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目的:对不同表面处理方式粗化的氧化锆陶瓷进行表面形态学观察和粗糙度测量。方法:制作氧化锆瓷片,分为4组接受不同的表面处理(A:氧化铝喷砂;B:摩擦化学法硅涂层;C:热H2SO4/(NH4)2SO4蚀刻;D:热HF/HNO3蚀刻)。扫描电镜(SEM)观察氧化铝砂砾、Cojet砂砾、以及4种表面处理的氧化锆瓷片表面的形态,分别以三维景深显微镜和原子力显微镜测量各组瓷片的表面粗糙度。测量结果进行统计分析。结果:A、B组瓷片呈现了类似的表面粗化形态;C、D组瓷片高倍SEM视野下呈现了更好的粗化结构。粗糙度测量结果及统计分析显示,微米级粗糙度大小依次为,C组>A组、B组>D组(P<0.05);纳米级粗糙度大小依次为,C、D组>A、B组(P<0.05)。结论:热酸蚀刻对氧化锆陶瓷提供了更好的纳米级表面粗糙度和表面粗化结构。
Objective: To observe the surface morphology and roughness of zirconia ceramics with different surface treatment methods. Methods: Zirconia ceramic tiles were made and were divided into 4 groups and subjected to different surface treatments (A: alumina sandblasting; B: tribochemical chemical coating of silicon; C: hot H2SO4 / (NH4) 2SO4 etching; D: hot HF / HNO3 etching). Scanning electron microscopy (SEM) was used to observe the surface morphology of alumina grit, Cojet gravel, and four kinds of surface-treated zirconia ceramic tiles. The surface roughness of each group of tiles was measured by three-dimensional depth of field microscope and atomic force microscope, respectively. Measurement results for statistical analysis. Results: A, B group of porcelain showed a similar surface roughening morphology; C, D group porcelain high magnification SEM visual field showed a better coarsening structure. Roughness measurement results and statistical analysis showed that the order of the micron roughness was C> A, B> D (P <0.05) Group (P <0.05). Conclusion: Hot-acid etching provides better nanoscale surface roughness and surface roughening of zirconia ceramics.