| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Dong, Hanshan
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (42/42 displayed)
- 2024Growth of Carbon Nanofibers and Carbon Nanotubes by Chemical Vapour Deposition on Half-Heusler Alloys
- 2022Nanoindentation of multifunctional smart compositescitations
- 2022Processing and interpretation of core‐electron XPS spectra of complex plasma‐treated polyethylene‐based surfaces using a theoretical peak model
- 2022Microscopic testing of carbon fiber laminates with shape memory epoxy interlayercitations
- 2021Development of surfaces with antibacterial durability through combined S phase plasma hardening and athermal femtosecond laser texturingcitations
- 2020A study on the effect of ultrashort pulsed laser texturing on the microstructure and properties of metastable S phase layer formed on AISI 316L surfacescitations
- 2020Damage monitoring of surface treated steel under severe rolling contact loading conditionscitations
- 2020Effects of mould wear on hydrophobic polymer surfaces replicated using plasma-treated and laser-textured stainless steel insertscitations
- 2020Comparative Physical–Mechanical Properties Assessment of Tailored Surface-Treated Carbon Fibrescitations
- 2019Numerical and experimental study of single fiber push-out test
- 2019Durability and wear resistance of laser-textured hardened stainless steel surfaces with hydrophobic propertiescitations
- 2019Corrosion Behavior of Active-Screen Plasma Nitrided 17-4 PH (H1150D) Steel in H2S/CO2-Containing Environmentscitations
- 2019Corrosion behavior of active-screen plasma nitrided 17-4 PH (H1150D) steel in H2S/CO2 -containing environments
- 2018Synthesis and characterization of polyurethane/reduced graphene oxide composite deposited on steelcitations
- 2018Combined Surface Hardening and Laser Patterning Approach for Functionalising Stainless Steel Surfacescitations
- 2017Development and microstructure characterization of single and duplex nitriding of UNS S31803 duplex stainless steelcitations
- 2017Susceptibility of Plasma nitrided 17-4 PH to sulfide stress sracking (SSC) in H2S-containing environments
- 2017Scratch test of active screen low temperature plasma nitrided AISI 410 martensitic stainless steelcitations
- 2017Carbon nanofibers functionalized with active screen plasmadeposited metal nanoparticles for electrical energy storage devicescitations
- 2016Towards near-permanent CoCrMo prosthesis surface by combining micro-texturing and low temperature plasma carburisingcitations
- 2015Development of low-friction and wear-resistant surfaces for low-cost Al hot stamping toolscitations
- 2014Cavitation erosion resistance of active screen-low temperature plasma nitrided AISI 410 martensitic stainless steel
- 2014Cavitation erosion resistance and wear mechanisms of active screen low temperature plasma nitrided AISI 410 martensitic stainless steelcitations
- 2014Development of duplex high temperature gas nitriding and low temperature plasma nitriding surface treatments for UNS S31803 duplex stainless steel
- 2013Active screen plasma nitriding enhances cell attachment to polymer surfacescitations
- 2013Nitrogen plasma surface modification enhances cellular compatibility of aluminosilicate glasscitations
- 2013S-phase against S-phase tribopairs for biomedical applicationscitations
- 2012Augmentation of crevice corrosion resistance of medical grade 316LVM stainless steel by plasma carburisingcitations
- 2012Corrosion behaviour of carbon S-phase created on Ni-free biomedical stainless steelcitations
- 2011Active screen plasma surface modification of polycaprolactone to improve cell attachment.citations
- 2011Synthesis and characterization of W reinforced carbon coatings produced by Combined Magnetron Sputtering and Ion Implantation techniquecitations
- 2011Evaluation of the biocompatibility of S-phase layers on medical grade austenitic stainless steels.citations
- 2010Effect of active screen plasma nitriding on the biocompatibility of UHMWPE surfaces
- 2010Tribo-Corrosion behaviour of s-Phase against s-Phase tribopairs
- 2010A study of low temperature mechanical properties and creep behaviour of polypropylene using a new sub-ambient temperature nanoindentation test platformcitations
- 2007Low-temperature plasma surface alloying of medical grade austenitic stainless steel with carbon and nitrogencitations
- 2006Low temperature plasma surface alloying of medical grade austenitic stainless steel with C & N
- 2006The role of sublayer in determining the load bearing capacity of nitrocarburised pure ironcitations
- 2004Surface chemical and nanomechanical aspects of air PIII-treated Ti and Ti-alloycitations
- 2002Surface engineering of Timet 550 with oxygen to form a rutile-based, wear-resistant coatingcitations
- 2001Methods of case hardening
- 2001Duplex surface treatment of high strength Timetal 550 alloy towards high load-bearing capacitycitations
Places of action
| Organizations | Location | People |
|---|
article
Development and microstructure characterization of single and duplex nitriding of UNS S31803 duplex stainless steel
Abstract
In this work, the development of a duplex nitriding (DN) surface treatment combining High Temperature Gas Nitriding (HTGN) and Low Temperature Plasma Nitriding (LTPN) is reported. The microstructure and hardness variation of the duplex treated steel is compared with the properties obtained during single HTGN and single LTPN of UNS S31803 stainless steel. Single LTPN of UNS S31803 was carried out in an Active Screen Plasma Nitriding reactor, at 400 °C for 20 h, in a 75% N2 + 25% H2 atmosphere. Single HTGN of UNS S31803 was carried out at 1200 °C, under a 0.1 MPa high purity N2 gas atmosphere, during 8 h. The developed duplex nitriding (DN) surface treatment consists of a combination of both, HTGN and LTPN treatments, carried out in the same conditions described above.<br/>The microstructure of the as received material was composed by ferrite and austenitic stringers, aligned in the rolling direction. The results showed that LTPN of the UNS S31803 duplex stainless steel promotes the formation of a duplex modulated structure composed by 2.5 μm thick, 1510 ± 52 HV hard, expanded ferrite (αN) regions, and 3.0 μm thick, 1360 ± 81 HV hard, expanded austenite (γN) regions on ferrite and austenite grains, respectively. Intense coherent ε-Fe3N nitride precipitation inside expanded ferrite was observed. ε-Fe3N nitrides precipitated with an orientation relationship [111] αN//[120] ε-Fe3N, leading to increased microhardness of the expanded ferrite regions. After the first step of the duplex nitriding treatment (HTGN) a 550 μm thick, 330 HV hard, nitrogen rich, fully austenitic layer formed at the surface of the specimens, by transformation of ferrite stringers into austenite. The second nitriding step (LTPN) led to the formation of a homogeneous expanded austenite layer, 1227 ± 78 HV on top of the thick fully austenitic layer, formed during the first step. The duplex treatment resulted in a more homogeneous, precipitate-free, microstructure and a better transition between the mechanical properties of the hardened outermost layer and the softer substrate.