Influence of plasma nitriding on dry wear, corrosion and tribocorrosion performance of 17-4 precipitation hardening stainless steelAuswirkungen des Plasmanitrierens von 17-4 ausscheidungsgeharteten Edelstahls auf Verschleiss, Korrosion und Tribokorrosionsverhalten

Mindivan F., Aktas G. R., Bayram A.

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, cilt.53, sa.8, ss.963-978, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53 Sayı: 8
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1002/mawe.202100301
  • Dergi Adı: MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.963-978
  • Anahtar Kelimeler: 17-4 precipitation hardening stainless steel, plasma nitriding, dry-wear, corrosion, tribocorrosion, STEEL, BEHAVIOR
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

Plasma nitriding treatment of 17-4 precipitation hardening stainless steels was carried out at 400 degrees C and 450 degrees C using a direct current unit. The nitriding layer thicknesses of the plasma nitrided at 400 degrees C and 450 degrees C were measured as 37.29 mu m and 49.97 mu m, respectively. The plasma nitrided sample at 400 degrees C presented dominant martensite and retained austenite phases; however, the height of main martensite diffraction peaks increased at 450 degrees C. The hardness results demonstrated that the samples at 400 degrees C and 450 degrees C were 2.9 and 3.1 times as hard as the untreated sample, respectively. The wear rate values of the sample at 450 degrees C showed a decrease by 19 % in the corrosive salt solution and 57 % in the dry-sliding condition compared with that of untreated sample. The corrosion potential of the sample at 400 degrees C had more positive potential value and lower current density value than those of at 450 degrees C. The corrosion resistance of the sample at 400 degrees C improved due to the positive effect of the retained austenite phase. In this study, the wear was more dominant rather than corrosion, therefore plasma nitrided sample at 450 degrees C showed the best dry wear and tribocorrosion resistance.