caa a22 4500 388022051 CHVBK 20180307124927.0 cr unu---uuuuu 161130e199807 xx s 000 0 eng 10.1557/JMR.1998.0280 doi S0884291400045167 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0280 Laser synthesis and crystallization of nanocomposite Si/C/N powder [Elektronische Daten] Ultrafine preceramic Si/C/N composite powders have been prepared from hexamethyldisilazane (HMDS) by laser-induced gas phase reaction, using a new kind of tworeaction-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. Copyright © Materials Research Society 1998 Pan Zhengwei State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China Li Hualun State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China Zhang Litong State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China Journal of Materials Research Cambridge University Press 13/7(1998-07), 1996-2002 0884-2914 13:7<1996 1998 13 JMR https://doi.org/10.1557/JMR.1998.0280 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0280 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pan Zhengwei State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China NATIONALLICENCE 700 1- Li Hualun State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China NATIONALLICENCE 700 1- Zhang Litong State Key Laboratory of Solidification Processing, Department of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/7(1998-07), 1996-2002 0884-2914 13:7<1996 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge