A novel preparation of Zr–Si intermetallics by electrochemical reduction of ZrSiO4 in molten salts. (26th October 2015)

• Record Type: Journal Article
• Authors: Liu, Hongxia; Cai, Yanqing; Xu, Qian; Song, Qiushi; Liu, Huijun
• Is Part Of: New journal of chemistry. Volume 39:Number 12(2015:Dec.)
• Page Start: 9969
• Page End: 9975
• Publication Date: 2015-10-26
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c5nj01896j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Zr–Si intermetallics with a designed composition were prepared by direct electrochemical reduction of ZrSiO4 and SiO2 in one step. Abstract : A method of controllably preparing Zr–Si intermetallics by the electrochemical reduction of ZrSiO4 and ZrSiO4 –SiO2 mixed powders in molten CaCl2 –NaCl at 800 °C is developed. The final product composition can be controlled by adjusting the molar ratio of Si to Zr in the starting material, and ZrSi, ZrSi2 and their mixture were obtained by this process. The reduction pathway of ZrSiO4 and SiO2 to Zr–Si intermetallics involves several calcium-containing intermediate phases, such as CaSiO3, Ca2 SiO4, and calcia-stabilized zirconia (CSZ).