State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
J Biomater Appl. 2012 Aug;27(2):113-8. doi: 10.1177/0885328210393047. Epub 2011 Jan 27.
Surface mechanical attrition treatment (SMAT) was used to fabricate nanocrystalline surface layers on the commercial purity titanium. X-ray diffraction and transmission electron microscopy results indicate that the top layer contained nanograins. Enhanced strength and microhardness were achieved due to the surface nanostructure. Cell culture tests have shown a greater adhered cell density and more extensively spreading morphologies of Saos-2 cells on the SMAT substrates compared to those on the as-received Ti counterparts. Enhanced cell viability and cell cycle were also achieved on the SMAT Ti substrates. These could be attributed to the nanostructure grains with the increased surface hydrophilicity and roughness on the SMAT Ti.
表面机械研磨处理（SMAT）被用于在商用纯钛上制备纳米晶表面层。X 射线衍射和透射电子显微镜结果表明，顶层含有纳米晶粒。由于表面纳米结构，强度和显微硬度得到提高。细胞培养试验表明，与原始 Ti 相比，Saos-2 细胞在 SMAT 基底上的黏附细胞密度更大，形态扩展更广。SMAT Ti 基底上的细胞活力和细胞周期也得到了增强。这可能归因于纳米结构晶粒以及 SMAT Ti 表面亲水性和粗糙度的增加。
