scholarly journals Influence of minor additions to Fe-Mn-Al alloys in an oxidizing environment - Role of a cerium oxide modified surface on silicon containing alloys

1993 ◽  
Vol 03 (C9) ◽  
pp. C9-309-C9-315 ◽  
Author(s):  
H. Buscail ◽  
P. Sotto ◽  
J. P. Larpin
Keyword(s):  
Cerium Oxide ◽  
Al Alloys ◽  
Modified Surface

The role of Kirkendall porosity in determining β → δ transformation types in Nb-Ti-Al alloys

2016 ◽  
Vol 60 ◽  
pp. 108-112 ◽  
Author(s):  
Zhiwu Shi ◽  
Hua Wei ◽  
Hongyu Zhang ◽  
Tao Jin ◽  
Xiaofeng Sun ◽  
...  
Keyword(s):  
Al Alloys ◽  
Kirkendall Porosity

scholarly journals The Roll of NaPSS Surfactant on the Ceria Nanoparticles Embedding in Polypyrrole Films

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Simona Popescu ◽  
Mihaela Mîndroiu ◽  
Daniela Cabuzu ◽  
Cristian Pîrvu
Keyword(s):  
Cerium Oxide ◽  
Antibacterial Effect ◽  
Electrochemical Behaviour ◽  
Titanium Substrate ◽  
Crystalline Form ◽  
Polymeric Films ◽  
Ceria Nanoparticles ◽  
Polypyrrole Films ◽  
Polymerization Conditions

Cerium oxide nanoparticles (CeO2NPs) in crystalline form have been synthesized by a coprecipitation method. CeO2nanoparticles were then embedded in polypyrrole (PPy) films during the electropolymerization of pyrrole (Py) on titanium substrate. The influence of poly(sodium 4-styrenesulfonate) (NaPSS) surfactant used during polymerization on the embedding of CeO2NPs in polypyrrole films was investigated. The new films were characterized in terms of surface analysis, wettability, electrochemical behaviour, and antibacterial effect. The surface and electrochemical characterization revealed the role of surfactant on PPy doping process cerium oxide incorporation. In the presence of surfactant, CeO2NPs are preferentially embedded in the polymeric film while, without surfactant, the ceria nanoparticles are quasiuniformly spread as agglomerates onto polymeric films. The antibacterial effect of studied PPy films was substantially improved in the presence of cerium oxide and depends by the polymerization conditions.

scholarly journals Role of trivalent La and Nd dopants in lattice distortion and oxygen vacancy generation in cerium oxide nanoparticles

2006 ◽  
Vol 88 (24) ◽  
pp. 243110 ◽  
Author(s):  
Swanand Patil ◽  
Sudipta Seal ◽  
Yu Guo ◽  
Alfons Schulte ◽  
John Norwood
Keyword(s):  
Oxygen Vacancy ◽  
Cerium Oxide ◽  
Lattice Distortion ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Vacancy Generation

Role of anodic oxide films in the corrosion of aluminum and its alloys

2018 ◽  
Vol 36 (1) ◽  
pp. 35-54 ◽  
Author(s):  
Hideaki Takahashi ◽  
Makoto Chiba
Keyword(s):  
Synergistic Effects ◽  
Pure Water ◽  
Pure Aluminum ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Al Alloys ◽  
Anodic Oxide Films ◽  
Pore Sealing ◽  
Barrier Type

AbstractAnodic oxide films on aluminum are classified into two groups: porous-type anodic oxide films (PAOF) and barrier-type anodic oxide films (BAOF). The present paper is a review of the corrosion of pure aluminum (Al) and Al alloys covered with PAOF and BAOF, focusing on the role of anodic oxide films in the process of corrosion. Several topics are discussed in detail, including (a) changes in the dissolution mode of PAOF in acidic media by pore sealing, (b) hydration and dissolution of BAOF in pure water and neutral solutions containing organic and inorganic electrolytes, (c) pitting corrosion during the cathodic polarization of Al covered with PAOF and BAOF, (d) corrosion of PAOF-covered Al/Bi/Sn alloys in alcohols at 142°C, and (e) synergistic effects of Cl− and Cu2+ ions in the corrosion of PAOF-covered Al alloys in aqueous solutions.

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