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Curing behavior, phase compositions and microstructure of magnesium potassium phosphate chemically bonded ceramics with different solid-to-solid ratios
Wang Aijuan * #,Yuan Zhilong
School of Material Science and Engineering, Xi'an University of Technology
*Correspondence author
#Submitted by
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Funding: The natural science foundation of Shaanxi Province（No.2012JQ6009）, Doctoral Fund of Ministry of Education of China （No.No. 20106118120013）
Opened online:30 September 2013
Accepted by: none
Citation: Wang Aijuan,Yuan Zhilong.Curing behavior, phase compositions and microstructure of magnesium potassium phosphate chemically bonded ceramics with different solid-to-solid ratios[OL]. [30 September 2013] http://en.paper.edu.cn/en_releasepaper/content/4561513
 
 
Magnesium potassium phosphate chemically bonded ceramics have been applied into the biomedical field. In this work, the curing behavior, phase compositions and microstructure of magnesium potassium phosphate chemically bonded ceramics with different solid-to-solid (i.e. MgO : KH2PO4) ratios were investigated. The setting time was determined using automatic Vicat instrument. The temperature variation on the surface was recorded using infrared radiation thermometer. X-ray diffractometer was applied to characterize its phase compositions. The microstructures were imaged using a scanning electron microscope. The results showed that the setting time decreased as the increase of solid-to-solid ratio during the solidifying process. The maximum temperature increased with the solid-to-solid ratio. Phase compositions were different among the samples prepared with different solid-to-solid ratios. KH2PO4, MgO and hydrated product existed in the samples with lower solid-to-solid ratio because of the incomplete reaction, and numerous acicular polycrystals were found. There were only residual MgO and hydrated product existed in the samples with the higher solid-to-solid ratio. Besides, a gelatinous structure with lots of cracks was also found. Therefore, the properties of MPCBC could be controlled by changing the solid-to-solid ratio.
Keywords:magnesium potassium phosphate chemically bonded ceramics; curing behavior; phase composition; microstructure; solid-to-solid ratios.
 
 
 

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