Network distribution of molybdenum among pure titanium powders for enhanced wear properties

2020 ◽  
Author(s):  
Ridvan Yamanoglu
Keyword(s):  
Pure Titanium ◽  
Wear Properties ◽  
Titanium Powders

Sliding Wear Behavior of Remelted Al2O3-TiO2 Plasma Sprayed Coatings on Titanium

2016 ◽  
Vol 254 ◽  
pp. 231-236 ◽  
Author(s):  
Ion Dragoş Uţu ◽  
Gabriela Marginean ◽  
Iosif Hulka ◽  
Viorel Aurel Şerban
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Pure Titanium ◽  
Titanium Substrate ◽  
Atmospheric Plasma ◽  
Wear Properties ◽  
Before And After ◽  
Sprayed Coating ◽  
Pin On Disk ◽  
Sprayed Coatings

Microstructure and wear properties of the Al2O3-13.wt% TiO2 thermally sprayed coatings before and after remelting were investigated in this study. The coatings were deposited on a pure titanium substrate using the atmospheric plasma spraying (APS) process. The as-sprayed coatings were electron beam (EB) modified in order to improve their compactness and bonding strength.The effect of EB remelting on the microstructure, phase constituents and wear properties was investigated using scanning electron microscopy (SEM), X-Ray diffraction technique and hardness measurements. The sliding wear behavior was tested using a pin on disk method.The results showed that the remelting process had a positive effect removing the lamellar defect of the as-sprayed coating and improving the compactness, hardness and wear behavior.

Wear Assessment of Ti/SiC Surface Nano-Composite Layer and its Associated CP-Ti Substrate

2012 ◽  
Vol 445 ◽  
pp. 595-600 ◽  
Author(s):  
Ali Shamsipur ◽  
Seyed Farshid Kashani-Bozorg ◽  
Abbas Zarei Hanzaki
Keyword(s):  
Surface Layer ◽  
Wear Behavior ◽  
Composite Layer ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Micro Hardness ◽  
Wear Properties ◽  
Friction Stir ◽  
Pin On Disc ◽  
Cp Ti

In the present investigation, the surface of a commercially pure titanium (CP-Ti) substrate was modified to Ti/SiC nanocomposite layer employing friction stir processing technique; nanosized SiC powder was introduced into the stir zone provided by a rotating and advancing tool. The fabricated nanocomposite surface layer exhibited a micro hardness value of ~535HV which is much greater than 160HV of the substrate material using Vickers micro hardness testing. In addition, the un-treated CP-Ti substrate showed sever wear regime in the pin-on-disc test against the hardened AISI 52100 steel. It suffers extensive typical adhesive wear dominated by plastic deformation as evidenced by scanning electron microscopy. Also, deep grooves were formed, i.e. evidence of abrasive wear. Contrary to this, enhanced wear properties were detected for the Ti/SiC nanocomposite surface layer, i.e. lower coefficient of friction and weight loss. The nanocomposite surface layer was found to be adherent to the underlying substrate during the pin-on-disc test. The superior wear behavior of the nanocomposite surface layer is attributed to its improved micro hardness value due to the presence of hard nanosize SiC particles in a refined titanium matrix.

Warm Compacting Behavior of Pure Titanium Powders

2011 ◽  
Vol 189-193 ◽  
pp. 2775-2779 ◽  
Author(s):  
Shi Wen He
Keyword(s):  
Pure Titanium ◽  
Compression Force ◽  
Cold Compaction ◽  
Densification Mechanism ◽  
Warm Compaction ◽  
Ejection Force ◽  
Titanium Powders ◽  
Compacting Pressure

Warm compacting behaviors of pure titanium powders were studied. The results show that warm compaction can be applied to titanium powders. The green densities obtained through warm compaction are generally higher than obtained through cold compaction at the same pressure. The optimal warm compacting temperature is about 140 . At the compacting pressure of 500 Mpa, the ejection force of titanium powders through warm compaction is 32.4% lower than through cold compaction. At the same pressure, the effective compression force through warm compaction is bigger than one through cold compaction. In addition, the densification mechanism of warm compaction was discussed.

Wear Behaviour of Pure Ti with a Nanocrystalline Surface Layer

2011 ◽  
Vol 66-68 ◽  
pp. 1500-1504 ◽  
Author(s):  
Ming Wen ◽  
Cui'e Wen ◽  
Peter D. Hodgson ◽  
Yun Cang Li
Keyword(s):  
Grain Size ◽  
Wear Resistance ◽  
Titanium Surface ◽  
Pure Titanium ◽  
Coarse Grained ◽  
Surface Mechanical Attrition Treatment ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Microstructure Observation ◽  
Mechanical Attrition

A nanocrystalline (NC) layer with the thickness of 30 µm was produced on pure titanium surface by surface mechanical attrition treatment (SMAT). Microstructure observation indicated that the grain size increases with depth from the treated surface. The friction coefficient decreases and the wear resistance increases with the SMAT sample as compared to its coarse-grained counterpart. The improvement of the wear properties could be attributed to the higher hardness of SMAT sample.

