Na_2SO_4-MgSO_4-CaSO_4沉积引起的铁基合金的热腐蚀 Ⅰ.在空气中的腐蚀

中国腐蚀与防护学报

1990, Vol. 10

Issue (2): 127-134

研究报告

本期目录 | 过刊浏览

Na_2SO_4-MgSO_4-CaSO_4沉积引起的铁基合金的热腐蚀 Ⅰ.在空气中的腐蚀

史良权;张允书;石声泰

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

Na_2SO_4-MgSO_4-CaSO_4 INDUCED HOT CORROSION OF IRON BASE ALLOYS Ⅰ. CORROSION BEHAVIOUR IN AIR

Shi Liangquan Zhang Yunshu and Shih Shengtai (Shanghai Institute of Metallurgy; Academia Sinica)

全文: PDF(3070 KB)

摘要: 采用热重分析法和物理测试技术研究了铁铬合金子700～800℃空气中有Na_2SO_4-MgSO_4-CaSO_4三元熔融硫酸盐膜存在时的腐蚀行为,发现三元硫酸盐能加速铁铬合金的氧化。根据实验结果可以认为,这一加速腐蚀是由于硫化引起的贫铬及硫化物加速传质所致。

Abstract：The corrosion behaviour of Fe~-Cr alloys in the presence of a thin layer of Na_2SO_4-MgSO_4-CaSO_4 was studied in air in the temperature range of 700～800℃ by means of thermogravimetry and some physical analysis techniques such as X-ray diffraction, SEM, EMP, etc. It was found that the molten ternary sulfates accelerated the oxidation of the alloys. The experimental results lead to a proposition that the accelerated oxidation is related to the chromium depletion resulting from sulfidation and easier diffusion of metal ions through the sulfides formed.

收稿日期: 1990-04-25

基金资助:国家基金委的资助

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史良权;张允书;石声泰. Na_2SO_4-MgSO_4-CaSO_4沉积引起的铁基合金的热腐蚀 Ⅰ.在空气中的腐蚀[J]. 中国腐蚀与防护学报, 1990, 10(2): 127-134.
. Na_2SO_4-MgSO_4-CaSO_4 INDUCED HOT CORROSION OF IRON BASE ALLOYS Ⅰ. CORROSION BEHAVIOUR IN AIR. J Chin Soc Corr Pro, 1990, 10(2): 127-134.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1990/V10/I2/127

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