摘要
本文通过对比实验，分别以（1）天然石英粉（2）硅酸钠（3）碳酸钠与天然石英粉（4）活性SiO2等为原料合成氮氧化硅（Si2N2O）粉末。实验结果表明：直接碳热还原氨化天然石英粉，难以合成Si2N2O。而以（2）、（3）两种原料虽然能合成效纯的Si2N2O粉末，且工艺简单，但原料中SiO2含量太低，应用价值不大。而用活性SiO2为原料，能合成较高纯度的Si2N2O，尽管工艺较（2）、（3）复杂，但此法工业应用前景大。
Used various of sources of SiO2, Si2N2O was prepared by carbothermal reduction and nitridation of SiO2. Thesesoures of SiO2 were: (A)natural quartz powder; (B) Na2SiO3; (C) natural quartz powder mixed Na2CO3, and (D) ac-tivated SiO2. The following conclussions could be obtained by comparing the experiment results: (1) It is difficult tosynthesize Si2N2O from Source (A); (2) Although the process in which Source (B) was used would be simplier andthe purity of Si2N2O synthesized by using Source (C) would be higher, it was difficult to synthesize Si2N2O fromSource (B) and (C) in industry, because the SiO2 contents in Source (B) and (C) were too low; (3) Not only thepurity of Si2N2O synthesized from activated SiO2 would be higher, but also the synthesizing process was more valu-able in industrial application, although the process was more difficult than both process in which deurce (A) and (B)were used, respectively.
出处
《陶瓷学报》
CAS
1997年第3期154-157,共4页
Journal of Ceramics
基金
国家自然科学基金
