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1743557 
Journal Article 
Study on the synthetic process of calcium borate 
Cao, CE; Wang, YJ; Zheng, NZ; Xiong, CH; Shen, HR 
2005 
1 
Key Engineering Materials
ISSN: 1013-9826
EISSN: 1662-9795 
KEY ENGINEERING MATERIALS 
280-283 
605-608 
WOS:000227051400150 
Calcium borate used for non-pollution flux of ceramic decoration materials is synthesized by using boric acid and calcium carbonate as raw materials. The effects of reaction temperature, concentration, time, pH value and additive agent on synthesis of calcium borate are studied. The synthesized products are characterized by using DTA, XRD, TEM and SEM. The results show that the better conditions are: synthesis temperature is 80-100degreesC, the proportion of boric acid and water is 0.26 similar to 0.42 to 1(mol), the proportion of calcium carbonate and boric acid is 0.09-0.15 to 1(mol), the pH value is 5 similar to 7, reaction time is 3hs. The synthetic calcium borate is non-crystalline with particle size of 0.1 similar to 0.2 mum, when being calcinated at 300degreesC, the main crystal phase is CaO.3B(2)O(3).4H(2)O. 
calcium borate; wet synthesis; technological parameter