High-temperature reactive melt spreading: Experimental modeling of SHS reactions

International Conference on Synthesis and Consolidation of Powder Materials

Rogachev, A.S.^1 ; Vadchenko, S.G.^1 ; Illarionova, E.V.^1 ; Scheck, Yu B^1 ; Rouvimov, S.^2 ; Mukasyan, A.S.^2

Merzhanov Institute of Structural Macrokinetics and Materials Science Russian Academy of Sciences, Chernogolovka, Moscow Region

142432, Russia^1

Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame

IN

46556, United States^2

关键词: Carbon material;    Continuous layers;    Crystalline grains;    Experimental modeling;    High temperature;    Molten droplets;    Solid substrates;    Wear resistant;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/558/1/012037/pdf
DOI  :  10.1088/1757-899X/558/1/012037

来源: IOP

【 摘 要 】

Initial stages of high-temperature spreading and inreaction of molten droplets with solid substrates were experimentally investigated in the systems Ti-C and Nb-B. Thin layer of solid product (carbide, boride) crystalline grains forms immediately in the spreading frontier, while the melt infiltrates through nano-scale gaps between grains. The formation of a continuous layer of oxidation- and wear-resistant solid refractory (∼ 3000°C) product can be utilized for coating protection of refractory metals and carbon materials, as well as in high-temperature joining of carbon materials via a thin layer of titanium carbide.