Study of the influence of mechanical activation on the structure and properties of ceramics FeV50-Cr-Ti- Hf- N
The influence of mechanical activation on the formation process of composite particles of the FeV50-Cr-Ti-Hf system of pressed FeV50-Cr-Ti-Hf samples during combustion in a nitrogen environment under high pressure conditions was investigated. Based on the obtained X-ray diffraction analysis data, it was established that a mechanical activation duration of 2 hours is optimal for obtaining composite particles with a component ratio close to the stoichiometric one. Moreover, deviations from the stoichiometric ratio for Hf and FeV are less than 5 wt. %, and for Ti and Cr - less than 2 wt. %, while maintaining an unchanged phase composition. Mechanical tests of hot-pressed samples obtained as a result of the synthesis of a mixture with an optimal mechanical activation time showed that the hardness of such samples reaches 1858 ± 50 HV with an ultimate flexural strength of 363 ± 18 MPa. The authors declare no conflicts of interests.
Keywords
ceramics,
self-propagating high-temperature synthesis,
structure,
phase composition,
hardnessAuthors
| Evseev Nikolay S. | Tomsk State University | evseevns@gmail.com |
| Khrustalev Anton P. | Tomsk State University | tofik0014@gmail.com |
| Belchikov Ivan A. | Tomsk State University | ivan70422@gmail.com |
| Khmeleva Marina G. | Tomsk State University | khmelevamg@gmail.com |
| Zhukov Ilya A. | Tomsk State University | gofra930@gmail.com |
Всего: 5
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