Details

Autor(en) / Beteiligte

• Liu, Guanghua
• Chen, Kexin
• Li, Jiangtao

Titel

Growth mechanism of crystalline SiAlON microtubes prepared by combustion synthesis

Ist Teil von

• CrystEngComm, 2012-01, Vol.14 (17), p.5585-5588

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Crystalline SiAlON microtubes have been prepared by combustion synthesis, and the growth mechanism of the microtubes is discussed. Two mechanisms are proposed for the formation of the SiAlON microtubes, viz. accumulation of tip concave effect of rod-like crystals and side-by-side coalescence of rod-like crystals. The growth of SiAlON microtubes can be favored by the special reaction condition in combustion synthesis, which is characterized by high reaction temperatures (>1900 °C), drastic heating rates (10 3 °C s 1 ), and a high N 2 pressure of 6 MPa. The microtube is a new crystal shape of SiAlON, and an investigation on its formation mechanism increases the knowledge on crystal growth of SiAlON materials. Microtubes were produced as a new crystallization shape of SiAlON materials by combustion synthesis.