Results 21 to 30 of about 4,656 (308)

Titanium diffusion coatings on austenitic steel obtained by the pack cementation method [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The surface of specimens made of 316L austenitic steel was modified by titanium diffusion. The diffusion coatings were obtained by packing in a powder mixture consisting of titanium powder, NH4Cl and Al2O3 powder. The procedure required high temperatures,
MIRELA BRITCHI   +3 more
doaj   +3 more sources

Multilayer-Forming Behavior of Cr Nitrides and Carbides for Thermoreactive Deposition

open access: yesMetals, 2018
The effect of a nitride layer on the forming behavior of CrN and (Cr, Fe)7C3 multilayers for thermoreactive deposition (TRD) was investigated. Plasma nitriding followed by TRD (PN-TRD) produced a larger coating thickness than the case of direct TRD with ...
Kyeongmo Park   +3 more
doaj   +1 more source

Improving Oxidation Resistance of Stainless Steel (AISI 316L) by Pack Cementation [PDF]

open access: yesEngineering and Technology Journal, 2007
The cyclic oxidation resistance of austenitic stainless steel (AISI 316L) can be improved by enriching the surface composition in Al and Si using pack cementation process.
Ali Ahmad, Khedeir Muna, Mohammed Rajab
doaj   +1 more source

Oxidation of Simple and Pt-Modified Diffusion Coating on Inconel Alloy 600 in Air [PDF]

open access: yesEngineering and Technology Journal, 2005
In this work the oxidation behavior of both Inconel alloy 600 and coated system (Pt-modified aluminide coating) was investigated in air in the temperatures range 700-1000 C.
Ali Ahmed
doaj   +1 more source

Tidal flat deposits of the Lower Proterozoic Campbell Group along the southwestern margin of the Kaapvaal Craton, Northern Cape Province, South Africa [PDF]

open access: yes, 1991
Lower Proterozoic stromatolites and associated clastic carbonate deposits of the Campbell Group, from the southern margin (Prieska area) of the Kaapvaal Craton, northern Cape Province, are described.
Aigner   +66 more
core   +1 more source

Formation of Alumina Layer on Fe-Cr-Ni Alloy by Pack Cementation and Oxidation

open access: yesHigh Temperature Materials and Processes, 2011
To protect Fe-Cr-Ni based alloy from high temperature corrosion in carbon containing atmosphere at elevated temperature, alumina coating was prepared on the Fe-Ni-Cr alloy substrate by pack cementation and oxidation.
Xing Linlin   +5 more
doaj   +1 more source

Oxidation Properties of Steel-T22 Alloy Coated by Simultaneous Ge-Doped 699 Chromizing-Siliconizing Process [PDF]

open access: yesEngineering and Technology Journal, 2008
Diffusion coating was carried out at 1050 oC for 6 h under argon atmosphere bysimultaneous Ge-doped chromizing-siliconizing process on low alloy steel type-T22.Cyclic oxidation tests were conducted for the uncoated and for the chromizing –Siliconizing ...
Ahmed A. Moosa
doaj   +1 more source

Note on the importance of hydrocarbon fill for reservoir quality prediction in sandstones [PDF]

open access: yes, 2002
Oil emplacement retarded the rate of quartz cementation in the Brae Formation deep-water sandstone reservoirs of the Miller and Kingfisher fields (United Kingdom North Sea), thus preserving porosity despite the rocks' being buried to depths of 4 km and ...
Fallick, A.E.   +3 more
core   +1 more source

Effective time of a diffusion source in a pack cementation process on the AZ91D magnesium alloy

open access: yesJournal of Materials Research and Technology, 2023
The powder thermal diffusion alloying method is an important method to fabricate intermetallic coatings on magnesium alloy substrates. The diffusion source, the diffusion time and the diffusion temperature are key parameters for a diffusion alloying ...
Dongzhu Lu   +5 more
doaj   +1 more source

Study on the Structure and Tribological Behavior of Zn - Ni Coating by Pack - Cementation [PDF]

open access: yesCailiao Baohu, 2021
In order to improve the friction and wear properties of 45 steel’s surface surface, a Zn - Ni coating was prepared on 45 steel’s surface by pack - cementation method.
ZHANG Jin, LIN Yuan - hua, GUO Meng - xin, XIANG - Huan, RAN Xue - lin, HUANG Min
doaj   +1 more source

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