Corrosion Resistance of Ti-29Nb-13Ta-4.6Zr Alloy in a Fluoride-Containing Solution

The objective of this study was to evaluate the corrosion behavior of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with immersion in an acidic saline solution containing fluoride by investigating change in color and the surface structure of the oxide film. With immersion in fluoride-containing solution, TNTZ showed a less marked change in color than commercially pure titanium (TI), and a smaller decrease in glossiness. The outermost surface was covered with oxides from its constituent elements at before and after immersion in solution with or without fluoride. When immersed in fluoride-containing solution, the film consisted of larger niobium and tantalum oxides than that before or after immersion in solution without fluoride. In summary, TNTZ showed superior resistance to discoloration to TI after immersion in fluoride-containing solution. The results suggest that the subsequent increase in niobium and tantalum fractions in the oxide film in TNTZ improves resistance to corrosion.

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Oxidation Effects during High Temperature Deformation of CP Ti Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.3678 ◽

2007 ◽

Vol 539-543 ◽

pp. 3678-3683

Author(s):

Ming Jen Tan ◽

X.J. Zhu ◽

S. Thiruvarudchelvan ◽

K.M. Liew

Keyword(s):

High Temperature ◽

Oxide Film ◽

High Temperatures ◽

Pure Titanium ◽

Initial Strain Rate ◽

High Temperature Deformation ◽

Temperature Deformation ◽

Uniaxial Tensile ◽

Commercially Pure Titanium ◽

Commercially Pure

This work reports the influence of oxidation on the superplasticity of commercially pure titanium at high temperatures. Uniaxial tensile tests were conducted at temperatures in the range 600-800°C with an initial strain rate of 10s-1 to 10s-3. This study shows that oxidization at the surface of the alloy causes oxide film on the surface of commercially pure titanium alloy, and the thickness of oxide film increase with increasing exposure time and temperature. XRD analysis shows that the oxide film consists of TiO2. Because this oxide film is very brittle, it can induce clefts and degrade the ductility of the titanium at high temperatures. The mechanism of the initial clefts was investigated and a model for the cleft initiation and propagation during high temperature tensile test was proposed.

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Fit of cast commercially pure titanium and Ti-6Al-4V alloy crowns before and after marginal refinement by electrical discharge machining

Journal of Prosthetic Dentistry ◽

10.1067/mpr.2002.128954 ◽

2002 ◽

Vol 88 (5) ◽

pp. 467-472 ◽

Cited By ~ 28

Author(s):

Edwin Fernando Ruiz Contreras ◽

Guilherme Elias Pessanha Henriques ◽

Suely Ruiz Giolo ◽

Mauro Antonio Arruda Nobilo

Keyword(s):

Electrical Discharge ◽

Electrical Discharge Machining ◽

Pure Titanium ◽

Commercially Pure Titanium ◽

Commercially Pure ◽

Before And After

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Influence of Deformation Substructures on the Early Mechanisms of Recrystallization in Cold-Rolled Titanium and Zirconium

Materials Science Forum ◽

10.4028/www.scientific.net/msf.495-497.711 ◽

2005 ◽

Vol 495-497 ◽

pp. 711-718 ◽

Cited By ~ 3

Author(s):

N. Dewobroto ◽

Nathalie Bozzolo ◽

Francis Wagner

Keyword(s):

Pure Titanium ◽

Local Deformation ◽

Commercially Pure Titanium ◽

Titanium Sheet ◽

Commercially Pure ◽

Before And After ◽

Nucleation Mechanisms ◽

Grain Fragmentation ◽

Cold Rolled ◽

Short Times

The mechanisms governing the very first stage of static recrystallization in two hexagonal alloys (commercially pure titanium and low alloyed zirconium) are investigated in this paper. Initially fully recrystallized and equiaxed materials were cold-rolled to 80% thickness reduction and subsequently recrystallized at 500°C for short times. High resolution EBSD maps were acquired in a FEG-SEM before and after annealing in order to see where and how the new grains appear. Nonoriented nucleation mechanisms are involved in both materials, and there is a strong correlation between the local deformation substructures and the recrystallization kinetics. Recrystallization is extremely fast in the areas where the deformation cells are small and highly misoriented, i.e. in the areas which underwent severe grain fragmentation. Twinning plays an important role for that purpose in the studied titanium sheet.

