The aim of this study was to investigate the
corrosion behaviour of annealed stainless steel mesh. Thermal oxidation
treatments were applied to steel mesh in a muffle furnace at 500 ᵒC, 700 ᵒC and
900 ᵒC. Surface morphology of annealed and non-annealed stainless steel meshes
was compared before and after polarization. Roughness of the steel surface was
increased after heat-treatment. The corrosion properties of non-annealed and
annealed steel were determined using linear sweep voltammetry. The corrosion behaviour
of annealed stainless steel was examined by means of a potentiostat in a 3.5
wt.% NaCl, 1 M H2SO4 and 1 M KOH electrolytes. The corrosion susceptibility of heat treated
stainless steel was more than that of non-heat treated stainless steel in
alkaline electrolyte. While pitting corrosion of non-annealed and annealed
stainless steel was different, corrosion potential and current of steel mesh
without heat treatment was the same as the steel meshes annealed at 500 ᵒC and
700 ᵒC. Corrosion current and corrosion potential of non-annealed steel was the
same as 500 ᵒC annealed steel mesh in acidic medium.
Bu çalışmanın amacı, tavlanmış paslanmaz çelik ağın
korozyon davranışını incelemektir. Çelik ağa 500 ᵒC, 700 ᵒC ve 900 ᵒC'de bir
kül fırını içerisinde termal oksidasyon işlemleri uygulanmıştır. Tavlanmış ve
tavlanmamış paslanmaz çelik ağların yüzey morfolojisi Elektrokimyasal
polarizasyondan önce ve sonra karşılaştırılmıştır. Isıl işlemden sonra çelik
yüzeyin pürüzlülüğü artmıştır. Tavlanmamış ve tavlanmış çeliğin korozyon
özellikleri doğrusal tarama voltametrisi kullanılarak belirlenmiştir. Tavlı
paslanmaz çeliğin korozyon davranışı, ağırlıkça % 3.5'lik NaCl, 1 M H2SO4
ve 1 M KOH elektrolitlerinde bir potansiyostat ile incelenmiştir. Isıl işlem
görmüş paslanmaz çeliğin korozyon duyarlılığı, alkalin elektrolitte ısıl işlem
görmemiş paslanmaz çeliğinkinden daha fazlaydı. Tavlanmamış ve tavlanmış
paslanmaz çeliğin çukur korozyonu farklıyken, ısıl işlem uygulanmayan çelik
ağın korozyon akımı ve korozyon potansiyeli 500 ᵒC ve 700 ᵒC'de tavlanan çelik
ağlarla aynıydı. Tavlanmamış çeliğin korozyon akımı ve korozyon potansiyeli
asidik ortamda 500 ᵒC tavlanmış çelik ağınkiyle aynıydı.
Primary Language | English |
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Subjects | Materials Engineering (Other) |
Journal Section | Research Articles |
Authors | |
Publication Date | April 30, 2020 |
Submission Date | July 26, 2019 |
Acceptance Date | April 16, 2020 |
Published in Issue | Year 2020 Volume: 25 Issue: 1 |
Announcements:
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