Home > Collections > NSTDA's Research Publications > MICROSTRUCTURE AND EROSION-CORROSION BEHAVIOUR OF AS-CAST HIGH CHROMIUM WHITE IRONS CONTAINING MOLYBDENUM IN AQUEOUS SULFURIC-ACID SLURRY
Chiang Mai University; National Science & Technology Development Agency - Thailand; National Metal & Materials Technology Center (MTEC)
Type
Article
Source Title
ARCHIVES OF METALLURGY AND MATERIALS
ISSN
1733-3490
Year
2015
Volume
60
Issue
2
Page
919-923
Open Access
gold, Green Submitted
Publisher
POLSKA AKAD NAUK, POLISH ACAD SCIENCES, INST METALL & MATER SCI PAS
DOI
10.1515/amm-2015-0230
Format
PDF
Abstract
Microstructure and erosion-corrosion behaviour of as-cast high chromium white irons containing molybdenum in aqueous sulfuric-acid slurry was studied. The experimental irons contained 28 wt.%Cr with a Cr:C ratio of about 10 and up to 10 wt.% Mo. The irons with up to 6 wt.% Mo are hypoeutectic, whereas the iron with 10 wt.% Mo becomes eutectic/peritectic. Mo addition promotes formation of M23C6 and M6C, instead of typical M7C3. Erosion-corrosion testing was performed in aqueous sulfuric-acid slurry containing alumina particles. The hypoeutectic Fe-28Cr-2.7C-1Mo with mainly M7C3 and the eutectic/peritectic Fe-28Cr-2.6C-10Mo showed reduced wear rates of about 30% and 7% of that of the reference iron without Mo addition, respectively. The reduction of the carbide-matrix hardness difference, the increase of corrosion resistance of the matrices, and the increase of macro-hardness are determining factors for the improvement of erosion-corrosion resistance of the irons.
Thailand Graduate Institute of Science and Technology Scholarship of the National Science and Technology Development Agency; National Research University Project under Thailand's Office of the Higher Education Commission; Materials Science Research Center, Faculty of Science, Chiang Mai University
License
N/A
Rights
N/A
Publication Source
WOS
Document
MICROSTRUCTURE AND EROSION-CORROSION BEHAVIOUR OF AS-CAST HIGH CHROMIUM WHITE IRONS CONTAINING