The influence of the oxygen partial pressure on the ion nitriding of aluminium – An investigation by means of real time elastic recoil detection analysis

Parascandola, S.; Telbizova, T; Kruse, Olaf; Möller, W.

doi:10.1016/s0168-583x(99)00906-4

Cited by 14 publications

(7 citation statements)

References 9 publications

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“…Therefore, reducing the oxygen partial pressure in the deposition chamber can be a straight way to prevent or reduce the growth of oxide passive layers. 36 By looking at the tendency at Figure 3 from a previous article 22 and considering 21% of oxygen in the total pressure, it is straightforward to propose that the critical load of delamination (Lc in Newton) is inversely proportional to the oxygen coverage on the interfacial surface (σ in atoms•m −2 ) and for a fixed temperature, we have…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Adhesion of Amorphous Carbon Nanofilms on Ferrous Alloy Substrates Using a Nanoscale Silicon Interlayer: Implications for Solid-State Lubrication

Boeira

Cemin

Leidens

et al. 2022

ACS Appl. Nano Mater.

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The low adhesion of amorphous carbon (a-C) films on ferrous alloys has restricted massive industrial application since their development, restricting application to mechanical and electromechanical components. Although different mechanisms have been raised to describe the a-C film adhesion, the chemical affinity and the role of oxygen at the interfaces are the key issue. Nevertheless, a quantitative approach considering the oxygen adsorption and the adhesion strength/base pressure relationship is still not proposed, which would be of special interest in industry. In this study, we analyze the influence of the base pressure on the adhesion of amorphous carbon (a-C) films onto a ferrous alloy intermediated by a nanometric silicon interlayer. The different base pressure deposition resulted in different adhesion of the films. By means of structural and chemical techniques, the oxygen content at the interfaces was quantified and correlated with the base pressure before thin film deposition. We propose a quantitative physicochemical model that correlates the a-C film adhesion with oxygen located at the interfaces, which is indirect evidence of its previous presence in the deposition chamber, as a fraction of the residual gases from the base pressure. As adhesion depends on oxygen content, we used the Langmuir isothermal law to evaluate this dependence with good agreement. This model may be of potential interest in plasma surface engineering and process automatization not only for carbon-related materials deposited on metals, mainly in its potential use as a solid lubricant.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…The kinetic theory of ideal gases describes that the amount of molecules that collide with a surface, r IG (eq ), at a constant temperature ( T ), is proportional to the pressure (P) as shown as follows: where k denotes the Boltzmann constant, T is the temperature (K), and m is the mass of an oxygen molecule.…”

Section: Results and Discussionmentioning

confidence: 99%

Adhesion of Amorphous Carbon Nanofilms on Ferrous Alloy Substrates Using a Nanoscale Silicon Interlayer: Implications for Solid-State Lubrication

Boeira

Cemin

Leidens

et al. 2022

ACS Appl. Nano Mater.

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“…All experiments were carried out at a partial pressure of H 2 O and O 2 less than 3ϫ10 Ϫ5 Pa in order to suppress reoxidation from the ambient. 29 The samples were heated from the rear side using a boron nitride heater. The substrate temperature was measured by a thermocouple fixed into a hole drilled into the sample and kept constant within a͒ Author to whom correspondence should be addressed; electronic mail: t.fitz@fz-rossendorf.de Ϯ20°C during the process.…”

Section: Methodsmentioning

confidence: 99%

“…The surface binding energy of N in AlN is set to 9.1 eV according to the balance of fusion and atomization enthalpies. 29,34 The TRIDYN calculations were performed in a stationary mode, i.e., by assuming stoichiometric AlN that remains unaltered. For N ϩ ions, a simulation is performed with the ion beam energy of 1.6 keV.…”

Section: Methodsmentioning

confidence: 99%

AlN growth kinetics during ion nitriding of aluminum

Fitz

Möller

2002

Journal of Applied Physics

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“…Although many applications are in the so‐called “state‐of‐the‐art” models and quantitative understandings remain rather incomplete. In the last decade, however, several studies were reported discussing the role of oxygen, hydrogen, and deuterium in nitrogen implantation of metal alloys 2–4. Furthermore, the pioneer work of Parascandola et al has shown that oxygen acts as a potential barrier for nitrogen diffusion, diminishing the nitrogen incorporation into the bulk material 5,6.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Effects in Plasma Nitriding of Ferrous Alloys

Figueroa

Weber²,

Czerwiec

2007

Plasma Process. Polym.

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In this paper, we study the oxygen effect in low energy nitrogen implanted stainless steel AISI 316 at different oxygen partial pressures and temperatures. The samples were studied by photoemission electron spectroscopy (XPS) and sputtered neutral mass spectrometry (SNMS). Increasing the oxygen partial pressure during nitriding decreases the nitrogen content in the material depth. Surface oxidation induces phase segregation. The presence of oxygen forms CrOχ on the top most layer of the sample and, subsequently, a nickel layer appears at approximately 9–10 nm beneath the surface. Moreover, the surface oxidation reaction of metal elements depends more strongly on the oxygen atoms landing on the surface rather than on the temperature process. At higher temperatures, on the other hand, the NOχ species are degraded.

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The influence of the oxygen partial pressure on the ion nitriding of aluminium – An investigation by means of real time elastic recoil detection analysis

Cited by 14 publications

References 9 publications

Adhesion of Amorphous Carbon Nanofilms on Ferrous Alloy Substrates Using a Nanoscale Silicon Interlayer: Implications for Solid-State Lubrication

Adhesion of Amorphous Carbon Nanofilms on Ferrous Alloy Substrates Using a Nanoscale Silicon Interlayer: Implications for Solid-State Lubrication

AlN growth kinetics during ion nitriding of aluminum

Oxygen Effects in Plasma Nitriding of Ferrous Alloys

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