surface nitriding of titanium in arc plasma - sciencedirect

Thermochemical Treatment of Metals

2012/7/12Plasma nitriding, called also ion nitriding, was invented by Wehnheldt and Berghause in 1932 but became commercially viable as late as in 1970's. It uses the glow discharge phenomenon to introduce nascent nitrogen to the surface of an alloy and its subsequent diffusion into subsurface layers [

Plasma Nitriding of Steels: Part One

Plasma nitriding or ion nitriding is a modern process used to impart surface hardening to metals for a wide variety of applications. As the name implies, the process is carried out in a plasma media containing ionized nitrogen alone, or in combination with other gasses to react with the work surface.

In vitro study of platelet behaviour on titanium surface

Abstract Biomedical devices introduced in the human body interact initially with blood cells, their success being dependent on the result of this interaction. This work aimed to obtain optimum biocompatibility and hemocompatibility of the titanium by plasma treatment. For this, discs of commercially pure titanium (CP) were subjected to plasma nitriding using different mixture of nitrogen and

CiteSeerX — Investigation of Properties of Titanium Alloy

Abstract titanium alloy VT-16 (Ti–3Al–4.5V–5.0Mo) in plasma of non-selfsustained glow and arc discharges are presented. Treated samples were investigated by methods of optical microscopy, microhardness measurements, scanning electron microscopy and X-ray

CiteSeerX — Investigation of Properties of Titanium Alloy

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): titanium alloy VT-16 (Ti–3Al–4.5V–5.0Mo) in plasma of non-selfsustained glow and arc discharges are presented. Treated samples were investigated by methods of optical microscopy

Low temperature nitriding of AISI 316L stainless steel

AISI 316L stainless steel (SS) and titanium nitriding were studied in a low pressure arc-assisted nitriding process where the substrate temperature and the plasma parameters are uncoupled. Lower nitriding temperature limits were explored for constant plasma parameters in Ar–N2 gas mixtures and substrates at floating potential.

Effects of Plasma Nitriding and TiN Coating Duplex

The commercially pure(CP) titanium specimens were modified with Direct current(DC) plasma nitriding and arc ion plating of TiN film. The duplex treated titanium samples were characterized by scanning electron microscopy(SEM), microhardness tester and ball-on

Surface hardening of titanium using gas nitriding

In this study, a rotary barrel tank was employed with gas nitriding in an attempt to form a hard layer on the surface of pure titanium. Nitriding was carried out at 773 K to 1073 K for 3.6 ks to 32.4 ks. Alumina powders were used as the media that flowed in the barrel tank. A new surface hardening process was developed for forming hard layers on a pure titanium surface. A uniform hard layer

Tribological evaluation of surface modified H13 tool steel in warm forming of Ti€"6Al€"4V titanium

surface polishing and nitriding treatment) used in warm form-ing of Ti–6Al–4V titanium alloy sheet are compared via the high temperature friction and wear experiments under various lubricating conditions and at different temperatures. Then, a proper surface 2.

NITRIDING, OXIDATION AND CARBURIZATION OF TITANIUM

vacuum arc plasma gun is used as a source of supple-mentary charges has been successfully applied for ni-triding of high speed steel cutting tools [1-4]. The hard-ness of instrument enhance to 1400 HV, the thickness of nitriding layer grows with a speed of 1 μ

Surface hardening of titanium using gas nitriding

In this study, a rotary barrel tank was employed with gas nitriding in an attempt to form a hard layer on the surface of pure titanium. Nitriding was carried out at 773 K to 1073 K for 3.6 ks to 32.4 ks. Alumina powders were used as the media that flowed in the barrel tank. A new surface hardening process was developed for forming hard layers on a pure titanium surface. A uniform hard layer

Effects of Carbon and Nitrogen Plasma Immersion Ion

Effect of plasma nitriding treatment on structural, tribological and electrochemical properties of commercially pure titanium. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 2016, 230 (2), 145-152.

