Kinetics of corrosion on the intermetallic phase matrix FeAl in high temperature

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

Abstrakty

EN

Purpose: Alloys on intermetallic phase matrix of iron and aluminium are considered the future materials for high-temperature applications as they are highly resistant to oxidation to temperature of 1100°C. The paper presents results of tests concerning kinetics of corrosion processes of alloy on intermetallic phase matrix FeAl type Fe40Al5CrTiB after vacuum casting and plastic treatment with the use of co-extrusion method and comparably for flameproof steel X12CrCoNi2120. Design/methodology/approach: Corrosion tests were conducted in gas environment including 0.08% SO2, 0.02% HCl, 9% O2 and nitrogen in temperature from 900°C to 1100°C in time of 100 hours. Kinetics of corrosion processes was marked, the condition of the surface of samples after tests was characterized with the use of electron scanning microscope and also the chemical composition of corrosion products was determined. Findings: It was stated, on the basis of tests results that the increase of weight of corrosion products in time function has a parabolic character, where the highest mass was weighed for samples after test conducted in temperature of 1100°C. A significantly higher corrosive resistance of alloys was found in comparison with the resistance of flameproof steel types CrNi with austenitic structure. 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 around the world in recent years. Originality/value: The aim of this paper was to determine the influence of passivation in gas environment including 0.08% SO2, 0.02% HCl, 9% O2 and nitrogen in temperature from 900°C to 1100°C in time of 100 hours on corrosion resistance of Fe40Al5CrTiB intermetallic phase based alloy.

Słowa kluczowe

EN

metallic alloy; corrosion; microstructure

PL

stop metaliczny; korozja; mikrostruktura

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 57, nr 1
• Strony: 7--14
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Cebulski J.

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

autor

Lalik S.

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

Bibliografia

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