Document Type : Full Research Paper

Authors

1 Associate Professor, Nanotechnology and Advanced Materials, Materials and Energy Research Center

2 Assistant Professor, Nanotechnology and Advanced Materials, Materials and Energy Research Center

3 BS, Pardis pajoohesh Fannavaran Yazd, BT Center, Yazd Science and Technology Park (YSTP)

4 M.Sc, Pardis pajoohesh Fannavaran Yazd, BT Center, Yazd Science and Technology Park (YSTP)

10.22041/ijbme.2013.13204

Abstract

In this research, effect of temperature and calcium to phosphorus (Ca/P) ratio of raw materials on the type and the amounts of formed phases were investigated by solid state method. Calcium carbonate and dicalcium phosphate were provided as raw materials and mixed with different percentages in a way that final (Ca/P) ratio was between 1.50 to 1.67 in different batches. Then each of these mixtures was heated at temperatures of 800 to 1200 ° C for 3 hours. Phases were identified with XRD technique and quantitative assessment of phases was evaluated by RIR method and Chung relation. Results showed that in all relations and desired temperatures sintered below 1100 ° C beta tri-calcium phosphate is the dominant phase and hydroxyapatite present as second phase in the composition. In samples which sintered at 1200° C, beta TCP is transferred significantly to alpha TCP. In samples with Ca/p ratio: 1.62, 1.67, hydroxyapatite is dominant phase at 1200° C.

Keywords

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