摘要
热力学计算结果表明 ,氧化硅的临界成核半径为 2 .8nm.由起伏引起的核胚如果小于 2 .8nm则不会形成晶核而继续生长 .上述热力学分析虽然是半理想化的 ,但是非常有效 .可以找到这样一个体系 ,其溶液条件不发生均匀成核 ,而是异相表面成核 .
The critical nucleation radius is 2.8 nm obtained from calculation with thermodynamic method. If the nucleus caused by fluctuation is less than 2.8 nm, the nucleus will not grow up. Though the thermodynamic analysis is semi ideal, it is effective. We find a solution system in which the nucleation does not take place uniformly, but does on the surfaces of different solid phases. It gives a feasibility theoretically for titanate being coated uniformly with silica nanofilm and a single phase of silica not being formed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第9期1543-1545,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 (批准号 :198740 76 )资助
