CORROSION-RESISTANCE OF SINTERED AUSTENITIC STAINLESS-STEELS IN BOILING NITRIC-ACID

Authors
OTERO E PARDO A SAENZ E UTRILLA MV PEREZ FJ
Citation
E. Otero et al., CORROSION-RESISTANCE OF SINTERED AUSTENITIC STAINLESS-STEELS IN BOILING NITRIC-ACID, Canadian metallurgical quarterly, 36(1), 1997, pp. 65-72
Citations number
20
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Canadian metallurgical quarterly → ACNP
ISSN journal
00084433
Volume
36
Issue
1
Year of publication
1997
Pages
65 - 72
Database
ISI
SICI code
0008-4433(1997)36:1<65:COSASI>2.0.ZU;2-6
Abstract
A comparative study of the corrosion resistance in boiling nitric acid has been carried out for P/M and cast AISI 304L and AISI 316L stainle ss steels. The influence of sensitization and acid concentration on th e corrosion rate have been determined. The results are discussed with reference to ASTM A262 (Huey test). Scanning electron microscopy was u sed to study the microstructural characteristics and the corrosion pro ducts. It is shown that the corrosion phenomenon in P/M steels is almo st entirely due to pore induced crevices; a possible corrosion mechani sm for the materials is proposed. (C) 1997 Canadian Institue of Mining and Metallugy.