Failure Analysis of Hydrogen Corrosion of the Lens Gasket

Abstract:

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The 10MoWVNb steel lens gaskets are widely used for the flange linking of high pressure tube in the synthetic ammonia system in chemical fertilizer plant. The gasket worked in H2-N2-NH3 environment at the temperature of 300°C. It often fails because of hydrogen corrosion. The microstructure and corrosion characteristic of the lens gasket were studied by optical microscope. The results showed that the hydrogen blister appeared preferentially at the interface of inclusions. The corrosion depth was 0.65 millimeter. There were little intergranular crack on inner surface.

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Periodical:

Edited by:

Yi-Min Deng, Aibing Yu, Weihua Li and Di Zheng

Pages:

462-465

DOI:

10.4028/www.scientific.net/AMM.37-38.462

Citation:

X. C. Ma and G. F. Xu, "Failure Analysis of Hydrogen Corrosion of the Lens Gasket", Applied Mechanics and Materials, Vols. 37-38, pp. 462-465, 2010

Online since:

November 2010

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$35.00

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