Abstract
The structural stability of SCS-6 filament was investigated in the temperature interval 1000â1600 °C by differential scanning calorimetry (DSC) and in situ X-ray diffraction techniques. It was found that this filament is composed mostly of the cubic ÎČ polytype of SiC and of graphite, and that these phases are stable in the temperature interval studied. The lattice parameter for ÎČ-SiC was determined between room temperature and 1600°C, and the calculated average linear thermal expansion of the lattice in this temperature interval (5.24 Ă 10â6 °Câ1 is in agreement with macroscopic thermal expansion measurements on single filaments. Thermal events observed by DSC occur at 1380 °C on heating and at 1300°C on cooling, and are suggested as being related to the melting and solidification, respectively, of excess silicon. These results are analysed in relation to the anomalous thermal expansion behavior exhibited by this filament.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
