Corrosion resistance of FeAl intermetallic phase based alloy in water solution of NaCl

• Autorzy: Cebulski J. , Lalik S. , Michalik R.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Recognizing of corrosion mechanisms in liquid mediums can lead to obtain corrosion-proof material e. g. by applying passivation phenomenon. In this paper attention was paid to determine the corrosion resistance of Fe40Al intermetallic phase based alloy in corrosive medium of liquid NaCl. Research of material susceptibility to surface activation in the pipeline of corrosion processes are conducted. Design/methodology/approach: In the corrosion research electrolyser, potentiostat "Solartron 1285" and computer with "CorrWare 2" software were used. Results of the research were worked out with "CorrView" software. The potentials values were determined in relation to normal hydrogen electrode (NEW). The recording of potential/density of current-time curve was conducted for 300 s. Polarization of samples were conducted in range of potential from 300 mV lower than stationary to Ecor+1500 mV. Potential change rate amounted 10 mV/min every time. Findings: The results of research conducted in 3% NaCl solution, the best electrochemical corrosion resistance were showed by samples after annealing during 72 hours. It was confirmed by the lowest value of corrosion current density, low value of passive current density, pitting corrosion resistance much higher than in other samples. Practical implications: The last feature is the reason to conduct the research for this group of materials as corrosion resistance materials. Especially FeAl intermetallic phase based alloys are objects of research in Poland and all world during last years. Originality/value: The goal of this work was to determine the influence of passivation in water solutions of H2SO4 and HNO3 on corrosion resistance of Fe40Al intermetallic phase based alloy in 3% NaCl solutions.

Słowa kluczowe

EN

metallic alloys; corrosion; microstructure

PL

stopy metaliczne; korozja; mikrostruktura

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 27, nr 1
• Strony: 15--18
• Opis fizyczny: Bibliogr. 15 poz., il., tab., wykr.

Twórcy

autor

Cebulski J.

autor

Lalik S.

autor

Michalik R.

• Faculty of Materials Science and Metallurgy, Sielsian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

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