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Synthesis of α-SiC(6H) using 6H polytype SiC diluent by the seeding technique

✍ Scribed by H.H. Nersisyan; Y.B. Hou; C.W. Won

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
505 KB
Volume
189
Category
Article
ISSN
0032-5910

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✦ Synopsis

The feasibility of α-SiC(6H) polytype synthesizing from the SiO 2 + 2Mg + C mixture by a traditional combustion synthesis process is demonstrated using an iterative method, called the seeding technique. Using this method the effect of an addition of commercial α-SiC(6H) powder on the SiO 2 + 2Mg + C combustion synthesis system was investigated. The formation of α-SiC(6H) polytype in the reaction products has been confirmed by X-ray diffraction technique. The optimal conditions to obtain phase pure α-SiC(6H) having crystalline shape and a size about 0.5-1 µm have been demonstrated through the seeding technique.

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