scholarly journals Electrochemical comparative study on corrosion behavior of conventional and powder metallurgy titanium alloys in physiological conditions

2017 ◽  
Vol 72 (2) ◽  
pp. 118-123 ◽  
Author(s):  
J. Ureña ◽  
E. Gordo ◽  
E. Ruiz-Navas ◽  
N. Vilaboa ◽  
L. Saldaña ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Comparative Study ◽  
Titanium Alloys ◽  
Corrosion Behavior ◽  
Physiological Conditions

scholarly journals A comparative study of silver nanoparticle dissolution under physiological conditions

2020 ◽  
Vol 2 (12) ◽  
pp. 5760-5768
Author(s):  
Lukas Steinmetz ◽  
Christoph Geers ◽  
Sandor Balog ◽  
Mathias Bonmarin ◽  
Laura Rodriguez-Lorenzo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Comparative Study ◽  
Silver Nanoparticle ◽  
Biologically Relevant ◽  
Physiological Conditions ◽  
Aggregation Behaviour

The dissolution and aggregation behaviour of silver nanoparticles under physiological conditions and in biologically relevant environments is investigated by exploiting their plasmonic properties.

scholarly journals Role of carbon and nitrogen in the improvement of corrosion resistance of new powder metallurgy Co-Cr-Mo alloys

2020 ◽  
Vol 38 (3) ◽  
pp. 273-286 ◽  
Author(s):  
Cristina Garcia-Cabezon ◽  
Celia Garcia-Hernandez ◽  
Maria L. Rodriguez-Mendez ◽  
Gemma Herranz ◽  
Fernando Martin-Pedrosa
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Powder Metallurgy ◽  
Nitrogen Content ◽  
Powder Metallurgy Technique ◽  
Carbon And Nitrogen ◽  
Physiological Conditions ◽  
Carbon And Nitrogen Content ◽  
Astm F75

AbstractMicrostructural changes that result in relevant improvements in mechanical properties and electrochemical behavior can be induced using different sintering conditions of ASTM F75 cobalt alloys during their processing using powder metallurgy technique. It has been observed that the increase in carbon and nitrogen content improves corrosion resistance and mechanical properties as long as the precipitation of carbides and nitrides is avoided, thanks to the use of rapid cooling in water after the sintering stage. In addition, the reduction of the particle size of the powder improves hardness and resistance to corrosion in both acid medium with chlorides and phosphate-buffered medium that simulates the physiological conditions for its use as a biomaterial. These results lead to increased knowledge of the role of carbon and nitrogen content in the behavior displayed by the different alloys studied.

Fracture Toughness of Powder Metallurgy and Ingot Titanium Alloys – A Review

2013 ◽  
Vol 551 ◽  
pp. 143-160 ◽  
Author(s):  
Ajit Pal Singh ◽  
Brian Gabbitas ◽  
De Liang Zhang
Keyword(s):  
Fracture Toughness ◽  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Alloy Composition ◽  
Low Cost ◽  
Ingot Metallurgy ◽  
Metal Powders ◽  
Critical Factors ◽  
Microstructural Characteristics ◽  
High Degree

Powder metallurgy (PM) is potentially capable of producing homogeneous titanium alloys at relative low cost compared to ingot metallurgy (IM). There are many established PM methods for consolidating metal powders to near net shapes with a high degree of freedom in alloy composition and resulting microstructural characteristics. The mechanical properties of titanium and its alloys processed using a powder metallurgical route have been studied in great detail; one major concern is that ductility and toughness of materials produced by a PM route are often lower than those of corresponding IM materials. The aim of this paper is to review the fracture toughness of both PM and IM titanium alloys. The effects of critical factors such as interstitial impurities, microstructural features and heat treatment on fracture toughness are also discussed

Preparation of Titanium Alloy Parts by Powder Compact Extrusion of a Powder Mixture and Scaled up Manufacture

2016 ◽  
Vol 704 ◽  
pp. 75-84 ◽  
Author(s):  
Fei Yang ◽  
Brian Gabbitas ◽  
Ajit Pal Singh ◽  
Stella Raynova ◽  
Hui Yang Lu ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Powder Mixture ◽  
Powder Compact ◽  
Blended Elemental ◽  
Pilot Plant Scale ◽  
Near Net Shape ◽  
Titanium Processing ◽  
The University

Blended Elemental Powder Metallurgy (BE-PM) is a very attractive method for producing titanium alloys, which can be near-net shape formed with compositional freedom. However, a minimization of oxygen pick-up during processing into manufactured parts is a big challenge for powder metallurgy of titanium alloys. In this paper, different approaches for preparing titanium alloy parts by powder compact extrusion with 0.05-0.1wt.% of oxygen pick-up during manufacturing are discussed. The starting materials were a powder mixture of HDH titanium powder, other elemental powders and a master alloy powder. Different titanium alloys and composites, such as Ti-6Al-4V, Ti-4Al-4Sn-4Mo-0.5Si, Ti-5Al-5V-5Mo-3Cr, and Ti-5Al-5V-5Mo-3Cr-5vol%TiB, with different profiles such as round and rectangular bars, a wedge profile, wire and tubes have been successfully manufactured on a laboratory and pilot-plant scale. Furthermore, a possible route for scaling up the titanium processing capabilities in the University of Waikato has also been discussed.

Comparative study of hematopoietic stem and progenitor cells between sexes in mice under physiological conditions along time

2017 ◽  
Vol 41 (12) ◽  
pp. 1399-1405
Author(s):  
Samanta Gasco ◽  
Amaya Rando ◽  
Pilar Zaragoza ◽  
Alberto García-Redondo ◽  
Ana Cristina Calvo ◽  
...  
Keyword(s):  
Comparative Study ◽  
Progenitor Cells ◽  
Hematopoietic Stem ◽  
Physiological Conditions ◽  
Stem And Progenitor Cells

scholarly journals Corrosion Behavior of Pure Titanium and Titanium Alloys in Fluoride-containing Solutions.

2001 ◽  
Vol 20 (4) ◽  
pp. 305-314 ◽  
Author(s):  
Masaharu NAKAGAWA ◽  
Shigeki MATSUYA ◽  
Koich UDOH
Keyword(s):  
Titanium Alloys ◽  
Corrosion Behavior ◽  
Pure Titanium
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