Diffusion barriers for preventing high temperature hydrogen atta

Details Diffusion barriers for preventing high temperature hydrogen atta Diffusion barriers for preventing high temperature hydrogen atta

1996-08-14

2000-02-01

McKane, E. Leigh

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

422 7, 423DIG8, C23F 1100

Patent

active

060199431

ABSTRACT:
A method of protecting carbon and low-alloy steels from high temperature hydrogen attack. A carbon or low-alloy steel portion of a reactor system that is to be contacted with high pressure hydrogen at elevated temperatures is provided with an intermetallic, diffusion barrier layer that reduces the rate of hydrogen attack at least ten-fold compared to the steel portion without the diffusion barrier layer.

REFERENCES:
patent: 5405525 (1995-04-01), Heyse et al.
patent: 5406014 (1995-04-01), Heyse et al.
C.M. Cooper, "Hydrogen Attack", Hydrocarbon Processing, Aug., 1972, pp. 69-70.
C.L. Chen, P.Y. Lee, J.K. Wu, D.J. Chiou, C.Y. Chu and J.Y. Lin, "The Use of Zinc And Tin Coatings And Chemical Addtives For Preventing Hydrogen Embrittlement In Steel", Corrosion Prevention & Control, pp. 71-74, Jun., 1993.
"Corrosion in the Petrochemical Industry", edited by Linda Garverick, ASM International, pp. 59-63 and pp. 330-332, Dec., 1994.
S.S. Chatterjee, B.G. Ateya, and H.W. Pickering, "Effect of Electrodeposited Metals on the Permeation of Hydrogen through Iron Membranes", Mettallurgical Transactions, vol. 9A, pp. 389-395, Mar., 1978.
M. Zamanzadeh, A. Allam, C. Kato, B. Ateya, and H.W. Pickering, "Hydrogen Absorption during Electrodeposition and Hydrogen Charging of Sn and Cd Coatings on Iron", J. Elect. Chem. Soc., pp. 284-289, vol. 129, No. 2.
"Eight Forms of Corrosion", pp. 108-115, "High-Temperature Metal-Gas Reactions", pp. 367-373, Sections from Corrosion Engineering, text by M.G. Fonatana and D. Greene.

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