title: Enhanced mechanical properties and in vitro cell response of surface mechanical attrition treated pure titanium.
abstract: 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.
authors.affiliation: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
authors.forename: Changli
authors.initials: C
authors.lastname: Zhao
authors.forename: Pei
authors.initials: P
authors.lastname: Han
authors.forename: Weiping
authors.initials: W
authors.lastname: Ji
authors.forename: Xiaonong
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry* / Q000378:metabolism; D002448:Cell Adhesion; D002453:Cell Cycle; D045744:Cell Line, Tumor; D002470:Cell Survival; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010006:Osteoblasts / Q000166:cytology*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000378:metabolism; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D014025:Titanium