CORROSION MECHANISM FOR Al_2(SO_4)_3 EVAPORATOR TUBES MADE OF TITANIUM

J Chin Soc Corr Pro

1994, Vol. 14

Issue (3): 225-230 DOI:

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CORROSION MECHANISM FOR Al_2(SO_4)_3 EVAPORATOR TUBES MADE OF TITANIUM

Liu Xiaoguang; Zhang Shuxia; Shao Jinghua; Wan Pingyu (Beijing Institute of Chemical Technology)

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Abstract The present paper describes a study on corrosion mechanism of A12(SO4)3 evaporator tubes made of titanium by means of polarization curve measurements, weight loss tests, hot wall tabe testing and hydrogen embrittlement studies. Results show that the reasons of their failure include active dissolution and hydrogen embrittlement caused by the break down of passive film. The critical potential of hydrogen embrittlement of titanium in A12(SO4)3 is -270mV (SCE). The formation of titanium hydride was proved by XPS analysis.

Key words: Titanium Hydrogen emtrittlement Passive film

Received: 25 June 1994

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Liu Xiaoguang; Zhang Shuxia; Shao Jinghua; Wan Pingyu (Beijing Institute of Chemical Technology). CORROSION MECHANISM FOR Al_2(SO_4)_3 EVAPORATOR TUBES MADE OF TITANIUM. J Chin Soc Corr Pro, 1994, 14(3): 225-230.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1994/V14/I3/225

1于福洲．金属材料的耐腐蚀性,北京:科学出版社,1982,3362M．G．方坦纳,N．D．格林,左景伊译．腐蚀工程,北京:化学工业出版社,1982,1713SternM;MarkridesA．J．Electrochem．Soc,1960;107(9):7824辛湘杰,恭峻峰,董敏．钛的腐蚀、防护及工程应用,合肥:安徽科学出版社,1988,3775徐志洪．氯碱工业,1986,6:54

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