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Title: DIFFUSION COATINGS FOR CORROSION RESISTANT COMPONENTS IN COAL GASIFICATION SYSTEMS

Abstract

Heat-exchangers, filters, turbines, and other components in integrated coal gasification combined cycle system must withstand demanding conditions of high temperatures and pressure differentials. Under the highly sulfiding conditions of the high temperature coal gas, the performance of components degrade significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low cost alloy may improve is resistance to such sulfidation attack and decrease capital and operating costs. A review of the literature indicates that the corrosion reaction is the competition between oxidation and sulfidation reactions. The Fe- and Ni-based high-temperature alloys are susceptible to sulfidation attack unless they are fortified with high levels of Cr, Al, and Si. To impart corrosion resistance, these elements need not be in the bulk of the alloy and need only be present at the surface layers.

Authors:
; ;
Publication Date:
Research Org.:
SRI International (US)
Sponsoring Org.:
(US)
OSTI Identifier:
828177
DOE Contract Number:  
FC26-03NT41616
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 May 2004
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ALLOYS; CAPITAL; COAL GAS; COAL GASIFICATION; COMBINED CYCLES; CORROSION; CORROSION RESISTANCE; DEPOSITION; DIFFUSION COATINGS; HEAT EXCHANGERS; OPERATING COST; OXIDATION; SULFIDATION; TURBINES

Citation Formats

Krishnan, Gopala N, Malhotra, Ripudaman, and Sanjurjo, Angel. DIFFUSION COATINGS FOR CORROSION RESISTANT COMPONENTS IN COAL GASIFICATION SYSTEMS. United States: N. p., 2004. Web. doi:10.2172/828177.
Krishnan, Gopala N, Malhotra, Ripudaman, & Sanjurjo, Angel. DIFFUSION COATINGS FOR CORROSION RESISTANT COMPONENTS IN COAL GASIFICATION SYSTEMS. United States. doi:10.2172/828177.
Krishnan, Gopala N, Malhotra, Ripudaman, and Sanjurjo, Angel. Sat . "DIFFUSION COATINGS FOR CORROSION RESISTANT COMPONENTS IN COAL GASIFICATION SYSTEMS". United States. doi:10.2172/828177. https://www.osti.gov/servlets/purl/828177.
@article{osti_828177,
title = {DIFFUSION COATINGS FOR CORROSION RESISTANT COMPONENTS IN COAL GASIFICATION SYSTEMS},
author = {Krishnan, Gopala N and Malhotra, Ripudaman and Sanjurjo, Angel},
abstractNote = {Heat-exchangers, filters, turbines, and other components in integrated coal gasification combined cycle system must withstand demanding conditions of high temperatures and pressure differentials. Under the highly sulfiding conditions of the high temperature coal gas, the performance of components degrade significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low cost alloy may improve is resistance to such sulfidation attack and decrease capital and operating costs. A review of the literature indicates that the corrosion reaction is the competition between oxidation and sulfidation reactions. The Fe- and Ni-based high-temperature alloys are susceptible to sulfidation attack unless they are fortified with high levels of Cr, Al, and Si. To impart corrosion resistance, these elements need not be in the bulk of the alloy and need only be present at the surface layers.},
doi = {10.2172/828177},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {5}
}