Improvement of bond strength of plasma

The bond strength of plasma-sprayed HA/Ti composite coatings on Ti substrate was significantly improved by the partial nitriding of Ti deposits in the coatings during plasma spraying. HA/Ti composite coatings were deposited on titanium substrates by a rf thermal plasma-spraying method with rf input powers of 12-27 kW. The ratio of HA and Ti powders supplied into the plasma was precisely

Oxidation Mechanism of Biomedical Titanium Alloy

Glow discharge plasma deposition can get a clean surface, and the thickness of the oxide film obtained is 2 nm to 150 nm [2–8]. The oxide film obtained from oxygen ion implantation is thicker, about several microns [9–14]. Hydrogen peroxide treatment of15, 16].

PAPER OPEN ACCESS Structure and properties of titanium after

glowing charge plasma. After nitriding in the plasma of a non-self-sustained glow discharge at temperature of 600-700 С, the resulting surface hardness titanium and durability of VT1-0 are several times higher than in the original state [3].

Surface Coatings Technology

Surface Coatings Technology, Volume 61 presents the proceeding of the 20th International Conference on Metallurgical Coatings and Thin Films, held in San Diego, California, on April 19–23, 1993. This book discusses a variety of topics related to surface and coatings technology, including coatings for use at high temperature, hard coatings, and vapor deposition technology.

Nitriding of Pure Titanium using Pulsed

Nitriding of Pure Titanium using Pulsed-Arc Atmospheric-Pressure Plasma Jet Y. Yoshimitsu1, *R. Ichiki1, S. Kanda1, M. Yoshida2, S. Akamine1, S. Kanazawa1 1Department of Electrical and Electronic Engineering, Oita University, Oita 870-1192, Japan. 2Department of Mechanical Engineering, Shizuoka Institute of Science and Technology, Fukuroi, 437-8555, Japan

Titanium and Titanium Alloys as Biomaterials

2012/4/10A plasma discharge is formed on the surface of the substrate, transforming it into a thin, protective layer of titanium oxide, without subjecting the substrate itself to damaging thermal exposure. Among all the above mentioned surface treatments, Diamond-Like Carbon coating and Plasma Electrolytic Oxidation are the most promising ones applied on titanium surfaces.

Effects of Carbon and Nitrogen Plasma Immersion Ion

Effect of plasma nitriding treatment on structural, tribological and electrochemical properties of commercially pure titanium. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 2016, 230 (2), 145-152.

PAPER OPEN ACCESS Structure and properties of titanium after nitriding in a plasma

glowing charge plasma. After nitriding in the plasma of a non-self-sustained glow discharge at temperature of 600-700 С, the resulting surface hardness titanium and durability of VT1-0 are several times higher than in the original state [3].

Mechanism of Surface Modification of the Ti

B. Titanium Nitriding Kinetics The chemical composition of the resolidified surfaces was determined by EDS, and the analyses are listed in Table II. It can be seen that the chemical composition varies with depth below the resolidified titanium alloy surface.

Improvement of bond strength of plasma

The bond strength of plasma-sprayed HA/Ti composite coatings on Ti substrate was significantly improved by the partial nitriding of Ti deposits in the coatings during plasma spraying. HA/Ti composite coatings were deposited on titanium substrates by a rf thermal plasma-spraying method with rf input powers of 12-27 kW. The ratio of HA and Ti powders supplied into the plasma was precisely

Surface modification of Ti

In order to improve the wear resistance of titanium alloys, the potential of the plasma nitriding process with a cathode assiting discharge setup was examined. Ti6Al4V alloy was nitrided by the cathode assiting discharge nitriding (CAN) and conventional DC plasma nitriding (CPN) methods, respectively. The micro-topography, phase composition and cross-sectional microhardness distribution of two

Frontiers

Interestingly, Ji et al. (2016) compared the adhesion of Streptococcus mutans on polished titanium (control group), magnetron sputtering titanium, and plasma nitriding modified titanium samples. There is not any clear difference between the treated samples and the control group.

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