Structural Characterization of Boro-Titanized AISI 1040 Steel

O. Kon, S. Pazarlıoğlu, M. Durmaz, U. Sen, S. Sen
2015 Acta Physica Polonica. A  
In this study, boro-titanizing treatment was applied to AISI 1040 steel. In the coating treatment, steel samples were pre-boronized in a slurry salt bath consisting of borax, boric acid and ferro-silicon at 900 • C for 2 h, then titanized by thermo-reactive deposition technique (TRD) in a powder mixture consisting of ferro-titanium, ammonium chloride, alumina and naphthalene at 1000 • C for 14 h. The coated samples were characterized by Xray diraction analysis (XRD), scanning electron
more » ... electron microscope (SEM), glow discharge optical emission spectroscopy (GDOES) and micro-hardness tests. Coated layer formed on the pre-boronized AISI 1040 steel was compact and homogeneous. X-ray studies showed that the phases formed on the steel surfaces are TiB2, TiC, TiN and Fe2B. The depth of the coating layer ranged from 3.41 ± 0.47 µm to 6.59 ± 0.51 µm, depending on treatment time. A higher treatment time resulted in a thicker boro-titanized layer. The average hardness of the coating layer was 4527 ± 284 HV0.005.
doi:10.12693/aphyspola.127.1211 fatcat:di2towegvbex5pda4pfekcn7am