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MAX PHASES BY REACTIVE FLASH SINTERING AND A METHOD FOR ULTRAFAST SYNTHESIS THEREOF
The present invention discloses a novel flash sintering process for synthesis of MAX phases, namely, but not limited to Ti2SnC and Ti3SiC2 in an extremely short time. The process is a combustion synthesis where a relatively low voltage in a range of 20-60 V/cm is applied using a DC/AC power source across the compact precursor material prior to ignition. The flash event is observed with a quick rise in current flow in a range of 100-300 mA/mm2 followed by measured temperature range of 1200-1400° C. in a green compact body of different MAX phase compositions. The process of the present invention enables the synthesis of MAX phases in air by suppressing oxidation of the material because of the very short residence time of the flashing event. In addition, the present invention focuses on synthesis of MAX phase in bulk to serve as the starting material for the development of two-dimensional MXenes.
MAX PHASES BY REACTIVE FLASH SINTERING AND A METHOD FOR ULTRAFAST SYNTHESIS THEREOF
The present invention discloses a novel flash sintering process for synthesis of MAX phases, namely, but not limited to Ti2SnC and Ti3SiC2 in an extremely short time. The process is a combustion synthesis where a relatively low voltage in a range of 20-60 V/cm is applied using a DC/AC power source across the compact precursor material prior to ignition. The flash event is observed with a quick rise in current flow in a range of 100-300 mA/mm2 followed by measured temperature range of 1200-1400° C. in a green compact body of different MAX phase compositions. The process of the present invention enables the synthesis of MAX phases in air by suppressing oxidation of the material because of the very short residence time of the flashing event. In addition, the present invention focuses on synthesis of MAX phase in bulk to serve as the starting material for the development of two-dimensional MXenes.
MAX PHASES BY REACTIVE FLASH SINTERING AND A METHOD FOR ULTRAFAST SYNTHESIS THEREOF
BESRA LAXMIDHAR (author) / KIRAN NUWULA USHA (author) / CHOUDHARY BISHNU (author) / CHATTERJEE SRIPARNA (author)
2024-08-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
MAX PHASES BY REACTIVE FLASH SINTERING AND A METHOD FOR ULTRAFAST SYNTHESIS THEREOF
| European Patent Office | 2022