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Electrochemical Behaviour of Ti and Ti-6Al-4V Alloy in Phosphate Buffered Saline Solution

Materials ◽

10.3390/ma14247495 ◽

2021 ◽

Vol 14 (24) ◽

pp. 7495

Author(s):

Senka Gudić ◽

Ladislav Vrsalović ◽

Dario Kvrgić ◽

Aleš Nagode

Keyword(s):

Oxide Film ◽

Barrier Layer ◽

Saline Solution ◽

Electrochemical Impedance ◽

Electrochemical Behaviour ◽

Pure Titanium ◽

Commercially Pure Titanium ◽

Corrosion Stability ◽

Cp Ti ◽

Phosphate Buffered Saline

The electrochemical behavior of commercially pure titanium (CP Ti) and Ti-6Al-4V (Grade 5) alloy in phosphate buffered saline solution (PBS, pH = 7.4) at 37 °C (i.e., in simulated physiological solution in the human body) was examined using open circuit potential measurements, linear and potentiodynamic polarization and electrochemical impedance spectroscopy methods. After the impedance measurements and after potentiodynamic polarizationmeasurements, the surface of the samples was investigated by scanning electron microscopy, while the elemental composition of oxide film on the surface of each sample was determined by EDS analysis. The electrochemical and corrosion behavior of CP Ti and Ti-6Al-4V alloys is due to forming a two-layer model of surface oxide film, consisting of a thin barrier-type inner layer and a porous outer layer. The inner barrier layer mainly prevents corrosion of CP Ti and Ti-6Al-4V alloy, whose thickness and resistance increase sharply in the first few days of exposure to PBS solution. With longer exposure times to the PBS solution, the structure of the barrier layer subsequently settles, and its resistance increases further. Compared to Ti-6Al-4V alloy, CP Ti shows greater corrosion stability.

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In vitro comparative analysis of the fit of gold alloy or commercially pure titanium implant-supported prostheses before and after electroerosion

Journal of Prosthetic Dentistry ◽

10.1016/j.prosdent.2004.04.001 ◽

2004 ◽

Vol 92 (2) ◽

pp. 132-138 ◽

Cited By ~ 33

Author(s):

Ivete Aparecida de Mattias Sartori ◽

Ricardo Faria Ribeiro ◽

Carlos Eduardo Francischone ◽

Maria da Gloria Chiarello de Mattos

Keyword(s):

Comparative Analysis ◽

Gold Alloy ◽

Pure Titanium ◽

Titanium Implant ◽

Commercially Pure Titanium ◽

Commercially Pure ◽

Before And After

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RMI 0.2% Pd

Alloy Digest ◽

10.31399/asm.ad.ti0074 ◽

1979 ◽

Vol 28 (12) ◽

Keyword(s):

Corrosion Resistance ◽

Crevice Corrosion ◽

Elevated Temperatures ◽

Pure Titanium ◽

Heat Treating ◽

Low Ph ◽

Commercially Pure Titanium ◽

Bend Strength ◽

Commercially Pure ◽

Minimum Yield

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.

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UPM CP TITANIUM GRADE 3 (UNS R50550)

Alloy Digest ◽

10.31399/asm.ad.ti0167 ◽

2020 ◽

Vol 69 (6) ◽

Keyword(s):

Corrosion Resistance ◽

Pure Titanium ◽

Heat Treating ◽

Commercially Pure Titanium ◽

Commercially Pure ◽

Continuous Service ◽

Pure Grade ◽

Grade 3 ◽

Titanium Grade ◽

Design Stress

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.

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