陕西科技大学学报（自然科学版）2007，Vol.25Issue(1)：26-31,6.
超声场对碳酸钙反应结晶成核影响的研究
EFFECT OF ULTRASOUND ON THE NUCLEATION OF CALCIUM CARBONATE DURING REACTIVE CRYSTALLIZATION
摘要
Abstract
The effect of ultrasound on reactive crystallization is studied by measuring the induction time. Calcium carbonate is used as the working substance precipitated by mixing CaCl2 and Na2CO3/NaHCO3 solutions. The experiments were carried with various frequencies and insonation time. It is observed that the induction time significantly decreases with increasing insonation time. The mechanismof the ultrasonic effect on nucleation is analyzed.The two effects of ultrasound are discussed. The surface tension (γ) decreased and the diffusion coefficient (DAB) increased in the ultrasound. The induction time reduced after ultrasound treating.关键词
超声场/诱导期/结晶/成核Key words
ultrasound/ induction time/ crystallization/ nucleation分类
轻工纺织引用本文复制引用
杭方学,卢群,丘泰球,姚成灿..超声场对碳酸钙反应结晶成核影响的研究[J].陕西科技大学学报（自然科学版）,2007,25(1):26-31,6.基金项目
广东省自然科学基金(980534),广东省重点科技项目(99M02002G) （980534）
