title: Surface nanomechanical behavior of ZrN and ZrCN films deposited on NiTi shape memory alloy by magnetron sputtering.
abstract: Surface nanomechanical behavior under nanoindentation of ZrN and ZrCN film on NiTi substrate was studied. The surface hardness and modulus of the films increase initially with larger nanoindentation depths and then reach their maximum values. Afterwards, they diminish gradually and finally reaching plateau values which are the composite modulus and composite hardness derived from the ZrN/ZrCN film and NiTi substrate. They are higher than those of electropolished NiTi SMA due to the properties of ZrN and ZrCN. In comparison, the surface nanomechanical properties of electropolished NiTi exhibit a different change with depths.
authors.affiliation: School of Materials Science and Engineering and Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University Nanjing 211189, China.
authors.forename: C L
authors.initials: CL
authors.lastname: Chu
authors.forename: H L
authors.initials: HL
authors.lastname: Ji
authors.forename: C
authors.initials: C
authors.lastname: Guo
authors.forename: X B
authors.initials: XB
authors.lastname: Sheng
authors.forename: Y S
authors.initials: YS
authors.lastname: Dong
authors.forename: P H
authors.initials: PH
authors.lastname: Lin
authors.forename: T
authors.initials: T
authors.lastname: Hu
authors.forename: P K
authors.initials: PK
authors.lastname: Chu