Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Effect of preferential dissolution on erosion-corrosion for chromium steel in alkali slurry

Stack, M.M. and Chi, K. (2002) Effect of preferential dissolution on erosion-corrosion for chromium steel in alkali slurry. Transactions of the Non-Ferrous Metal Society of China, 12 (5). pp. 931-935. ISSN 1003-6326

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

An investigation was carried out concerning the effect of preferential dissolution on the erosion-corrosion for a chromium steel in 1mol/L NaOH. Preliminary tests using a potentiodynamic technique were performed in order to establish the presence of preferential dissolution in the alkali solution with and without the alumina particles at different rotation speeds. For purposes of quantifying the observed phenomena a potentiostatic mass loss method was also used. The results show that the active peaks occur at potential between +0.4 and +0.5V on the polarization curves, which indicates that there is a preferential dissolution for chromium steel under erosion-corrosion conditions and the ferrite phase acts as a sacrificial anode in favor of (Fe,Cr)7C3 phase. Addition of particles can promote the preferential dissolution at different rotation speeds. The combined effects of erosion-corrosion results in total mass loss rates to be greater than the sum effects of each process taken alone, thus showing a strong synergism between erosion and corrosion due to preferential dissolution.

Item type: Article
ID code: 6283
Keywords: erosion, corrosion, tribology, steel, materials science, oxidation, Mechanical engineering and machinery, Chemistry, Mining engineering. Metallurgy, Geotechnical Engineering and Engineering Geology, Materials Chemistry, Metals and Alloys, Condensed Matter Physics
Subjects: Technology > Mechanical engineering and machinery
Science > Chemistry
Technology > Mining engineering. Metallurgy
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Related URLs:
Depositing user: Strathprints Administrator
Date Deposited: 10 Jul 2008
Last modified: 07 Jul 2014 11:58
URI: http://strathprints.strath.ac.uk/id/eprint/6283

Actions (login required)

View Item