scholarly journals Processing and characterization of amorphous magnesium based alloy for application in biomedical implants

2014 ◽  
Vol 3 (3) ◽  
pp. 203-209 ◽  
Author(s):  
Telma Blanco Matias ◽  
Gabriel Hitoshi Asato ◽  
Bruno Torquato Ramasco ◽  
Walter José Botta ◽  
Claudio Shyinti Kiminami ◽  
...  
Keyword(s):  
Biomedical Implants

Characterization of In- and Near-Body Radio Frequency Transmission Loss for Biomedical Implants

2013 ◽  
Vol 3 (1) ◽  
pp. 112-119 ◽  
Author(s):  
Xianming Qing ◽  
Terence Shie Ping See ◽  
Zhi Ning Chen ◽  
Tat Meng Chiam ◽  
. Nasimuddin ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Transmission Loss ◽  
Biomedical Implants

scholarly journals Microstructural Characterization of Micro-Textured Titanium Surfaces

2000 ◽  
Author(s):  
W. O. Soboyejo ◽  
C. Mercer ◽  
S. Allameh ◽  
B. Nemetski ◽  
N. Marcantonio ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Laser Processing ◽  
Mammalian Cells ◽  
Microstructural Characterization ◽  
Biomedical Implants ◽  
Textured Surfaces ◽  
Force Microscopy ◽  
Transmission Electron ◽  
Titanium Surfaces

Abstract This paper presents the results of a multi-scale microstructural characterization of micro-textured Ti-6Al-4V surfaces that are used in biomedical implants. The hierarchies of substructural and microstructural features associated with laser micro-texturing, polishing and surface blasting with alumina pellets are elucidated via atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and optical microscopy (OM). The nano-scale roughness profiles associated with the different surface textures are elucidated via AFM. Sub-micron precipitates and dislocation substructures associated with wrought processing and laser processing are revealed by TEM. Micro- and meso-scale images of the groove structures are then discussed using OM and SEM. The implications of the results are discussed for the optimization of laser processing schemes for the fabrication of micro-textured surfaces that will facilitate the self organization of proteins, and the attachment of mammalian cells to the Ti-6Al-4V surfaces in biomedical implants.

scholarly journals Synthesis and Characterization of Multilayered Diamond Coatings for Biomedical Implants

Materials ◽  
2011 ◽  
Vol 4 (5) ◽  
pp. 857-868 ◽  
Author(s):  
Leigh Booth ◽  
Shane A. Catledge ◽  
Dustin Nolen ◽  
Raymond G. Thompson ◽  
Yogesh K. Vohra
Keyword(s):  
Synthesis And Characterization ◽  
Biomedical Implants ◽  
Diamond Coatings

scholarly journals Characterization of the Micro-Abrasive Wear in Coatings of TaC-HfC/Au for Biomedical Implants

Materials ◽  
2017 ◽  
Vol 10 (8) ◽  
pp. 842 ◽  
Author(s):  
Pablo Guzmán ◽  
Luis Yate ◽  
Mercy Sandoval ◽  
Jose Caballero ◽  
Willian Aperador
Keyword(s):  
Abrasive Wear ◽  
Biomedical Implants

Non-invasive Characterization of Immune Responses to Biomedical Implants

2015 ◽  
Vol 44 (3) ◽  
pp. 693-704 ◽  
Author(s):  
Jun Zhou ◽  
Wenjing Hu ◽  
Liping Tang
Keyword(s):  
Immune Responses ◽  
Biomedical Implants ◽  
Non Invasive

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

Characterization of Coherent, Ordered Precipitates in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 144-145
Author(s):  
B. H. Kear ◽  
J. M. Oblak
Keyword(s):  
Stable Phase ◽  
Nickel Base Superalloy ◽  
Alloy 718 ◽  
Commercial Alloy ◽  
Precipitate Morphology ◽  
Continuous Precipitation ◽  
Nickel Base ◽  
Base Superalloy ◽  
Strengthening Precipitate

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.

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