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Wyszukujesz frazę "Allaoui, M." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Characterization of Alumina-Titania Coatings Produced by Atmospheric Plasma Spraying on 304 SS Steel
Autorzy:
Djendel, M.
Allaoui, O.
Boubaaya, R.
Powiązania:
https://bibliotekanauki.pl/articles/1031278.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
alumina-titania coatings
atmospheric plasma spraying
304 stainless steel
process parameters
SEM
microstructure
Opis:
The alumina-titania coatings produced by atmospheric plasma spraying are being developed for a wide variety of applications that require resistance to wear, erosion, cracking, and spallation. Consideration of parameters setting will develop reliable coatings with high performance properties for demanding coating application. Al₂O₃-3 wt% TiO₂ was used as the main coating. Ni 20%Cr₆Al powder was used as bond coat coating onto AISI 304 stainless steel substrate using Sulzer-Metco plasma spray system 9MC equipment.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 538-540
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Boronizing on the Oxidation Resistance of 316L Stainless Steel
Autorzy:
Khenifer, M.
Allaoui, O.
Taouti, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031181.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
316L stainless steel
boronizing
high temperature oxidation
oxidation kinetics
rate constant
Opis:
The effect of boronizing treatment on oxidation at high temperature on 316L stainless steel was studied at 850, 900, 950, and 1000°C in air, for holding times between 0.25 and 24 h. The oxidation resistance of unboronized and boronized specimens was studied isothermally by thermogravimetric analyzer. The oxidation rate constant represented as a parabolic rate constant K_{p} was evaluated. Optical microscopy, X-ray diffraction, and the scanning electron microscopy were used for surface characterizations. The experimental results show that boronized coating increases the resistance of stainless steel 316l about twice and prevents oxygen from penetrating into the stainless steel substrate at the temperatures between 850 and 1000°C.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 518-520
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of Chromium Boride Layers on Carbon Steel with Conversion Treatment: Chromium Deposition + Diffusion Annealing
Autorzy:
Boubaaya, R.
Benarioua, Y.
Allaoui, O.
Djendel, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031720.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
carbon steel
boriding
chromium plating
diffusion annealing
chromium boride
Opis:
The present study has been conducted in order to obtaining chromium boride layers on carbon steel using a conversion processing comprising the following steps: boriding treatment in order to increase the amount of boron atoms in the steel surface, deposition of a thin layer of pure chromium using electrolytic method, and finally an annealing treatment for boron diffusion and formation of boride layer until complete transformation of chromium layer. Depending on the method used (chromium deposition followed by boriding or boriding followed by chromium deposition) and the holding time, the partial or complete conversion is obtained as a result of the diffusion process. The role of the annealing temperature on transformation rates of chromium into chromium boride films was investigated. It is shown that for 1 h at 900°C, the chromium layer is totally transformed. The scanning electron microscopy analysis and X-ray diffraction showed the presence of CrB and CrB₂ chromium borides in addition of FeB and Fe₂B iron borides.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 541-543
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Continuous spectrum of Steklov nonhomogeneous elliptic problem
Autorzy:
Allaoui, M.
Powiązania:
https://bibliotekanauki.pl/articles/254696.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Steklov problem
critical point theorem
p(x)-Laplacian
Opis:
By applying two versions of the mountain pass theorem and Ekeland's variational principle, we prove three different situations of the existence of solutions for the following Steklov problem: [formula] where Ω ⊂ RN (N ≥ 2) is a bounded smooth domain and p, q: Ω → (1, + ∞) are continuous functions.
Źródło:
Opuscula Mathematica; 2015, 35, 6; 853-866
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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