Niobium boride layers deposition on the surface AISI D2 steel by a duplex treatment
- Marmara University, Technical Education Faculty, Metal Education Department, Goztepe Campus, 34722, Istanbul/TURKEY (Turkey)
- Sakarya University, Engineering Faculty, The Department of Metallurgy and Materials Engineering, Esentepe Campus, 54187, Sakarya/Turkey (Turkey)
In this paper, we investigated the possibility of deposition of niobium boride layers on the surface of AISI D2 steel by a duplex treatment. At the first step of duplex treatment, boronizing was performed on AISI D2 steel samples at 1000{sup o}C for 2h and then pre-boronized samples niobized at 850°C, 900°C and 950°C using thermo-reactive deposition method for 1–4 h. The presence of the niobium boride layers such as NbB, NbB{sub 2} and Nb{sub 3}B{sub 4} and also iron boride phases such as FeB, Fe{sub 2}B were examined by X-ray diffraction analysis. Scanning electron microscope (SEM) and micro-hardness measurements were realized. Experimental studies showed that the depth of the coating layers increased with increasing temperature and times and also ranged from 0.42 µm to 2.43 µm, depending on treatment time and temperature. The hardness of the niobium boride layer was 2620±180 HV{sub 0.005}.
- OSTI ID:
- 22391315
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1653; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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