Spontaneous Formation of Titanium Nitride on the Surface of a Ti Rod Induced by Electro-Discharge-Heat-Treatment in an N2 Atmosphere
| Autor: | Y. H. Kim, Wonmok Lee, Jung-Yeul Kim, Y. K. Lee, Si Young Chang, Y. H. Yoon |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lcsh:TN1-997
Materials science Diffusion chemistry.chemical_element 02 engineering and technology Heat treatment Atmosphere chemistry.chemical_compound Surface modification X-ray photoelectron spectroscopy XPS lcsh:TA401-492 lcsh:Mining engineering. Metallurgy Titanium 020502 materials Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Titanium nitride 0205 materials engineering chemistry lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology |
| Zdroj: | Archives of Metallurgy and Materials, Vol 62, Iss 2, Pp 1281-1285 (2017) |
| ISSN: | 2300-1909 |
| Popis: | A single pulse of 2.0 to 3.5 kJ of input energy from a 450 mF capacitor was applied to a commercially pure Ti rod in a N2atmosphere. The surface of the Ti rod transformed from TiO2into titanium nitride in times as short as 159 msec, providing a bimodal morphology of the cross-section. A much higher value of hardness that was observed at the edge of the cross-section was attributed to nitrogen-induced solid-solution hardening that occurred during the electrical discharge process. The activation energy (Ea) for the diffusion process was estimated to be approximately 86.9 kJ/mol. Results show that the electrical discharge process is a possible potential method for the nitriding of Ti; advantages include a short processing time and control of the nitrided layer without dimensional changes. |
| Databáze: | OpenAIRE |
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