Tailoring the damping and mechanical properties of porous NiTi by a phase leaching process

2021 ◽  
Vol 855 ◽  
pp. 157471 ◽  
Author(s):  
Mi Zhao ◽  
Yuman Shao ◽  
Weijie Zheng ◽  
Yonghua Luo ◽  
Jichao Qiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Porous Niti ◽  
Leaching Process

Evaluation of Surface Macrostructure and Mechanical Properties of Porous Surface Ti-HA Biomaterial Fabricated by a Leaching Process

2010 ◽  
Vol 48 (04) ◽  
pp. 369-375 ◽  
Author(s):  
Kee Do Woo ◽  
Duck Soo Kang ◽  
Min Seok Moon ◽  
Sang Hyuk Kim ◽  
Zhiguang Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Porous Surface ◽  
Leaching Process

Fabrication and Surface Modification of Porous Nano-Structured NiTi Orthopedic Scaffolds for Bone Implants

2009 ◽  
Vol 1181 ◽  
Author(s):  
Shuilin Wu ◽  
Xiangmei Liu ◽  
Paul K Chu ◽  
Tao Hu ◽  
Kelvin Wai Kwok Yeung ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Shape Memory ◽  
Porous Ceramics ◽  
Bone Implants ◽  
Nickel Ion ◽  
Niti Alloys ◽  
Porous Niti ◽  
Surface Areas ◽  
Good Shape

AbstractNear-equiatomic porous nickel-titanium shape memory alloys (NiTi SMAs) are becoming one of the most promising biomaterials in bone implants because of their unique advantages over currently used biomaterials. For example, they have good mechanical properties and lower Young�s modulus relative to dense NiTi, Ti, and Ti-based alloys. Porous NiTi SMAs are relatively easy to machine compared to porous ceramics such as hydroxyapatite and calcium phosphate that tend to exhibit brittle failure. The porous structure with interconnecting open pores can also allow tissue in-growth and favors bone osseointegration. In addition, porous NiTi alloys remain exhibiting good shape memory effect (SME) and superelasticity (SE) similar to dense NiTi alloys. To optimize porous NiTi SMAs in bone implant applications, the current research focuses on the fabrication methods and surface modification techniques in order to obtain adjustable bone-like structures with good mechanical properties, excellent superelasticity, as well as bioactive passivation on the entire exposed surface areas to block nickel ion leaching and enhance the surface biological activity. This invited paper describes progress in the fabrication of the porous materials and our recent work on surface nanorization of porous NiTi scaffolds in bone grafts applications.

Microstructure, mechanical properties and superelasticity of biomedical porous NiTi alloy prepared by microwave sintering

2015 ◽  
Vol 46 ◽  
pp. 387-393 ◽  
Author(s):  
J.L. Xu ◽  
L.Z. Bao ◽  
A.H. Liu ◽  
X.J. Jin ◽  
Y.X. Tong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Niti Alloy ◽  
Microwave Sintering ◽  
Porous Niti

Mechanical Properties of Highly Porous NiTi Alloys

2011 ◽  
Vol 20 (4-5) ◽  
pp. 522-528 ◽  
Author(s):  
Martin Bram ◽  
Manuel Köhl ◽  
Hans Peter Buchkremer ◽  
Detlev Stöver
Keyword(s):  
Mechanical Properties ◽  
Niti Alloys ◽  
Porous Niti ◽  
Highly Porous

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

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