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采用生物技术进行材料表面处理是极其重要和具有诱人应用前景的方法。芦荟作为常见的草本植物,富含多种活性成分。采用OM和SEM等手段主要研究在芦荟体内植入钛合金(TC4)并在TC4表面生成草酸钙晶须这一过程。合适的植入处理时间与一定的表面粗糙度对晶须的生成数量和长度起着决定作用。通过EDS分析晶须的化学成分可得到晶须的化学式为Ca(1-x)C2O4,其中x的取值范围为0.4到0.5。在扫描电镜(SEM)下观察到晶须的长度为40～100μm,直径为2.17～5.31μm。
The use of biotechnology for material surface treatment is extremely important and has attractive application prospects. Aloe vera, a common herb, is rich in active ingredients. OM and SEM were used to study the process of implanting titanium alloy (TC4) in aloe and forming calcium oxalate whiskers on TC4 surface. Appropriate implantation time and a certain degree of surface roughness of whiskers on the number and length of play a decisive role. The chemical composition of the whiskers is analyzed by EDS to give whiskers of the formula Ca (1-x) C2O4 where x is in the range of 0.4 to 0.5. The whiskers were observed to have a length of 40-100 μm and a diameter of 2.17-5.31 μm under a scanning electron microscope (SEM).