Effect of precursor mass on product phase composition in plasma dynamic synthesis of tungsten carbide; Journal of Physics: Conference Series; Vol. 830 : Energy Fluxes and Radiation Effects 2016
| Parent link: | Journal of Physics: Conference Series Vol. 830 : Energy Fluxes and Radiation Effects 2016.— 2017.— [012119, 5 p.] |
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| Institution som forfatter: | |
| Andre forfattere: | , , , |
| Summary: | Title screen An interest in WC[1-x] cubic tungsten carbide results from its catalytic properties similar to those of platinum group metals and the synergistic effect between WC[1-x] and Pt in reactions of hydrogen evolution and hydrogen oxidation. However, according to the phase diagram of the W–C system, the cubic phase WC[1-x] only exists in a narrow range of temperature stability (about 2798–3058 K), which makes it difficult for being obtained. To date, there are different methods for synthesizing tungsten carbide powder with a low content of cubic phase that complicates the study of WC[1-x] properties. A direct plasma dynamic synthesis is known as one of the promising methods to produce WC[1-x]. The aim of this work is to find the optimal amount of tungsten precursor to obtain cubic tungsten carbide with a high purity by plasma dynamic method. The synthesized products were examined by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns showed that the main phase was cubic tungsten carbide with negligible content of hexagonal tungsten carbide W[2]C and pure tungsten W. According to a quantitative analysis of synthesized products, which were obtained using masses of initial tungsten equal to 1.0, 0.7, 0.6 and 0.5 gram, the yield of WC[1-x] phase was 84, 89, 95 and 92 wt%, respectively. The results of TEM displayed that the synthesized powders consist of crystallites, having the size less than 100 nm (WC[1-x]), and a carbon matrix. This carbon was not detected in XRD due to its presence as an amorphous phase. |
| Sprog: | engelsk |
| Udgivet: |
2017
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| Serier: | Modification of materials with particle beams and plasma flows |
| Fag: | |
| Online adgang: | http://dx.doi.org/10.1088/1742-6596/830/1/012119 http://earchive.tpu.ru/handle/11683/39497 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=654942 |
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| 200 | 1 | |a Effect of precursor mass on product phase composition in plasma dynamic synthesis of tungsten carbide |f K. N. Shatrova [et al.] | |
| 203 | |a Text |c electronic | ||
| 225 | 1 | |a Modification of materials with particle beams and plasma flows | |
| 300 | |a Title screen | ||
| 320 | |a [References: 12 tit.] | ||
| 330 | |a An interest in WC[1-x] cubic tungsten carbide results from its catalytic properties similar to those of platinum group metals and the synergistic effect between WC[1-x] and Pt in reactions of hydrogen evolution and hydrogen oxidation. However, according to the phase diagram of the W–C system, the cubic phase WC[1-x] only exists in a narrow range of temperature stability (about 2798–3058 K), which makes it difficult for being obtained. To date, there are different methods for synthesizing tungsten carbide powder with a low content of cubic phase that complicates the study of WC[1-x] properties. A direct plasma dynamic synthesis is known as one of the promising methods to produce WC[1-x]. The aim of this work is to find the optimal amount of tungsten precursor to obtain cubic tungsten carbide with a high purity by plasma dynamic method. The synthesized products were examined by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns showed that the main phase was cubic tungsten carbide with negligible content of hexagonal tungsten carbide W[2]C and pure tungsten W. According to a quantitative analysis of synthesized products, which were obtained using masses of initial tungsten equal to 1.0, 0.7, 0.6 and 0.5 gram, the yield of WC[1-x] phase was 84, 89, 95 and 92 wt%, respectively. The results of TEM displayed that the synthesized powders consist of crystallites, having the size less than 100 nm (WC[1-x]), and a carbon matrix. This carbon was not detected in XRD due to its presence as an amorphous phase. | ||
| 461 | 0 | |0 (RuTPU)RU\TPU\network\3526 |t Journal of Physics: Conference Series | |
| 463 | 0 | |0 (RuTPU)RU\TPU\network\20593 |t Vol. 830 : Energy Fluxes and Radiation Effects 2016 |o 5th International Congress, 2–7 October 2016, Tomsk, Russian Federation |o [materials] |f National Research Tomsk Polytechnic University (TPU) ; eds. M. V. Trigub G. E. Osokin ; A. S. Konovod |v [012119, 5 p.] |d 2017 | |
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| 701 | 1 | |a Shatrova |b K. N. | |
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| 701 | 1 | |a Saigash |b A. S. |c Specialist in the field of electric power engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1981- |g Anastasiya Sergeevna |3 (RuTPU)RU\TPU\pers\32274 |9 16263 | |
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