ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
To avoid microcrack formation caused by the addition of heterogeneous sintering aids, nanohydroxyapatite powder was prepared by precipitation method and doped into commercialhydroxyapatite powders as homogeneous sintering aid. Gelcasting method was used to prepare thesehydroxyapatite green bodies. Densification of the blended powder was performed by pressurelesssintering in air atmosphere at the range 1100℃ to 1400℃ for 2h, with a step size of 50℃. Theresults showed that the nano particle can greatly improve the densification process of the greenbodies, and at 1300℃, which is the highest sintering temperature for hydroxyapatite withoutdecomposition in the air atmosphere, the relative sintering densities of the doped green bodies and theones without doping were 93.99% and 83.13% respectively
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.89.pdf
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