Comparison of the effect of plasma treatment and gamma ray irradiation on PS-Cu nanocomposite films surface

Farag, Omar F.

doi:10.1016/j.rinp.2018.02.031

Cited by 16 publications

(8 citation statements)

References 26 publications

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“…The variations of discharge operating voltage as a function of Ar and He percentages at fixed current and pressure are depicted in Fig. (1). This figure shows a slightly decreasing voltage with increasing Ar percentage; however, an increasing behavior is obtained in case of He.…”

Section: Resultsmentioning

confidence: 94%

“…Different reactions and their relate rate coefficients are obtained from the literature and listed in Table (1).…”

Section: Methodsmentioning

confidence: 99%

“…Nitrogen plasma is known for its important technological applications in various fields of our life including metallic nitriding, surface modifications of different materials such as polymers and their composites, and sterilization of medical tools. Therefore, until now, a huge number of both theoretical and experimental studies came out investigating and characterizing nitrogen plasmas demonstrating its effects on different materials [1][2][3][4]. Some applications of N 2 plasma, such as surface etching and thin film nitriding, heating and biological sterilization count on the existence of nitrogen in its atomic form.…”

Section: Introductionmentioning

confidence: 99%

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The influence of the gas mixing ratio on some characteristics and reaction rate coefficients of Ar/N2 and He/N2 DC plasma

El-Sayed

Farag

2019

Arab Journal of Nuclear Sciences and Applications

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The aim of this study is to analyze the relation between the reaction rate coefficients, hence the production of active species, and the gas mixing ratio in a comparative way between Ar/N 2 and He/N 2 gaseous mixtures. The Ar and He contributions ranged from 0 to 100 % at a total gas pressure of 0.4 Torr and a reduced electric field E/N of 610 Td. Langmuir probe is employed to measure electron temperature. The results showed that adding Ar to N 2 plasma reduced both the discharge operating voltage and the electron temperature. However, an opposite action is obtained on Adding He. Also, Ar can induce the dissociation of molecular nitrogen and increase the production of nitrogen atoms, however it has an insignificant effect on the nitrogen ionization mechanism. On the other hand, He addition enhances the production of , N + and N-atoms through ionization, ionization dissociation and dissociative reaction, however it has a decreasing effect on the dissociative recombination mechanism

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Section: Resultsmentioning

confidence: 94%

“…Different reactions and their relate rate coefficients are obtained from the literature and listed in Table (1).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of the gas mixing ratio on some characteristics and reaction rate coefficients of Ar/N2 and He/N2 DC plasma

El-Sayed

Farag

2019

Arab Journal of Nuclear Sciences and Applications

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“…Lubricants 2022, 10, 133 2 of 10 Pistons for automobiles are most often produced from eutectic and hypereutectic silumins with silicone content of 12-25 wt %. Modification and microalloying are known to influence greatly the improvement of performance and stress-related characteristics of these alloys [14][15][16][17][18]. The piston operates under rough, often dangerous, conditionsrubbing friction, increased temperature modes and intense loads; that is why it is especially important for the automobile pistons to be efficient, reliable and wear resistant.…”

Section: Introductionmentioning

confidence: 99%

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

et al. 2022

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The paper describes the two-stage modification of the surface layer of hypereutectic Al-20%Si alloy that combines electroexplosive alloying by an Al-Y2O system with subsequent irradiation by pulsed electron beam. It is shown that irrespective of the modification mode, a multilayer structure is formed consisting of the following layers: a surface layer and an intermediate layer. The surface layer is a multiphase material, the thickness of which varies within 1 µm. The intermediate layer, the thickness of which varies within 40 µm, is made up of rapid solidification cells formed due to the rapid cooling of molten layer of Al-20%Si alloy. The cells are divided by thin interlayers mostly formed by silicon nanoparticles.

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“…This is a technique of surface treatment by concentrated energy flows, e.g. laser emission [1][2][3], electron beams [4,5] and plasma [6,7]. It is characterized by pulse and local effect on the surface; that is supposed to be a significant economic advantage over stationary techniques.…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Zagulyaev,

Konovalov,

Gromov

et al. 2019

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Using methods of physical material studies (scanning electron microscopy and micro X-ray spectral analysis), a study was carried out with focus on alteration of structure and phase composition in surface layers of Al-Si alloy (silumin АК10М2N) treated in electroexplosive alloying with a multiphase plasma jet formed in the process of aluminum foil explosion and carrying particles of Y 2 O 3 weighted powder portion. It was revealed that a porous surface layer with non-homogeneously distributed alloying elements (silicon, yttrium) in it is formed in any conditions of electroexplosive alloying of silumin. Thickness of the modified layer is different, varying 50 to 160 µm, depending on the zone to be examined. The modified surface consists basically of Al, Si and Y. Yttrium in the modified layer is thought to be an indirect evidence of better physical and mechanical properties of the surface layer in comparison with the base material.

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Comparison of the effect of plasma treatment and gamma ray irradiation on PS-Cu nanocomposite films surface

Cited by 16 publications

References 26 publications

The influence of the gas mixing ratio on some characteristics and reaction rate coefficients of Ar/N2 and He/N2 DC plasma

The influence of the gas mixing ratio on some characteristics and reaction rate coefficients of Ar/N2 and He/N2 DC plasma

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

Bulletin of the Polish Academy of Sciences: Technical Sciences

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