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《Materials for Mechanical Engineering》 2018-04
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Influence of Oxide Colorant on Chromaticity and Mechanical Properties of 3Y-TZP Ceramics

WANG Xingming;WANG Huanping;LIU Siqi;YANG Qinghua;LEI Ruoshan;XIAO Zhen;XU Shiqing;College of Materials Science and Engineering,China Jiliang University;  
3 Y-TZP ceramics were sintered at 1 500 ℃ for 2 hby adding different mass fractions of oxide colorant powders of Fe_2O_3,Pr_6O_(11),Er_2O_3,CeO_2,respectively,to yttrium-stabilized tetragonal zirconia(3 YTZP)powder.The influence of different oxide colorants on the coloring and mechanical properties of 3 Y-TZP ceramics was discussed.The results show that after the addition of the oxide colorants,the main crystal phase of the ceramics was still tetragonal zirconia,and the crystal grains were closely packed with an average grain size of 200-500 nm.With the increase of the colorant addition,the flexural strength of all the ceramics decreased,but was maintained above 800 MPa,meeting the requirements of clinical dental restoration materials.The ceramics with the four oxide colorants had a uniform surface color and the color difference between the upper and down side was small.The color of the ceramics was yellow with addition of Fe_2O_3,Pr_6O_(11) or CeO_2 and pink with addition of Er_2O_3.The influence of the addition of Fe_2O_3 and Er_2O_3 on the value of a*of the ceramics was relatively great,and the addition of Pr_6O_(11) and CeO_2 affected the value of b*greatly.
【Fund】: 浙江省自然科学基金重点资助项目(LZ14B010001)
【CateGory Index】: TQ174.1
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