TY - JOUR

T1 - Si and N K-XANES spectroscopic study of novel Si-C-N ceramics

AU - Franke, R.

AU - Bender, S.

AU - Pavlychev, A. A.

AU - Kroll, P.

AU - Riedel, R.

AU - Greiner, A.

PY - 1998/11/1

Y1 - 1998/11/1

N2 - X-ray absorption near edge structure (XANES) measurements at the Si and N K-edges of ternary Si-C-N compounds are applied to analyze the changes of structural units owing to the thermally induced ceramization of silicon dicarbodiimide Si(N=C=N)2 at temperatures up to 1600°C. Samples synthesized below 800°C show an environment of silicon consisting of carbodiimide (N=C=N) groups. Further annealing leads to a crystalline phase, Si2CN4, which combines the structural units (Si-N-Si) and (Si-N=C=N). Recorded spectra of samples annealed at temperatures higher than 1200°C show the decomposition of Si2CN4. The material then transforms to a Si3N4-SiC composite material through an intermediate amorphous Si-C-N phase.

AB - X-ray absorption near edge structure (XANES) measurements at the Si and N K-edges of ternary Si-C-N compounds are applied to analyze the changes of structural units owing to the thermally induced ceramization of silicon dicarbodiimide Si(N=C=N)2 at temperatures up to 1600°C. Samples synthesized below 800°C show an environment of silicon consisting of carbodiimide (N=C=N) groups. Further annealing leads to a crystalline phase, Si2CN4, which combines the structural units (Si-N-Si) and (Si-N=C=N). Recorded spectra of samples annealed at temperatures higher than 1200°C show the decomposition of Si2CN4. The material then transforms to a Si3N4-SiC composite material through an intermediate amorphous Si-C-N phase.

KW - SiCN ceramics

KW - XANES

UR - http://www.scopus.com/inward/record.url?scp=0001069105&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001069105

VL - 96

SP - 253

EP - 257

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

SN - 0368-2048

IS - 1-3

ER -