12211-03-9Relevant articles and documents
Structure and electrical transport property of a silicopnictide ZrCuSiP
Abe,Yoshii
, p. 372 - 374 (2002)
A silicopnictide ZrCuSiP was prepared through the reaction between ZrCuSi alloy and red phosphor in evacuated quartz ampoules. Rietveld analysis of the powder X-ray diffraction pattern revealed that ZrCuSiP has the ZrCuSiAs-type structure (P4/nmm) with the lattice constants of a = 0.35671(1) nm and c = 0.94460(4) nm. Electrical resistivity measurements at temperatures from 5 to 300 K indicated that ZrCuSiP is a metallic compound.
Reactive hot pressing of ZrC - SiC ceramics at low temperature
Wang, Xin-Gang,Zhang, Guo-Jun,Xue, Jia-Xiang,Tang, Yun,Huang, Xiao,Xu, Chang-Ming,Wang, Pei-Ling
, p. 32 - 36 (2013)
Composites of ZrC-SiC with relative densities in excess of 98% were prepared by reactive hot pressing of ZrC and Si at temperature as low as 1600°C. The reaction between ZrC and Si resulted in the formation of ZrC1-x, SiC, and ZrSi. Low-tempera
New criteria for the applicability of combustion synthesis: The investigation of thermodynamic and kinetic processes for binary Chemical Reactions
Tan, Xiaoming,Su, Xianli,Yan, Yonggao,Uher, Ctirad,Zhang, Qingjie,Tang, Xinfeng
supporting information, (2021/01/07)
Combustion synthesis is a novel technique that utilizes the exothermic heat of a chemical reaction to maintain the reaction and to rapidly prepare materials. But, hitherto, none of unified criterion for the validation of combustion synthesis has been proposed. Herein, we proposed the conditions need to be met. In terms of kinetics, at the adiabatic temperature (Tad), the diffusion distance of atoms (lTad) within 0.1 s should be larger than the particle size of the reactants(d), that is, lTad≥d. For systems that satisfy Tad/Tm,L≥1(where Tm,L is the melting point of the low-melting point component of the reactants), the presence of a liquid phase significantly increases the atomic diffusion distance from nanometers to tens of microns, making the criterion lTad≥d simplified to Tad/Tm,L≥1 in most situations. In terms of thermodynamics, the system needs to ensure that the reaction components are in an activated state, that is, Tad/Tm,H ≥0.7, where Tm,H is the melting point of the high-melting point component. The criteria for the SHS reactions proposed in this study further improve the theoretical understanding of SHS reactions, and provide guidance for exploring the ultra-fast synthesis of binary and multicomponent compounds.
