ISSN:
1433-075X
Keywords:
Key words Ti3SiC2
;
Fluctuation synthesis
;
Lattice constants
;
In-situ liquid phase
;
Crystallite shape
;
Growth direction
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract A novel fluctuation method for the synthesis of Ti3SiC2 powders was developed. The raw materials used in this process are Ti, Si, and graphite powders. Fluctuation synthesis utilized Si as in-situ liquid forming phase (additive), which was formed by heating the powder mixtures to 1300°C and using the heat released from the exothermic reaction for Ti3SiC2 formation. The result demonstrated that the reaction time for the formation of Ti3SiC2 was dramatically shortened using fluctuation method and the powders produced using this method contained more than twice amount of Ti3SiC2 compared to the solid reaction synthesized powders. The powders prepared by fluctuation method are fiber-like in morphology with dimensions of 0.8–2 µm in width and 5–10 µm in length. The growth direction of the fiber-like Ti3SiC2 particulate is {101–1}*. The lattice parameters for Ti3SiC2 were determined by a trial-and-error method and are a=3.067 Å and c=17.645 Å.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100190050090
Permalink
