ISSN:
1573-4889
Schlagwort(e):
STEELS
;
SULFIDATION
;
SCALE STRESSES
;
ACOUSTIC EMISSION
;
THERMAL-EXPANSION COEFFICIENTS
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract Several high-temperature processes in chemical,petrochemical, and energy-processing industry arecharacterized by H2S-containing atmospheres,confronting engineers with severe corrosion attack ofthe metallic components. Sulfidation is observed onmaterials used for heat exchangers within theheat-recovery zones. The damage is originated not onlyby the relatively fast growth rates of the sulfidescales, but is also due to the loss of their limitedprotective effect by cracking. Scale failure, as aconsequence of stresses generated during scale growthand by temperature changes, was investigated on a carbon steel, a low-chromium steel (1Cr-0.4Mo, T12),a ferritic-chromium steel (12Cr-1Mo), and on austeniticsteel (18Cr-9Ni, AISI 321). The experiments in thetemperature range 400-600°C (700°C), withsubsequent cooling to ambient temperature, wereaccompanied by acoustic-emission measurements in orderto detect scale cracking. Critical parameters for scalefailure are presented.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1018850102074
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