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Spark-plasma method with the high-load pressing for the mullite‒TiC‒TiN materials preparation and the material's properties
https://doi.org/10.17073/1683-4518-2018-5-39-45
Abstract
The phase composition of the synthesized TiC and TiN powders and the properties of the mullite‒TiC‒TiN samples with different TiC and TiN ratio were investigated. The samples have been sintered by means of the spark-plasma method within 1200‒1600 оС under the pressing load of 75 MPa. In the range within 1200 and 1600 °C the intense mullitization was observed in the samples with the different TiC and TiN ratio. The TiC concentration growth in the sintered samples and respectively the TiN concentration reducing at 1500 °C give rise to the dense-sintered crystal structure consisting of numerous mullite crystals, TiC and partially TiN, forming out of the solutions. Within 1400‒1600 °С the samples' relative density and the linear shrinkage gradually grow the open porosity decreasing, at the same time the samples' elasticity modulus, Vickers hardness number and ultimate compression strength increase under compression. Ill. 6. Ref. 10. Tab. 1.
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Supplementary files
For citation: Hmelov A.V. Spark-plasma method with the high-load pressing for the mullite‒TiC‒TiN materials preparation and the material's properties. NOVYE OGNEUPORY (NEW REFRACTORIES). 2018;(5):39-45. https://doi.org/10.17073/1683-4518-2018-5-39-45
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