Surface nitriding of titanium and aluminium by laser-induced plasma

Thomann, Anne-Lise; Sicard, E.; Boulmer‐Leborgne, C.; Vivien, Céline; Hermann, J.; Andreazza‐Vignolle, C.; Andreazza, Pascal; Meneau, C.

doi:10.1016/s0257-8972(97)00199-0

Cited by 47 publications

(18 citation statements)

References 9 publications

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“…The studies give a detailed insight into the reaction kinetics. Thomann et.al [106][107] did experiments using 300 ns pulses at 10 Hz and fluences up to 25 J/cm². [94][95] carried out the synthesis method with Ti6Al4V.…”

Section: Fig 17 Cross Section Micrograph Of Co 2 Laser Nitrided Titamentioning

confidence: 99%

“…Excimer laser nitriding: Soft UV radiation has been utilized from D'Anna et.al [108][109], Thomann et.al [106][107], Mihailescu et.al [111][112][113] and Carpene and Han et.al [51,67] to synthesize TiN in nitrogen atmosphere. D'Anna used a XeCl laser (30 ns) at 0.6 -1 J/cm², 50 Hz and 1.1 bar to perform his experiments.…”

Section: Fig 17 Cross Section Micrograph Of Co 2 Laser Nitrided Titamentioning

confidence: 99%

“…At least a comparison of results using other commercial laser will be shown. This discussion contains results on CO 2 laser nitriding (taken from [24,34,37,41,), Excimer laser nitriding [51,67,[106][107][108][109][110][111][112][113] and first investigations on a femtosecond Ti:Sapphire laser [51,61]. At least the solidification behaviour gets classified into the valid theory.…”

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confidence: 99%

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Laser nitriding: investigations on the model system TiN. A review

Höche

Schaaf

2010

Heat Mass Transfer

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Nitriding is a well known technique to improve properties of materials. The process utilizing laser contains many different processes like heat transport and melting effects, diffusion and convection, which partially determine the synthesized coatings. This review concludes the research on titanium nitride synthesis in reactive ambient and draws conclusions for the general handling of the method. Afterwards, it becomes clear which and why, transport processes limit the coating properties. IntroductionHard material systems such as titanium nitride play an important role within the field of material sciences and industrial applications. In particular wear and corrosion protection are based on such systems. Beside the classical manufacturing procedures such as PVD or CVD, the method of the direct laser synthesis in a reactive gas environment, as examined here, represents an alternative to the production of such coatings. This review discusses the synthesis of such functional coatings on the system titanium -nitrogen by different laser irradiation based on own results respectively the literature and tries to give a general overview of the physical respectively transport processes taking place. Thus, experiments from the last three decades using similar experimental setups will be compared and discussed. Due to the availability of data of investigations utilizing titanium and nitrogen, this system was taken as a general model. After a discussion of several different experimental analyses and modelling results, the treatments get parameterized. This results in large potentials for technical applications. Finally, general conditions for the synthesis of such coatings with this procedure were set up. By means of these results it is possible to achieve purposefully predefined layer characteristics. The review concludes the most important publications containing research about this process. Thus, it could be assumed to be a reference in relation to laser nitriding or -carburizing. [4] or also hybrid procedures. A further alternative and very simple method is the direct lasers synthesis. The material is placed in a reactive gas environment and will be irradiated with laser light. Due to the developing physical and chemical effects coatings are synthesized, which possess special treatment dependent characteristics. Carburizing, nitro carburizing and/or nitriding are to most common methods from this field of processes. The method of nitriding particularly assists the improvement of tribological properties of surfaces. The surface hardness gets increased, whereby the wear resistance rises. Furthermore, these coatings are usually very non-reactive, which leads to an increase in corrosion protection. In the following the method will be studied more exactly and will be explained. Quantifying of the processes gets an important aim of the work. Arising phenomena will also be modelled. To do these investigations, the model titanium nitrogen has been used. It is a well known and often used system, and has been investigated ...

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Section: Fig 17 Cross Section Micrograph Of Co 2 Laser Nitrided Titamentioning

confidence: 99%

Section: Fig 17 Cross Section Micrograph Of Co 2 Laser Nitrided Titamentioning

confidence: 99%

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Laser nitriding: investigations on the model system TiN. A review

Höche

Schaaf

2010

Heat Mass Transfer

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“…Nitriding of surface layers of titanium alloys is one of the most widely used thermochemical treatments in industry [15,16]. The methods of surface nitriding of titanium alloys such as plasma, physical vapor deposition (PVD), chemical vapor deposition (CVD), salt-bath nitriding and ion implantation have been developed and applied for many years [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Titanium Matrix Composite Ti/TiN Produced by Diode Laser Gas Nitriding

Lisiecki

2015

Metals

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A high power direct diode laser, emitting in the range of near infrared radiation at wavelength 808-940 nm, was applied to produce a titanium matrix composite on a surface layer of titanium alloy Ti6Al4V by laser surface gas nitriding. The nitrided surface layers were produced as single stringer beads at different heat inputs, different scanning speeds, and different powers of laser beam. The influence of laser nitriding parameters on the quality, shape, and morphology of the surface layers was investigated. It was found that the nitrided surface layers consist of titanium nitride precipitations mainly in the form of dendrites embedded in the titanium alloy matrix. The titanium nitrides are produced as a result of the reaction between molten Ti and gaseous nitrogen. Solidification and subsequent growth of the TiN dendrites takes place to a large extent at the interface of the molten Ti and the nitrogen gas atmosphere. The direction of TiN dendrites growth is perpendicular to the surface of molten Ti. The roughness of the surface layers depends strongly on the heat input of laser nitriding and can be precisely controlled. In spite of high microhardness up to 2400 HV0.2, the surface layers are crack free.

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“…L'action conjointe du chauffage laser et du plasma permet I'incorporation d'azote dans le substrat et la formation de nitrure d'aluminium. Ce procédé a été utilisé pour la nitruration du titane [2] et du fer [3,4] …”

Section: Introductionunclassified

Nitruration d'alliages légers par laser à excimère

1999

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Résumé : L'amélioration des propriétés tribologiques des alliages d'aluminium permettrait de substituer des pièces en acier ou en fonte dans les moteurs de voitures et donc d'alléger les véhicules et diminuer la consommation de carburant. Pour y parvenir il est nécessaire de renforcer la surface des alliages d'aluminium. Le procédé développé et utilisé dans cette étude est un procéd6 de nitruration par plasma produit par laser qui permet de synthétiser du nitrure d'aluminium en surface et jusqu'h une épaisseur de quelques microns. L'utilisation de plusieurs techniques d'analyse (analyses nucléaires, analyses cristallographiques, analyses par microscopie électronique) permet de décrire précisément la structure de la couche formée par ailleurs le rôle du plasma dans la formation de la couche a été étudié.

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Surface nitriding of titanium and aluminium by laser-induced plasma

Cited by 47 publications

References 9 publications

Laser nitriding: investigations on the model system TiN. A review

Laser nitriding: investigations on the model system TiN. A review

Titanium Matrix Composite Ti/TiN Produced by Diode Laser Gas Nitriding

Nitruration d'alliages légers par laser à excimère

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