Pack-Boriding of Pure Iron with Powder Mixtures Containing ZrB 2

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ÇALIK A., UÇAR N., Karakas M., Tanis H.

High Temperature Materials and Processes, cilt.38, sa.2019, ss.342-346, 2019 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 2019
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1515/htmp-2017-0081
  • Dergi Adı: High Temperature Materials and Processes
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.342-346
  • Anahtar Kelimeler: boride layer, boriding, boriding agent, microhardness, ZrB 2
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Evet

Özet

Boriding of pure iron was investigated using the powder pack method with boriding powder mixtures containing different weight fractions of ZrB 2 (5%, 10%, 15% and 20%). The samples were borided in an electric resistance furnace for an exposure time of 4 h at 1,173 K temperature under atmospheric pressure. Borided samples were characterized by optical microscopy, X-ray diffraction analyses and microhardness tests. Results showed that the boride layers consisted mainly of FeB and Fe 2 B phases. No significant difference in boride layer thicknesses (average 140 μm) could be observed as a function of ZrB 2 content. The needle-like morphology of the boride layer became more prominent with increasing weight fraction of ZrB 2 in the boriding powders. The average microhardness of the boride layer decreased with increasing ZrB 2 content due to changes in the morphology of the boride layer.