/V7/I3/207

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