Fabrication and Characterization of a Feldspar-Alumina for Dental Ceramic

Guang Lei Zhang; Guo Qiang Qin; Yuan Hua Zhang; Pu Cheng; Chang Tao Shao

doi:10.4028/www.scientific.net/AMR.160-162.424

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Fabrication and Characterization of a Feldspar-Alumina for Dental Ceramic
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 160-162Fabrication and Characterization of a...

Fabrication and Characterization of a Feldspar-Alumina for Dental Ceramic

Abstract:

Feldspar-alumina dental ceramics were produced by impressed sintering method and characterized by X-ray diffraction and scanning electron microscope techniques. The machinability of the obtained alumina ceramics was evaluated by grinding capacity in the simulative grinding experiment. The results show that an appropriate amount of feldspar additive can reduce the sinter temperature and improve density, bending strength and machinability of alumina dental ceramics. Under 10 wt% feldspar and 1450 °C sinter temperature, the relative density and bending strength of ceramic reached 93.62% and 235MPa, respectively.