Journal article
Microwave sintering of calcium phosphate ceramics
Materials Science & Engineering C, Vol.29(4), pp.1144-1149
2009
Handle:
https://hdl.handle.net/2376/114704
Abstract
Microwave sintering of hydroxyapatite (HAP) and tri-calcium phosphate (TCP) ceramics were studied using a commercial 2.45 GHz, 3 KW fully automated microwave system. Four different powder compositions, apart from pure HAP and TCP, were prepared with small amount of different oxide additives e.g., magnesium oxide, zinc oxide and titanium oxide. All samples were densified at 1250 °C for 30 min. Sintered samples had high density and homogeneous microstructure for all compositions. Phase analysis using XRD showed no major variations from starting materials. Presence of additives increased compressive strength between 100 and 200%. Fractured surfaces showed clear signs of intergranular fracture in undoped HAP and TCP while in doped samples, fracture modes were either transgranular or mixed mode. In comparison to conventional sintering, microwave sintering of calcium phosphate ceramics was found to be economically exciting due to substantial reduction in processing time and energy expenditure due to volumetric heating of samples.
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Details
- Title
- Microwave sintering of calcium phosphate ceramics
- Creators
- Abhijit Chanda - Department of Mechanical Engineering, Jadavpur University, Kolkata-700032, IndiaSudip Dasgupta - W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USASusmita Bose - W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USAAmit Bandyopadhyay - W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
- Publication Details
- Materials Science & Engineering C, Vol.29(4), pp.1144-1149
- Academic Unit
- Mechanical and Materials Engineering, School of
- Publisher
- Elsevier B.V
- Identifiers
- 99900548303101842
- Language
- English
- Resource Type
- Journal article