Corrosion Behaviour of 17-4 PH Stainless Steels Produced by Adding Different Amounts of Alloying Element and Aged at Different Times
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Maik Nauka/Interperiodica/Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study the corrosion behaviour of 17-4 PH (precipitation hardening) stainless steel alloys, produced by adding Ta different amounts with the method of powder metallurgy, and aged at different times was investigated. Four different amounts tantalum (0.15, 0.30, 0.45 and 0.60% weight) was added to the alloy. The prepared powders were produced green compacts at circle minus 10 x 6 mm dimensions (800 MPa) after mixing with turbule for 2 hours. Green compacts produced were sintered for 1 h at 1300 degrees C under a vacuum of 10-6 mbar. The sintered samples were aged 1, 4 and 8 hours at 480 degrees C after being in solution at 1050 degrees C. Polarization measurements were performed in a corrosion cell, using three different electrode technique. In the corrosion tests, 0.1 M H2SO4 was used as the electrolyte medium. As a result of the studies, the alloy the hardness and densities were increased with increasing Ta amount. Similarly, the hardness and densities of produced samples were with increasing aging time. The corrosion tests revealed that increasing the amount of Ta added to the alloy increased the alloy's resistance to corrosion. The alloy's corrosion resistance decreased as aging time increased. The active corrosion mechanism was seen to be pitting corrosion in all alloys.
Açıklama
Anahtar Kelimeler
17-4 PH stainless steel, sintering, corrosion, aging
Kaynak
Protection of Metals and Physical Chemistry of Surfaces
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
59
Sayı
6
