INVESTIGATION OF SURFACE PROPERTIES AND FeB-Fe2B LAYER FORMATION IN PACK BORONIZING OF CEMENTATION STEEL

TEKER T., Sari M.

SURFACE REVIEW AND LETTERS, cilt.29, sa.09, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 09
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1142/s0218625x22501220
  • Dergi Adı: SURFACE REVIEW AND LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Boronizing, cementation steel, surface roughness, layer thickness, MECHANICAL-PROPERTIES, WEAR-RESISTANCE, BORIDE LAYERS, BEHAVIOR, GROWTH, IRON, MICROSTRUCTURE, DIFFUSION, FEB/FE2B
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

In this study, cementation steel was boronized at 1050 degrees C for 6 h, 8 h, and 10 h. Microstructural change on the surface of the samples after boronization was detected by optical microscope (OM), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-Ray diffraction (XRD), and electron back scatter diffraction (EBSD) analyses. Also, surface roughness, microhardness, and layer thickness were measured. FeB, Fe2B phases, and saw tooth morphology expected in iron-based metals during boring process occurred in the entire process time. The average layer thickness of the boronized samples at 1050 degrees C for 10 h was measured as 222 mu m and the surface roughness value was 3.40 mu m. The hardness of boride phases acquired on the samples varied between 1700 HV and 1730 HV. As a result, while the ratio of chromium carbide is the highest in the base metal, the boron level was the highest in the coating. Compounds 49 wt.% Cr7C3 and 47 wt.% B were identified as the most intensely concentrated.