Abstract
Ultrafine preceramic Si/C/N composite powders have been prepared from hexamethyl-disilazane (HMDS) by laser-induced gas phase reaction, using a new kind of two-reaction-zone reactor which could efficiently increase laser efficiency and production yield compared with a one-reaction-zone reactor. The as-formed products were nanosized (50-80 nm), amorphous powders containing Si-C and Si-N bonds homogeneously mixed with some excess carbon. The production yield was in the range of 88-120 g/h. Changes of chemical composition and crystallization of the powders during heat treatment at 1350 and 1550°C under nitrogen for 1 h were studied.
| Original language | English |
|---|---|
| Pages (from-to) | 1996-2002 |
| Number of pages | 7 |
| Journal | Journal of Materials Research |
| Volume | 13 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1998 |
| Externally published | Yes |
Bibliographical note
Funding Information:This research was partially supported by the Ministry of Aviation of China. The authors wish to thank Dr. Yongdong Xu, Dr. Mingjun Li, and Ms. Jun Xue for their continuous support during the experimental work.
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering