Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker

Journal of Inorganic Materials

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Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker

LIU Qing-Feng¹; CHEN Shou-Tian²; LIU Qian¹

1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Xi an Jiaotong University; Xi an 710049; China

Received:2001-02-14 Revised:2001-05-09 Published:2002-01-20 Online:2002-01-20

Abstract

Abstract: The effect of stir speed, reaction temperature and [Mg²⁺]/[Ca²⁺] ratio on the crys- talline habit of CaCO₃ was studied. It is shown that though the increase of reaction temperature is propitious to the formation of aragonite phase, aragonite phase cannot be formed if there is no Mg²⁺ existed in solution. Based on the detailed analysis of experimental result, it is concluded that [Mg²⁺]/[Ca²⁺] ratio is the key factor for polymorph of calcium carbonate in carbonate process.

Key words: calciumcarbonate, whisker, crystal growth

CLC Number:

O782

LIU Qing-Feng,CHEN Shou-Tian,LIU Qian. Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker[J]. Journal of Inorganic Materials.

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Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker

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