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Preparation of Electrically Conductive Calcium Phosphate Composite Foams by Particle-Stabilized Emulsion Route

Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan
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Ceramics 2018, 1(2), 319-328; https://doi.org/10.3390/ceramics1020025
Received: 4 September 2018 / Revised: 18 October 2018 / Accepted: 26 October 2018 / Published: 28 October 2018
Macroporous composite foams consisting of β-tricalcium phosphate (β-TCP) and titanium nitride (TiN) have been prepared by a facile emulsion route involving sintering at elevated temperatures after shaping. Commercially available hydroxyapatite and titanium particles are used as the starting material; to which, the surface of the particles has been modified by preferential adsorption of hexadecylamine to change from hydrophilic to hydrophobic character in water. This renders stable air-in-water emulsions from the particle-filled suspensions by simple mechanical frothing. Sintered β-TCP/TiN foams with a porosity of 65–70%, pore size of 20–2000 nm, and three-point rupture strength of 25–43 kPa have been obtained. Electrical resistance has been found to reduce pronouncedly when the initial titanium loading exceeds 15 vol.% for the composite foams sintered at 1000 °C under reducing nitrogen-hydrogen atmosphere. View Full-Text
Keywords: foam; tricalcium phosphate; titanium nitride; composite; emulsion foam; tricalcium phosphate; titanium nitride; composite; emulsion
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Tseng, W.J.; Kao, W.-H. Preparation of Electrically Conductive Calcium Phosphate Composite Foams by Particle-Stabilized Emulsion Route. Ceramics 2018, 1, 319-328.

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