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KMID : 1023420090090010075
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Journal of Dental Hygiene Science
2009 Volume.9 No. 1 p.75 ~ p.81
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Effect of Glass Frit on the Sintering Behavior and Mechanical Properties of 3Y-ZrO2
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Lee Gyu-Sun
Kwon Eun-Ja
Lee Chae-Hyun
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Abstract
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The effect of glass frit on the sintering behavior and mechanical properties of 3 mol% Y2O3-doped zirconia(3Y-ZrO2) have been studied. Up to 30 wt% of glass frit was added to 3Y-ZrO2. Sintering was performed in a box furnace up to 1300oC for specimens with glass frit and 1600oC for specimens without glass frit in air for 1h. Relative density and mechanical properties were measured to investigate the effect of glass frit. The addition of glass frit enhanced both sintered density and mechanical properties of 3Y-ZrO2 which is suitable for dental applications. Maximum sintered density 93.3% of theoretical density was obtained with the specimens containing 30 wt% frit sintered at 1300oC, whereas the optimum amount of frit addition for mechanical properties was determined as 10 wt%. Maximum value of strength, fracture toughness, and Vickers microhardness for specimens with glass frit were 206 MPa, 3.4 MPa m1/2, and 5.3 GPa, respectively.
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KEYWORD
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3Y-ZrO2, Sintering behavior, Mechanical properties
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