scholarly journals Investigations of Titanium Implants Covered with Hydroxyapatite Layer

2016 ◽  
Vol 16 (2) ◽  
pp. 78-86 ◽  
Author(s):  
B. Świeczko – Żurek ◽  
M. Bartmański
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Dental Implants ◽  
Human Body ◽  
Titanium Implants ◽  
Metallic Materials ◽  
Good Corrosion Resistance ◽  
Electrophoresis Method ◽  
New Generation

Abstract To reduce unfavorable phenomena occurring after introducing an implant into human body various modifications of the surface are suggested. Such modifications may have significant impact on biocompatibility of metallic materials. The titanium and it's alloys are commonly used for joint and dental implants due to their high endurance, low plasticity modulus, good corrosion resistance as well as biocompatibility. Special attention should be given to titanium alloys containing zirconium, tantalum and niobium elements. These new generation alloys are used by worldwide engineering specialists. The experiments were performed with hydroxyapatite layer on titanium specimens with the use of electrophoresis method (different voltage and time).

scholarly journals Aluminum- and Vanadium-free Titanium Alloys for Medical Applications

2020 ◽  
Vol 321 ◽  
pp. 05008
Author(s):  
Fabian Haase ◽  
Carsten Siemers ◽  
Lina Klinge ◽  
Cheng Lu ◽  
Patric Lang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Human Body ◽  
Alloying Elements ◽  
Medical Applications ◽  
Good Corrosion Resistance ◽  
Cp Ti ◽  
Strength And Ductility

CP-Ti, Ti 6A l 4V (ELI), and Ti 6Al 7Nb are often used for manufacturing osteosynthesis products or implants. However, researches have revealed that Al and V can have detrimental effects on the human body. Therefore, several Al- and V-free near-α and (α+β) titanium alloys have been developed on the basis of CP-Ti Grade 4+ (Ti 0.4O 0.5Fe 0.08C). They should possess similar or better mechanical properties than Ti 6Al 4V (ELI) combined with an improved biocompatibility and good corrosion resistance. O, C, Fe, Au, Si, Nb, or Mo have been used as alloying elements, which are either already present in the human body or are biocompatible. Several of the studied alloys show a strength and ductility fulfilling the requirements of Ti 6Al 4V ELI as specified in ASTM F136. For instance, Ti 0.44O 0.5Fe 0.08C 2.0Mo exhibits a YTS of approx. 1005 MPa, an UTS of approx. 1015 MPa, and an elongation at rupture of at least 17%. Therefore, one or more of the studied alloys are promising candidates for replacing Ti 6Al 4V ELI in osteosynthesis and implant applications.

Nutrient alloying elements in biodegradable metals: a review

2021 ◽  
Author(s):  
Huafang Li ◽  
Guicai Lin ◽  
Pengyu Wang ◽  
Jinyan Huang ◽  
Cuie Wen
Keyword(s):  
Human Body ◽  
Economic Burden ◽  
Research Topic ◽  
Alloying Elements ◽  
Metallic Materials ◽  
Secondary Surgery ◽  
Biodegradable Metals ◽  
New Generation

As a new generation of biomedical metallic materials, biodegradable metals have become a hot research topic in recent years because they can completely degrade in the human body, thus preventing secondary surgery, and reducing the pain and economic burden for patients.

Effect of the Content on the Electrochemical Stability of Titanium Alloys with Vanadium or Zirconium

2008 ◽  
Vol 59 (6) ◽  
Author(s):  
Mihai Vasile Popa ◽  
Ecaterina Vasilescu ◽  
Paula Drob ◽  
Cora Vasilescu ◽  
Mariana Prodana
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Human Body ◽  
Electrochemical Stability ◽  
Bare Metal ◽  
Ph Values ◽  
Electrochemical Parameters ◽  
Ph Range

Zirconium has very good osseointegration in human body and is considered inertly both the bare metal and its oxides. Zirconium is passive on a large pH range from 4 to 13 value and is protected by its ZrO2 resistant oxide. The new ternary Ti-6Al-4Zr alloy has higher corrosion resistance than Ti-6Al-4V alloy in Ringer 1 and Ringer 2 solutions of different pH values (from 2.33 to 9.4) that simulate the extreme functional conditions of an implant. All main electrochemical parameters and anticorrosive properties are improved as a result of the beneficial, favorable effects of the replacement of vanadium with zirconium.

scholarly journals On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 878 ◽  
Author(s):  
Afzali ◽  
Ghomashchi ◽  
Oskouei
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Corrosion Behaviour ◽  
Electrochemical Corrosion ◽  
Passive Layer ◽  
Medical Implant ◽  
Low Modulus ◽  
New Generation ◽  
The Impact

