Zobrazeno 1 - 10
of 1 037
pro vyhledávání: '"Keddam M."'
Autor:
Elias-Espinosa M., Keddam M., Ortiz-Domínguez M., Arenas-Flores A., Zuno-Silva J., Cervantes-Sodi F., Reyes-Retana J. A.
Publikováno v:
High Temperature Materials and Processes, Vol 38, Iss 2019, Pp 219-228 (2019)
The AISI 1518 steel was pack-borided in the temperature range 1123–1273 K for a treatment ranging from 2 to 8 h. A compact single boride layer (Fe2B) was formed at the surface of the AISI 1518 steel using the mixture of powders composed of 20 % B4C
Externí odkaz:
https://doaj.org/article/5e1c5fd668004c3caa5d8c230423023f
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 54, Iss 3, Pp 361-367 (2018)
In this study, an alternative approach based on the integral method was proposed to estimate the values of boron diffusion coefficients in the Fe2B layers grown at the surface of Armco iron. The set of differential algebraic equations (DAE) system wa
Externí odkaz:
https://doaj.org/article/837dec8413cc4e1cbbc2493c711c3b86
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 53, Iss 1, Pp 47-52 (2017)
AISI 316 LM samples were plasma nitrided at a temperature of 380°C for different times between 0.5 and 8 h in a 85%N2- 15%H2 gas mixture. Different experimental techniques such as: optical microscopy (OM), X- ray diffraction (XRD ) and glow disch
Externí odkaz:
https://doaj.org/article/c8e62fdeffb342b1ac6de0f2442f55d3
Autor:
Flores-Rentería M. A., Ortiz-Domínguez M., Keddam M., Damián-Mejía O., Elias-Espinosa M., Flores-González M. A., Medina-Moreno S. A., Cruz-Avilés A., Villanueva-Ibañez M.
Publikováno v:
High Temperature Materials and Processes, Vol 34, Iss 1, Pp 1-11 (2015)
This work focused on the determination of boron diffusion coefficient through the Fe2B layers on AISI 1026 steel using a mathematical model. The suggested model solves the mass balance equation at the (Fe2B/substrate) interface. This thermochemical t
Externí odkaz:
https://doaj.org/article/08bd1a37ce2b436885adda87f6531080
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 51, Iss 1, Pp 49-54 (2015)
In this work, the kinetics of formation of the boride layers (FeB/Fe2B), formed on the X200CrMoV12 steel used for the coldworking, was investigated. The boriding treatment was carried out in the powder mixture consisting of 5%B4C, 5% NaBF4 and 90%
Externí odkaz:
https://doaj.org/article/afe40761416e4cfb93e2c284452b024d
Autor:
Zuno-Silva J., Ortiz-Domínguez M., Keddam M., Elias-Espinosa M., Damián-Mejía O., Cardoso-Legorreta E., Abreu-Quijano M.
Publikováno v:
Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 50, Iss 2, Pp 101-107 (2014)
In the present work, a diffusion model was suggested to study the growth kinetics of Fe2B layers grown on the AISI 1045 steel by the pack-boriding treatment. The generated boride layers were analyzed by optical microscopy and X-ray diffraction ana
Externí odkaz:
https://doaj.org/article/7d8b67407a874b3ba43a95f961d8acda
Publikováno v:
MATEC Web of Conferences, Vol 3, p 01012 (2013)
Externí odkaz:
https://doaj.org/article/aa1b678b046045f2b9cc54d9bfa6d9ab
Estimation of adhesion energy of alumina scales on FeCrAl alloys: effect of the TiO2 sol-gel coating
Autor:
Chegroune R., Keddam M.
Publikováno v:
MATEC Web of Conferences, Vol 3, p 01038 (2013)
In this experimental work, the effect of sol-gel TiO2 coating on adhesion energy of alumina scales formed on FeCrAl alloys was investigated. The adhesion energy was evaluated by means of a tensile test in the SEM chamber for the samples oxidized in a
Externí odkaz:
https://doaj.org/article/984272d8fb2a44b39d5400f59355075d
Autor:
Keddam, M.1 (AUTHOR) keddam@yahoo.fr, Kulka, M.2 (AUTHOR), Makuch, N.2 (AUTHOR), Ostrovska, K.3 (AUTHOR), Maldzinski, L.3 (AUTHOR)
Publikováno v:
Metal Science & Heat Treatment. Sep2023, Vol. 65 Issue 5/6, p370-378. 9p.
Autor:
Contla-Pacheco, A.D., Keddam, M., Lartundo-Rojas, L., Ortega-Avilés, M., Mejía-Caballero, I., Campos-Silva, I.
Publikováno v:
In Surface & Coatings Technology 25 August 2021 420