Effects of a carbothermal reduction reaction on the microstructure of nano-silicon nitride ceramics

Horng Hwa Lu, Yi Chi Huang, Alex C. Lee, Jow Lay Huang

研究成果: Article

2 引文 斯高帕斯(Scopus)

摘要

In this study, using amorphous nano-Si3N4 as the starting powder, the oxides on the Si3N4 powder surface were removed by carbothermal reduction to prevent the formation of the O′-sialon phase in the sintered product. The results indicate that carbothermal reduction can be effectively induced at 1250 °C and produce single-phase Si3N4. However, as the temperature increased, the liquid phase that formed during Si3N4 sintering began to impede the carbothermal reduction. Analysis revealed that when the temperature exceeded 1350 °C, the reaction gradually shifted from that of carbothermal reduction to that of decomposition, and residual carbon and O′-sialon phase were observed in the sintered product.

原文English
頁(從 - 到)14313-14317
頁數5
期刊Ceramics International
40
發行號9 PART A
DOIs
出版狀態Published - 2014 一月 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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