scholarly journals Titanium-Nitride Coating of Orthopaedic Implants: A Review of the Literature

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ruud P. van Hove ◽  
Inger N. Sierevelt ◽  
Barend J. van Royen ◽  
Peter A. Nolte
Keyword(s):  
Titanium Nitride ◽  
Polyethylene Wear ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Coating Process ◽  
Orthopaedic Implant ◽  
Cohesive Failure ◽  
Orthopaedic Implants ◽  
Tin Coating ◽  
Titanium Nitride Coating ◽  
English Medical Literature

Surfaces of medical implants can be enhanced with the favorable properties of titanium-nitride (TiN). In a review of English medical literature, the effects of TiN-coating on orthopaedic implant material in preclinical studies were identified and the influence of these effects on the clinical outcome of TiN-coated orthopaedic implants was explored. The TiN-coating has a positive effect on the biocompatibility and tribological properties of implant surfaces; however, there are several reports of third body wear due to delamination, increased ultrahigh molecular weight polyethylene wear, and cohesive failure of the TiN-coating. This might be due to the coating process. The TiN-coating process should be optimized and standardized for titanium alloy articulating surfaces. The clinical benefit of TiN-coating of CoCrMo knee implant surfaces should be further investigated.

Effects of Hydrothermal Treatment on Properties of Titanium Nitride Coating for Dental Implants

2012 ◽  
Vol 529-530 ◽  
pp. 247-250 ◽  
Author(s):  
Xing Ling Shi ◽  
Kanji Tsuru ◽  
Giichiro Kawachi ◽  
Ishikawa Kunio
Keyword(s):  
Surface Morphology ◽  
Titanium Nitride ◽  
Hydrothermal Treatment ◽  
Dental Implant ◽  
Pure Titanium ◽  
Surface Hardness ◽  
Nitride Coating ◽  
Tin Coating ◽  
Titanium Nitride Coating ◽  
Implant Coating

To improve surface hardness of dental implant made of pure titanium (Ti), titanium nitride (TiN) coating was introduced. However, studies revealed that TiN only showed osseointegration similar or inferior to that of Ti. Therefore it is necessary to improve the biocompatibility of TiN for dental implant coating. In the present study, TiN coating was prepared on pure Ti substrates and hydrothermal treatment was conducted to modify its surface properties. It was found that, TiN surface was partially oxidized after treatment and calcium (Ca) was successfully combined onto its surface. Surface morphology, roughness and hardness were not affected after treatments below 140°C and wettability was obviously improved.

Thermochemical processes occurring in a titanium nitride coating under the effect of thermal laser pulses

2021 ◽  
Vol 1 ◽  
pp. 25-30
Author(s):  
P.Yu. Kikin ◽  
◽  
V.N. Perevezentsev ◽  
E.N. Razov ◽  
E.E. Rusin ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Steel Substrate ◽  
Laser Pulses ◽  
Iron Nitride ◽  
Nitride Coating ◽  
Tin Coating ◽  
Titanium Nitride Coating ◽  
Mass Fractions ◽  
Thermochemical Processes ◽  
Original Coating

The thermochemical processes in a TiN coating deposited on a steel substrate under cyclic irradiation with laser pulses are investigated. It has been established that the combustion of the coating in the irradiated regions occurs spatially inhomogeneously due to the uneven distribution of microregions in the coating, consisting of titanium nitride compounds with different stoichiometry. It is shown that dissociation reactions of various titanium nitride compounds with the release of free nitrogen occur inside the coating. As a result, the ratio of the mass fractions of titanium nitride compounds with different stoichiometry changes in comparison with the original coating. Diffusion of nitrogen into the steel substrate results in the formation of iron nitride.

Tribotechnical Characteristics of Titanium Nitride Coating for Heavy-Duty Friction Clutches.

