Synthesis and properties of nanoscale titanium boride

6th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering

工业技术;经济学

Efimova, K.A.^1 ; Galevskiy, G.V.^1 ; Rudneva, V.V.^1

Siberian State Industrial University, ul. Kirova 42, Novokuznetsk

654007, Russia^1

关键词: Chemical compositions;    Constituent elements;    Kinetic conditions;    Physical and mechanical performance;    Protective properties;    Technological applications;    Technology variations;    Titanium diboride;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/91/1/012002/pdf
DOI  :  10.1088/1757-899X/91/1/012002

学科分类：工业工程学

来源: IOP

【 摘 要 】

This work reports the scientific and technological grounds for plasma synthesis of titanium diboride, including thermodynamic and kinetic conditions of boride formation when titanium and titanium dioxide are interacting with products resulting from boron gasification in the nitrogen - hydrogen plasma flow, and two variations of its behavior using the powder mixtures: titanium - boron and titanium dioxide - boron. To study these technology variations, the mathematical models were derived, describing the relation between element contents in the synthesized products of titanium and free boron and basic parameters. The probable mechanism proposed for forming titanium diboride according to a "vapour - melt - crystal" pattern was examined, covering condensation of titanium vapour in the form of aerosol, boriding of nanoscale melt droplets by boron hydrides and crystallization of titanium - boron melt. The comprehensive physical - chemical certification of titanium diboride was carried out, including the study of its crystal structure, phase and chemical composition, dispersion, morphology and particle oxidation. Technological application prospects for use of titanium diboride nanoscale powder as constituent element in the wettable coating for carbon cathodes having excellent physical and mechanical performance and protective properties.