Comparing the performance of HIPed and Cast Stellite 6 alloy in liquid-solid slurries

MALAYOĞLU U., Neville A.

WEAR, cilt.255, ss.181-194, 2003 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 255
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0043-1648(03)00287-4
  • Dergi Adı: WEAR
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.181-194
  • Anahtar Kelimeler: HIPed, Cast Stellite 6, liquid-solid slurries, erosion, corrosion
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this paper, results from erosion-corrosion tests performed under liquid-solid erosion conditions in 3.5% NaCl liquid medium are reported. The focus of the paper is to compare the behaviour of Cast and Hot Isostatically Pressed (HIPed) Stellite 6 alloy in terms of their electrochemical corrosion characteristics, their resistance to mechanical degradation and relationship between microstructure and degradation mechanisms. It has been shown that HIPed Stellite 6 possesses better erosion and erosion corrosion resistance than that of Cast Stellite 6 and two stainless steels (UNS S32760 and UNS S31603) under the same solid loading (200 and 500 mg/l), and same temperature (20 and 50 degreesC). The material removal mechanisms have been identified by using atomic force microscopy (AFM) and shown preferential removal of the Co-rich matrix to be less extensive on the HIPed material. (C) 2003 Elsevier Science B.V. All rights reserved.