FABRICATION AND TRIBOLOGICAL PROPERTIES OF GRADIENT FINE-GRAINED OXYGEN-BOOSTING LAYER ON ECAP-TREATED PURE TITANIUM SURFACE

2019 ◽  
Vol 26 (06) ◽  
pp. 1850199
Author(s):  
BAOSEN ZHANG ◽  
JIYING WANG ◽  
SHUAISHUAI ZHU ◽  
QIANGSHENG DONG ◽  
ZHANGZHONG WANG
Keyword(s):  
Mechanical Properties ◽  
Diffusion Process ◽  
Tribological Properties ◽  
Wear Mechanism ◽  
Titanium Surface ◽  
Pure Titanium ◽  
Coarse Grained ◽  
Wear Properties ◽  
Fine Grained ◽  
Equal Channel Angular Processing

The gradient fine-grained oxygen-boosting layer was prepared on equal channel angular processing (ECAP)-treated titanium with thermal oxidation and oxygen boost diffusion process, and tribological properties were systematically characterized. Results show that the as-prepared boosting layer consists of surface coarse-grained region, and inner fine-grained region. The corresponding thickness and mechanical properties further increase compared to those of virgin titanium. The oxygen-boosting layer reveals excellent anti-wear properties, the dominant wear mechanism of which is abrasive.

Titanium Powder Processing with Binder Addition for Biomedical Applications

2005 ◽  
Vol 498-499 ◽  
pp. 173-178 ◽  
Author(s):  
Marize Varella de Oliveira ◽  
L.C Pereira ◽  
Carlos Alberto Alves Cairo
Keyword(s):  
Biomedical Applications ◽  
Powder Processing ◽  
Pure Titanium ◽  
Porous Structures ◽  
Porous Coatings ◽  
Surgical Implants ◽  
Titanium Powders ◽  
Strong Attachment ◽  
Porosity Characterization

Porous structures are applied as coatings in order to improve surgical implants bone fixation by allowing the mechanical interlocking of the pores and bone. Sintered titanium porous coatings have been used for surgical implants because they have a strong attachment of the coating to the substrate. This works reports the processing and characterization of titanium porous coatings and foam samples, for surgical implants applications. Pure titanium powders mixed with urea as a binder was used for the porous coatings and foam samples. A rod shape of Ti-6Al-7Nb alloy P/M sample was used as substrate. Coatings surfaces were analyzed via scanning electron microscopy and the porosity characterization was made by quantitative metallografic analysis. It was found that coating porosity can be controlled by adjusting the binder percent addition and powder sizes. Sintered samples exhibited a microstructure with micropores and inteconnected macropores which is suitable to be used in surgical implants.

Comparison of wear properties of commercially pure titanium prepared by selective laser melting and casting processes

2015 ◽  
Vol 142 ◽  
pp. 38-41 ◽  
Author(s):  
H. Attar ◽  
K.G. Prashanth ◽  
A.K. Chaubey ◽  
M. Calin ◽  
L.C. Zhang ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Wear Properties ◽  
Laser Melting ◽  
Commercially Pure

Characterization of Titanium Powders Processed at Different Temperatures

2014 ◽  
Vol 802 ◽  
pp. 512-517
Author(s):  
A.A. Ribeiro ◽  
R.M. Balestra ◽  
T.S. Barros ◽  
S.S. Carvalho ◽  
L.R. Guzela ◽  
...  
Keyword(s):  
Pure Titanium ◽  
High Hardness ◽  
Processing Route ◽  
Hardness Tests ◽  
Bone Powder ◽  
Complex Shapes ◽  
Different Temperatures ◽  
Titanium Powders ◽  
Good Biocompatibility

Titanium is the most adequate metallic material for orthopedic or dental implants fabrication, due to a very favorable combination of properties, when compared with other metals, such as good corrosion resistance, good mechanical properties, relatively low density, elasticity modulus close to that of bone and good biocompatibility, which assures good adhesion/integration to bone. Powder metallurgy has been used for titanium based implants fabrication due to advantages such as the production of more complex shapes and reduction of machining operation. In this work, compacted pure titanium powders, consolidated by rolling at different temperatures, were characterized by means of optical microscopy, Field Emission Scanning Electron Microscopy (FESEM) with Electron Back Scattering Diffraction (EBSD) analysis, automatic image analysis and hardness tests. The hardness of rolled samples increased from 200 to 400oC , which indicated that 300 to 400°C is the most adequate temperature range for this processing route, since it allowed obtaining low porosity with satisfactory and relatively high hardness.

Effect of plating on consolidation of commercially pure titanium powders

2013 ◽  
Vol 17 (sup2) ◽  
pp. s85-s89 ◽  
Author(s):  
R. Thyagarajan ◽  
G. M. D. Cantin ◽  
C. J. Bettles ◽  
N. A. Stone ◽  
B. P. Kashyap
Keyword(s):  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Commercially Pure ◽  
Titanium Powders
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