Journal ArticleDOI
Nano-hardness, wear resistance and pseudoelasticity of hafnium implanted NiTi shape memory alloy.
TLDR
Hf implanted NiTi exhibited larger pseudoelastic recovery strain and retained better surface integrity even after being strained to 10% as demonstrated by in situ scanning electron microscope observation.Abstract:
NiTi shape memory alloy was modified by Hf ion implantation to improve its wear resistance and surface integrity against deformation. The Auger electron spectroscopy and x-ray photoelectron spectroscopy results indicated that the oxide thickness of NiTi alloy was increased by the formation of TiO2/HfO2 nanofilm on the surface. The nano-hardness measured by nano-indentation was decreased even at the depth larger than the maximum reach of the implanted Hf ion. The lower coefficient of friction with much longer fretting time indicated the remarkable improvement of wear resistance of Hf implanted NiTi, especially for the sample with a moderate incident dose. The formation of TiO2/HfO2 nanofilm with larger thickness and decrease of the nano-hardness played important roles in the improvement of wear resistance. Moreover, Hf implanted NiTi exhibited larger pseudoelastic recovery strain and retained better surface integrity even after being strained to 10% as demonstrated by in situ scanning electron microscope observation.read more
Citations
More filters
Journal ArticleDOI
Synthesis and characterization of hafnium oxide nanoparticles for bio-safety
Venkatachalam Jayaraman,Ganesan Bhavesh,Shanmugavel Chinnathambi,Singaravelu Ganesan,Prakasarao Aruna +4 more
Journal ArticleDOI
Tantalum implanted entangled porous titanium promotes surface osseointegration and bone ingrowth.
Qi Wang,Yuqin Qiao,Mengqi Cheng,Guo-feng Jiang,Guo He,Yunsu Chen,Xianlong Zhang,Xuanyong Liu +7 more
TL;DR: Ta-implanted entangled porous titanium (EPT) can be developed as one of the highly efficient graft material for bone reconstruction situations by overcoming the bioinertia of Ti by plasma immersion ion implantation & deposition (PIII&D).
Journal ArticleDOI
Improvement on corrosion resistance and biocompability of ZK60 magnesium alloy by carboxyl ion implantation
TL;DR: In this paper, a carboxyl ion (COOH+) implantation method was introduced to reduce the degradation of ZK60 Mg alloy and improve its functionality in physiological environment.
Journal ArticleDOI
Surface and mechanical properties of modified porous titanium scaffold
TL;DR: In this paper, the effect of the time of thermal oxidation at 600°C on apatite formation and mechanical properties of the porous titanium scaffold was studied, and the results of thin film X-ray diffraction and Raman spectroscopy indicated that the surface of heat treated samples up to 480min was mainly covered by rutile.
Journal ArticleDOI
Effects of femtosecond laser shock peening in distilled water on the surface characterizations of NiTi shape memory alloy
TL;DR: In this article, femtosecond laser shock peening (FLSP) was applied to NiTi shape memory alloy to modify its surface characterizations, including surface topography, microhardness, microstructure and scratch testing.
References
More filters
Journal ArticleDOI
Ti based biomaterials, the ultimate choice for orthopaedic implants – A review
TL;DR: In this paper, the influence of alloy chemistry, thermomechanical processing and surface condition on these properties is discussed and various surface modification techniques to achieve superior biocompatibility, higher wear and corrosion resistance.
Journal ArticleDOI
Mechanical biocompatibilities of titanium alloys for biomedical applications.
TL;DR: The following are described with regard to biomedical applications of titanium alloys: the Young's modulus, wear properties, notch fatigue strength, fatigue behaviour on relation to ageing treatment, and multifunctional deformation behaviours of Titanium alloys.
Journal ArticleDOI
Biocompatibility and osteogenesis of refractory metal implants, titanium, hafnium, niobium, tantalum and rhenium.
TL;DR: Results indicate that titanium, hafnium, niobium, tantalum and rhenium have good biocompatibility and osteoconductivity.
Journal ArticleDOI
Ion implantation in semiconductors—Part II: Damage production and annealing
TL;DR: In this article, a qualitative description of the damage produced by an implanted ion is presented, followed by a partial inventory of the basic defects that are found in ion-implanted silicon, where theoretical predictions are compared to a variety of experimental data.
Book
Handbook of plasma immersion ion implantation and deposition
TL;DR: This work presents a meta-analysis of Plasma Immersion Ion Implantation and Thin-Film Deposition, and its applications in Nonsemiconductor Applications of PIII&D and Materials Characterization and Testing Methods.