Corrosion performance of structural alloys. Metadata

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Title

  • Main Title Corrosion performance of structural alloys.

Creator

  • Author: Natesan, K.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Argonne National Laboratory
    Place of Publication: Illinois
    Additional Info: Argonne National Lab., IL (United States)

Date

  • Creation: 1999-07-15

Language

  • English

Description

  • Content Description: Component reliability and long-term trouble-free performance of structural materials are essential in power-generating and gasification processes that utilize coal as a feedstock. During combustion and conversion of coal, the environments encompass a wide range of oxygen partial pressures, from excess-air conditions in conventional boilers to air-deficient conditions in 10W-NO{sub x} and gasification systems. Apart from the environmental aspects of the effluent from coal combustion and conversion, one concern from the systems standpoint is the aggressiveness of the gaseous/deposit environment toward structural components such as waterwall tubes, steam superheaters, syngas coolers, and hot-gas filters. The corrosion tests in the program described in this paper address the individual and combined effects of oxygen, sulfur, and chlorine on the corrosion response of several ASME-coded and noncoded structural alloys that were exposed to air-deficient and excess-air environments typical of coal-combustion and gasification processes. Data in this paper address the effects of preoxidation on the subsequent corrosion performance of structural materials such as 9Cr-1Mo ferritic steel, Type 347 austenitic stainless steel, Alloys 800, 825, 625, 214, Hastelloy X, and iron aluminide when exposed at 650 C to various mixed-gas environments with and without HCI. Results are presented for scaling kinetics, microstructural characteristics of corrosion products, detailed evaluations of near-surface regions of the exposed specimens, gains in our mechanistic understanding of the roles of S and Cl in the corrosion process, and the effect of preoxidation on subsequent corrosion.
  • Physical Description: 14 p.

Subject

  • Keyword: Corrosion
  • Keyword: Building Materials
  • Keyword: Alloys
  • Keyword: Hastelloy X
  • STI Subject Categories: 36 Materials Science
  • Keyword: Stainless Steels
  • Keyword: Ferritic Steels
  • Keyword: Partial Pressure
  • Keyword: Corrosion Products
  • Keyword: Heat Exchangers
  • Keyword: Performance

Source

  • Conference: 13th Annual Conference on Fossil Energy Materials, Knoxville, TN (US), 05/11/1999--05/13/1999

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: ANL/ET/CP-98866
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11770
  • Archival Resource Key: ark:/67531/metadc627879

Note

  • Display Note: OSTI as DE00011770
  • Display Note: Medium: P; Size: 14 pages