The influence of calcium oxide addition on the content of combustion products of aluminium nanopowder in air
Development of new methods for synthesis of nitrides of the alkaline and alkaline-earth elements is currently relevant because these nitrides, and nitrides of other metals are commonly used in industry. The aim of this work was to determine the phase structure of products of combustion in air of alu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2019-05-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/1454 |
| Summary: | Development of new methods for synthesis of nitrides of the alkaline and alkaline-earth elements is currently relevant because these nitrides, and nitrides of other metals are commonly used in industry. The aim of this work was to determine the phase structure of products of combustion in air of aluminum nanopowder with calcium oxide mixtures. To perform qualitative and quantitative phase analysis the X-ray diffraction (diffractometer DRON-3,0) was used; for calculations of the chemical activity parameters of mixtures and determination of their ignition ability the differential thermal analysis (termoanalyzer SDT Q600 of Scientific Analytical Center of TPU) was used; to determine the microstructure of the initial materials and products of synthesis the electron microscopic analysis (electron microscopes Jeol-840 and Hitachi SU8000) was used. The results of chemical activity parameters of mixes investigation showed that the mixes of aluminum nanopowder with calcium oxide are not pyrophoric. Furthermore, it was established that in combustion products of aluminum nanopowder with calcium oxide mixes containing 50 and 75 wt. % of CaO, the crystal phase of calcium nitride Ca3N2 presumably is formed. Stabilization of this phase is caused by lower combustion temperature of these samples in comparison with the samples containing less calcium oxide. |
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| ISSN: | 2500-1019 2413-1830 |