Use of Natural Hydroxyapatite for Coating of Titanium for Implantation

2000 ◽  
Author(s):  
Subrata Pal ◽  
Santosh N. Shinde ◽  
Sukumar Roy

Abstract It is welknown that titanium is the best biocompatiable metal available till date. Since commercially pure titanium (cpTi) has satisfactory mechanical properties, including sufficient ductility, together with a thermal expansion coefficient similar to that of hydroxyapatite, corrosion resistance and blood and tissue compatible behavior, it was selected for coating with hydroxyapatite.

Alloy Digest ◽  
2003 ◽  
Vol 52 (11) ◽  

Abstract ASTM B 367 GRADE Ti-Pd8A is commercially pure titanium casting alloy with a small palladium addition. For the most part, titanium casting alloys are based on traditional wrought product compositions. The small palladium addition to this grade improves corrosion resistance while not changing any of the physical or mechanical properties over the similarly composed commercially pure (CP) grade. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: TI-132. Producer or source: International Titanium Association.


Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  

Abstract RMI 0.2% Pd is a grade of commercially pure titanium to which up to 0.2% palladium has been added. It has a guaranteed minimum yield strength of 40,000 psi with good ductility and formability. It is recommended for corrosion resistance in the chemical industry and other places where the environment is mildly reducing or varies between oxidizing and reducing. The alloy has improved resistance to crevice corrosion at low pH and elevated temperatures. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-74. Producer or source: RMI Company.


Alloy Digest ◽  
2020 ◽  
Vol 69 (6) ◽  

Abstract UPM CP Titanium Grade 3 (UNS R50550) is an unalloyed commercially pure titanium that exhibits moderate strength (higher strength than that of Titanium Grade 2), along with excellent formability and corrosion resistance. It offers the highest ASME allowable design stress of any commercially pure grade of titanium, and can be used in continuous service up to 425 °C (800 °F) and in intermittent service up to 540 °C (1000 °F). This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-167. Producer or source: United Performance Metals.


JOM ◽  
2019 ◽  
Vol 71 (12) ◽  
pp. 4910-4916
Author(s):  
I. M. Pohrelyuk ◽  
A. G. Luk’yanenko ◽  
O. V. Tkachuk ◽  
Kh. S. Shlyahetka

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Keunhee Cho ◽  
Sung Tae Kim ◽  
Young-Hwan Park ◽  
Jeong-Rae Cho

The present study intends to provide the photoelastic coefficient and thermal expansion coefficient needed to use an FBG-embedded CFRP rod (smart rod) as strain sensor. Due to the monolithic combination of the FBG sensor with a CFRP rod, the smart rod is likely to exhibit thermal and mechanical properties differing from those of the bare FBG sensor. A tensile test showed that the photoelastic coefficient of the smart rod is 0.204, which is about 7.3% lower than the 0.22 value of the bare optical FBG. Moreover, the thermal expansion coefficient of the smart rod obtained through a thermal test appeared to be negative with a low value of −0.190×10−6/°C. Consequently, the temperature dependence of the smart rod is mainly expressed by means of the thermooptic coefficient. Compared to the bare FBG sensor, the smart rod is easier to handle and can measure compressive strains, which make it a convenient sensor for various concrete structures.


Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 798
Author(s):  
Zuzanka Trojanová ◽  
Zdeněk Drozd ◽  
Pavel Lukáč ◽  
Peter Minárik ◽  
Gergely Németh ◽  
...  

Magnesium samples reinforced with 0.7, 1.4, and 2.4 vol.% of Inconel 718 particles were prepared using a disintegrated melt deposition technique followed by hot extrusion. Mechanical properties, thermal expansion, and damping were studied with the aim of revealing the particle influence on the microstructure, texture, tensile and compressive behavior, thermal expansion coefficient, and internal friction. The flow stresses are significantly influenced by the test temperature and the vol.% of particles. A substantial asymmetry in the tensile and compressive properties was observed at lower temperatures. This asymmetry is caused by different deformation mechanisms operating in tension and compression. The fiber texture of extruded composite samples, refined grain sizes, and the increased dislocation density improved the mechanical properties. On the other hand, a decrease in the thermal expansion coefficient and internal friction was observed.


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