升温速率对氧化锆陶瓷透光性的影响

Effects of Heating Rate on Transparency of Zirconia Ceramic

目的:研究烧结过程中升温速率对四方多晶纳米氧化锆陶瓷透明度和全透射率的影响。方法:采用不同的升温速率,对氧化锆陶瓷坯体进行烧结,按烧结速率,分为H1组(100℃/h);H2组(200℃/h);H4组(400℃/h);H6组(600℃/h)。采用分光光度计检测陶瓷片的透光率和全光透过率,分析比较升温速率及晶粒大小与材料透光性能的相关性。结果:采用100℃/h的升温速率,材料的透光率最高,显著高于其它温度烧结的试件(P<0.05)。结论:采用100℃/h的升温速率的氧化锆陶瓷具有最佳的透光性能。

Objective：To study the effects of heating rate on microstructure and transparent property of zirconia ceramic.Methods：Samples were divided into 4 groups according to heating rates：group H1（100℃/h）;group H2（200℃/h）;group H4（400℃/h）;group H6（600℃/h）.Transparency parameter（TP） and total transmittance（TT） were measured by Xrite spectrophotometer.By testing the grain size of the testing sample,the relationship between the heating rate and the transparency of ceramic were evaluated.Results：When the heating rate was 100℃/h,the transparent property of zirconia was significant better than the others（P0.05）.Conclusion：The zirconia ceramic shows good transparent property when the heating rate was 100℃/h.