Characterization and surface treatment effects on topography of a glass-infiltrated alumina/zirconia-reinforced ceramic
Characterization and surface treatment effects on topography of a glass-infiltrated alumina/zirconia-reinforced ceramic
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DOI：
10.1016/j.dental.2006.06.043
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发表时间：
2007-06-01
期刊：
影响因子：
5
通讯作者：
Mecholsky, John J., Jr.
中科院分区：
文献类型：
--
作者：
Bona, Alvaro Della;Donasollo, Tiago A.;Mecholsky, John J., Jr.
Objective.表征玻璃渗透氧化铝/氧化锆增强陶瓷（IZ）的微观结构、组成和一些物理性能以及表面处理对形貌的影响。根据ISO 6872说明书制造IZ陶瓷样品，并通过1 μ m氧化铝磨料抛光。采用扫描电子显微镜（SEM）、背散射成像（BSI）、电子色散谱（EDS）和体视学进行定量和定性分析。使用超声波测定弹性模量（E）和泊松比（v），使用氦比重瓶测定密度（p）。使用以下陶瓷表面处理：AP-抛光;用9.5%氢氟酸HF-蚀刻90秒;用25 μ m氧化铝颗粒SB-喷砂15秒和用二氧化硅改性的30 μ m氧化铝颗粒SC-喷砂15秒（二氧化硅涂层）。用光学轮廓仪检测表面粗糙度（Ra），用SEM-EDS检测表面二氧化硅含量。IZ平均性能值如下：rho = 4.45 +/- 0.01 g/cm（3）; 0.26和E = 245 GPa。AP和HF治疗的IZ的平均Ra值相似，但SC或SB治疗后显著增加（p
Objective. Characterize the microstructure, composition and some physical properties of a glass-infiltrated alumina/zirconia-reinforced ceramic (IZ) and the effect of surface treatment on topography.Methods. IZ ceramic specimens were fabricated according to ISO6872 instructions and polished through 1 mu m alumina abrasive. Quantitative and qualitative analyses were performed using scanning electron microscopy (SEM), backscattered imaging (BSI), electron dispersive spectroscopy (EDS) and stereology. The elastic modulus (E) and Poisson's ratio (v) were determined using ultrasonic waves, and the density (p) using a helium pycnometer. The following ceramic surface treatments were used: AP-as-polished; HF-etching with 9.5% hydrofluoric acid for 90 s; SB-sandblasting with 25 mu m aluminum oxide particles for 15 s and SC-blasting with 30 mu m aluminum oxide particles modified by silica (silica coating) for 15 s. An optical profilometer was used to examine the surface roughness (Ra) and SEM-EDS were used to measure the amount of silica after all treatments.Results. The IZ mean property values were as follows: rho = 4.45 +/- 0.01 g/cm(3); 0.26 and E = 245 GPa. Mean Ra values were similar for AP- and HF-treated IZ but significantly increased after either SC or SB treatment (p