1980 ◽  
Vol 41 (5) ◽  
pp. 558-566
Author(s):  
O. Yu Elagina ◽  
◽  
D.O. Kolbas ◽  
A.G. Buklakov ◽  
N. Derr ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Nitride Coating ◽  
Heavy Duty ◽  
Titanium Nitride Coating ◽  
Tribotechnical Characteristics

Bio-Ferrography to Capture and Separate Polyethylene Wear Debris from Hip Simulator Fluid and Compared with Conventional Filter Method

2005 ◽  
Vol 128 (2) ◽  
pp. 436-441 ◽  
Author(s):  
Donna M. Meyer ◽  
Adam Tillinghast ◽  
Nevan C. Hanumara ◽  
Ana Franco
Keyword(s):  
Experimental Method ◽  
Bovine Serum ◽  
Wear Debris ◽  
Polyethylene Wear ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Filter Method ◽  
Acetabular Cup ◽  
Serum Samples ◽  
Uhmwpe Wear ◽  
Uhmwpe Particle

This paper describes an experimental method, bio-ferrography, to separate ultrahigh molecular weight polyethylene (UHMWPE) wear debris, generated in hip simulators, from bovine serum lubricating fluid. A total of 54 experiments were performed in which an enzyme digestion “cocktail” was developed and used to clean the bovine serum samples of extraneous sugars, proteins, and lipids that interfere with the UHMWPE particle separation. Erbium chloride was used to marginally magnetize particles in the fluid prior to passing through the ferrographic device. The particles were captured and separated from the fluid by traversing the treated serum across a magnetic gap of a bio-ferrograph. Morphology of the captured and separated wear debris was compared with particles from samples of fluid filtered through a paper sieve arrangement with pores of 0.05micrometers in diameter. The UHMWPE wear debris collected using the described experimental method, were found to be between 0.1 and 20micrometers in diameter with spherical and pill-shaped particles. The filtered UHMWPE particles were in the same size range as the debris separated using bio-ferrography. To show that the experimental method captured UHMWPE particles, the spectra of the chemical composition of UHMWPE from an acetabular cup insert of a hip implant and of UHMWPE particles separated using bio-ferrography were compared and found to be the same. To further demonstrate that polyethylene could be captured and separated through the experimental method, manufactured polyethylene microspheres in the diameter range of 3-45micrometers, were captured and separated using the bio-ferrographic process.

scholarly journals Orthopaedic implant infections: interplay of associated factors

2019 ◽  
Vol 6 (2) ◽  
pp. 357
Author(s):  
Shazia Benazir ◽  
Umar Nazir ◽  
Shaista Nazir ◽  
Azhar Shafi ◽  
Lenah Bashir ◽  
...  
Keyword(s):  
Risk Factors ◽  
Early Onset ◽  
The Body ◽  
Orthopaedic Implant ◽  
Medical Implants ◽  
Tissue Destruction ◽  
Orthopaedic Implants ◽  
Duration Of Surgery ◽  
Hospital Resources ◽  
Standard Techniques

Background: Medical implants are devices that are placed inside or on the surface of the body for functional, cosmetic or therapeutic purposes. Orthopaedic implants are usually associated with infections which lead to devastating complications for the patients. The study was conducted to evaluate the association of various factors considered to affect orthopaedic implant infections.Methods: The 100 patients with orthopaedic implant infections were included. Various patient parameters including risk factors, intervention form and type of onset of infection were recorded. Microbiological workup was done by standard techniques along with biofilm detection.Results: Early onset of infection was prevalent in cases with open fractures. Smoking and tissue destruction were the major risk factors. Longer duration of surgery was associated with early onset and polymicrobial infections. 15.5% of the isolates were strong biofilm producers. Staphylococcus aureus was the predominant biofilm producer. More biofilm producing organisms were recovered from stainless steel implants.Conclusions: Orthopaedic device-related infections lead to extreme morbidity in patients and puts a great encumberance on hospital resources. Various factors affect the outcome of orthopaedic implants. Appropriate infection control and institution specific interventions will help in reducing the magnitude of the problem.

scholarly journals Titanium Nitride Coating of Graphite Using the Sol-gel Method

TANSO ◽  
1991 ◽  
Vol 1991 (146) ◽  
pp. 15-21
Author(s):  
Kanichi Kamiya ◽  
Takayoshi Atsumi ◽  
Hiroyuki Nasu
Keyword(s):  
Titanium Nitride ◽  
Sol Gel ◽  
Nitride Coating ◽  
Gel Method ◽  
Sol Gel Method ◽  
Titanium Nitride Coating
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