The corrosion behaviour of new generation titanium alloys (β-type with low modulus) for medical implant applications is of paramount importance due to their possible detrimental effects in the human body such as release of toxic metal ions and corrosion products. In spite of remarkable advances in improving the mechanical properties and reducing the elastic modulus, limited studies have been done on the electrochemical corrosion behaviour of various types of low modulus titanium alloys including the effect of different beta-stabilizer alloying elements. This development should aim for a good balance between mechanical properties, design features, metallurgical aspects and, importantly, corrosion resistance. In this article, we review several significant factors that can influence the corrosion resistance of new-generation titanium alloys such as fabrication process, body electrolyte properties, mechanical treatments, alloying composition, surface passive layer, and constituent phases. The essential factors and their critical features are discussed. The impact of various amounts of α and β phases in the microstructure, their interactions, and their dissolution rates on the surface passive layer and bulk corrosion behaviour are reviewed and discussed in detail. In addition, the importance of different corrosion types for various medical implant applications is addressed in order to specify the significance of every corrosion phenomenon in medical implants.

scholarly journals Synthesis of Ti-Zr alloy by powder metallurgy

2019 ◽  
Vol 39 (1) ◽  
pp. 115-123 ◽  
Author(s):  
Ljerka Slokar ◽  
Anita Štrkalj ◽  
Zoran Glavaš
Keyword(s):  
Titanium Alloy ◽  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Dental Implants ◽  
Sintered Density ◽  
Sintering Temperature ◽  
Processing Parameters ◽  
Titanium Implants ◽  
Titanium Zirconium ◽  
Zr Alloy

Due to good properties, which meet the requirements for use as biomaterials, titanium and titanium alloys have been increasingly used as dental implants. Until recently, dental titanium alloys were produced by casting. Since this process does not meet the terms of economy and efficiency, the production of titanium implants by powder metallurgy are very promising. Therefore, in this work titanium alloy with addition of 10 at. % zirconium is prepared by powder metallurgy with the goal of obtaining the best producing conditions, which would result in the titanium alloy of the adequate properties for use as dental implants. High values of green densities were achieved even only by uniaxial pressing. Further, sintering temperature of 1673 K resulted in the alloy of the highest sintered density and microhardness. The results of this investigation revealed the processing parameters applicable for the production of titanium-zirconium dental implants by powder metallurgy.

scholarly journals A Comparative Study of Hydroxyapatite Coating Produced with Plasma Electrolytic Oxidation and Hydrothermal Treatment on Titanium Alloys: Ti6Al4V and Ti6Al7Nb for Dental Implants

2018 ◽  
Author(s):  
Elinor Nahum ◽  
Svetlana Lugovskoy
Keyword(s):  
Titanium Alloys ◽  
Dental Implants ◽  
Human Body ◽  
Water Solution ◽  
Thickness Gauge ◽  
Solution Ph ◽  
Electrolytic Oxidation ◽  
Water Ph ◽  
Mechanical Properties And Corrosion ◽  
Plasma Electrolytic

Titanium and Titanium alloys are considered perfect materials for applications in a human body, such as artificial joints and dental implants.  Ti6Al4V is a very common alloy used for dental implants, owing to its good mechanical properties and corrosion resistance. Nevertheless, because of uncertainties regarding the toxicity of vanadium and its influence on the human body, other titanium alloys containing no vanadium and retaining suitable properties are used. The aim of this study is to compare two viable titanium alloys, Ti6Al4V and Ti6Al7Nb, and to attain on their surface hydroxyapatite (HA) coating improving the osseointegration, as it simulates a human bone. In this work Ti6Al4V and Ti6Al7Nb were oxidized in a water solution of calcium acetate (Ca(CH3COO)2) and calcium glycerophosphate (Ca(PO4CH(CH2OH)2) by Plasma   Electrolytic Oxidation (PEO) for 20 minutes and then were hydrothermally treated (HTT) in water (pH=7) and in KOH solution (pH=11) for 2 hours at 200°C  in a pressurized reactor. The surface morphologies, elemental composition and phase components were characterized by Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-Ray Diffraction, respectively. The surface roughness was measured by Atomic Force Microscope (AFM) and thickness measurements were made by SEM and thickness gauge.  Also, corrosion tests were made to evaluate the corrosion behavior of the two alloys.

BRUSH ALLOY 3

Alloy Digest ◽  
1983 ◽  
Vol 32 (3) ◽  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Copper Alloy ◽  
Elevated Temperatures ◽  
Physical And Mechanical Properties ◽  
Heat Treating ◽  
Good Resistance ◽  
Good Corrosion Resistance

Abstract BRUSH Alloy 3 offers the highest electrical and thermal conductivity of any beryllium-copper alloy. It possesses an excellent combination of moderate strength, good corrosion resistance and good resistance to moderately elevated temperatures. Because of its unique physical and mechanical properties, Brush Alloy 3 finds widespread use in welding applications (RWMA Class 3), current-carrying springs, switch and instrument parts and similar components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-454. Producer or source: Brush Wellman Inc..

SILNIC BRONZE

Alloy Digest ◽  
1960 ◽  
Vol 9 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Silicon Alloy ◽  
Good Corrosion Resistance ◽  
Temperature Performance ◽  
Nickel Silicon

Abstract SILNIC BRONZE is a copper-nickel-silicon alloy having high strength, high conductivity and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-90. Producer or source: Chase Brass & Copper Company Inc..

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