表面粗糙度对烤瓷上釉效果的影响  

Effects of different surface roughness prior to overglazing on final surface texture of glazed ceramic

作　　者：蓝巧瑛[1] 阳佳兴[1] 袁艺[1] 覃峰[1] 

机构地区：[1]中山大学光华口腔医院修复科,广州510055

出　　处：《中华医学美学美容杂志》2011年第3期200-203,共4页Chinese Journal of Medical Aesthetics and Cosmetology

摘　　要：目的 观察上釉前陶瓷不同的表面粗糙度对其上釉后最终表面光洁度的影响.方法 将5组（n=12）烤瓷试件在注水条件下用碳化硅砂纸分别逐级打磨至220^#、320^#、600^#、800^#和1200^#,常规上釉.上釉前、后分别测量表面粗糙度Ra,扫描电子显微镜定性分析表面形貌.结果 1200^#砂纸打磨后上釉获得的表面最光滑（Ra=0.19μm）,220^#砂纸打磨后上釉的试件表面最粗糙（Ra=0.55μm）,各组陶瓷上釉前后的表面粗糙度差异具有统计学意义（P〈0.05）;扫描电子显微镜分析结果 与粗糙度仪测试结果 一致.结论 上釉前应对烤瓷表面进行细磨、抛光,以便在上釉后获得尽量光滑的表面.Objective To evaluate the influence of different surface roughness on final surface texture of glazed ceramic. Methods Sixty porcelain discs were fabricated and randomly divided into five groups （n=12）, which were sequentially grounded with water-cooled sandpapers of decreasing abrasiveness （220^# , 400^# , 600^# , 800^# and 1200^# grit）, and then all the specimens were glazed. Before and after glazing, the surface roughness （Ra） μm of the same specimens were evaluated quantitatively with profilometer and qualitatively using scanning electron microscopy （SEM）. Results The smoothest surfaces were obtained with 1 200^# sandpapers griting prior to overglazing （Ra =0. 19 μm）,and 220^# sandpapers griting prior to overglazing displayed the roughest surfaces （Ra =0. 55 μm） ; each group displayed significant difference before and after glazing （P 〈 0. 05）. The images obtained through SEM were consistent with the profilometer readings. Conclusions The results suggest that decreasing the surface roughness of dental ceramic prior to glazing is of great importance in order to obtain the smoothest surface after glazing.

关 键 词：陶瓷 粗糙度 上釉 

分 类 号：R783.1[医药卫生—口腔医学]