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Preparation and characterization of ZCAP blends
W G Billotte1, G M Mehrotra, D B Reynolds
1Wright State University, BHE Department, Dayton, Ohio 45435, USA.
Biomedical Sciences Instrumentation
|January 1, 1995
Summary
Six zinc oxide, calcium oxide, and phosphorous pentoxide (ZCAP) blends were synthesized and characterized. X-ray diffraction revealed incomplete reactions in some blends, with beta-3CaO.P2O5 and alpha-CaZn2(PO4)2 compositions being prevalent.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Solid-State Chemistry
Background:
- Zinc oxide (ZnO), calcium oxide (CaO), and phosphorous pentoxide (P2O5) are key components in various material applications.
- Understanding the phase formation and reaction completion in ZCAP blends is crucial for optimizing material properties.
Purpose of the Study:
- To prepare and characterize six different weight-based blends of ZnO, CaO, and P2O5.
- To investigate the reaction products and completeness of synthesis in ZCAP powder mixtures.
Main Methods:
- Preparation of six ZCAP blends with varying weight ratios (e.g., 50:30:20, 48:32:20).
- Calcination of mixed powders at 800°C for 12 hours.
- Characterization of the resulting blends using X-ray diffraction (XRD).
Main Results:
- XRD analysis indicated that the reactions between the oxides did not always go to completion.
- The prevalent compositions identified in multiple blends were beta-3CaO.P2O5 and alpha-CaZn2(PO4)2.
- Specific blend ratios influenced the resulting phase compositions.
Conclusions:
- The synthesis of ZCAP materials involves complex reactions that may not reach full completion under the studied conditions.
- Beta-3CaO.P2O5 and alpha-CaZn2(PO4)2 are significant phases formed in these ZCAP systems.
- Further optimization of synthesis parameters may be necessary to achieve desired phase purity.