Bulk Iodoapatite Ceramic Densified by Spark Plasma Sintering with Exceptional Thermal Stability. Issue 8 (16th July 2014)

• Record Type: Journal Article
• Authors: Yao, Tiankai; Lu, Fengyuan; Sun, Hongtao; Wang, Jianwei; Ewing, Rodney C.; Lian, Jie; Ballarini, R.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 8(2014)
• Page Start: 2409
• Page End: 2412
• Publication Date: 2014-07-16
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.13101
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace13101-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Iodoapatite powder prepared by high‐energy ball milling is densified by Spark Plasma Sintering to ~96% theoretical density. X‐ray Diffraction and First‐principle Calculation indicates the sintered phase is iodine‐deficient apatite with chemical composition of Pb_9.85(VO₄)₆I_1.7 and iodine confinement over 8 wt%. Thermogravimetric analysis shows the bulk iodoapatite displays exceptionally stability without iodine release until 670°C. The greatly improved iodine confinement can be attributed to the dense matrix upon rapid consolidation from highly activated powders by mechanical attrition.</p> </abstract>