Surface chemical species investigation by FT-IR spectrometry and surface modific

2020-03-30 07:46:27

FT carbon hydrogen surface chemical

责任者: Baraton, MI;Chang, W;Kear, BH 单位: RUTGERS STATE UNIV,DEPT MECH & MAT SCI,PISCATAWAY,NJ 08855. 来源出处: JOURNAL OF PHYSICAL CHEMISTRY, v 100, OCT 10 1996, p 16647- 16652 摘要: The surface of a nanosized silicon carbonitride powder synthesized by chemical vapor condensation from hexamethyldisilazane was analyzed by FT-IR spectrometry. Several chemical species were identified, and their behavior toward probe molecules was studied. Deuterium and methanol additions brought evidence of open pores. A slight oxidation led to pore coalescence and strong modifications in the chemical composition of the first atomic layer even though a complete silica coverage was not reached. Moreover, the SiCN surface further nitrided by ammonia addition at high temperature appeared to have, under those conditions, a behavior different from the silicon carbide surface. 关键词: carbon clusters; field evaporation; graphite; scanning tunneling microscopy microscopy; NANOSTRUCTURED CERAMIC POWDERS; SILICON-CARBIDE; STRETCHING VIBRATIONS; HYDROGEN; NITRIDE; ALLOYS; CARBON; OXIDE; RAMAN; FILMS HYDROGEN; NITRIDE; ALLOYS; CARBON; OXIDE; RAMAN; FILMS