scholarly journals Amperometric Urea Biosensor Based Metallic Substrate Modified with a Nancomposite Film

10.5772/52440 ◽  
2013 ◽  
Author(s):  
Florina Branzoi ◽  
Viorel Branzoi
Keyword(s):  
Metallic Substrate

Transmission Electron Microscopic Observations of Al3Li and Al3Ti Precipitation in A Rapidly Solidified Al-3Li-0.2Ti ALLOY

1980 ◽  
Vol 38 ◽  
pp. 336-337
Author(s):  
J. E. O’Neal ◽  
K. K. Sankaran ◽  
S. M. L. Sastry
Keyword(s):  
Rapid Solidification ◽  
Metallic Substrate ◽  
Deformation Characteristics ◽  
Phase Decomposition ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Supersaturated Solid Solutions ◽  
Transmission Electron Microscopic ◽  
Rapidly Solidified ◽  
Microstructural Homogeneity

Rapid solidification of a molten, multicomponent alloy against a metallic substrate promotes greater microstructural homogeneity and greater solid solubility of alloying elements than can be achieved by slower-cooling casting methods. The supersaturated solid solutions produced by rapid solidification can be subsequently annealed to precipitate, by controlled phase decomposition, uniform 10-100 nm precipitates or dispersoids. TEM studies were made of the precipitation of metastable Al3Li(δ’) and equilibrium AL3H phases and the deformation characteristics of a rapidly solidified Al-3Li-0.2Ti alloy.

New Perovskite based Catalytic Converter using Metallic Substrate

1999 ◽  
Author(s):  
Nitin K. Labhsetwar ◽  
A. Sohoni ◽  
M.M. Deshmukh ◽  
R.B. Biniwale ◽  
R. Kumar ◽  
...  
Keyword(s):  
Catalytic Converter ◽  
Metallic Substrate

scholarly journals Reaction of cis- and trans-Dichlorotetra(Dimethylsulfoxide)Ruthenium(II) With the Antiviral Drug Acyclovir

2000 ◽  
Vol 7 (6) ◽  
pp. 325-334 ◽  
Author(s):  
Aglaia Koutsodimou ◽  
Giovanni Natile
Keyword(s):  
Trans Isomer ◽  
Early Stage ◽  
Antiviral Drug ◽  
Metallic Substrate ◽  
Purine Base ◽  
Coordination Environment ◽  
Molar Ratios ◽  
Discrete Amount ◽  
Cis And Trans ◽  
Cis Isomer

NMR was used to investigate the reaction of cis- and trans-[RuCl2(DMSO)4] with the antiviral drug acyclovir, a guanine derivative containing the acyclic (2-hydroxo) ethoxymethyl pendant linked to N(9). Studies were performed in aqueous solutions at ambient temperature and at 37 °C, and at various molar ratios. Both isomers yielded two compounds, a monoadduct and a bisadduct, the relative yields being dependent upon the metal to ligand concentration ratios. The products derived from the two Ru isomers displayed identical NMR spectra, suggesting that they have the same coordination environment, however the rate of formation of the monoadduct was higher in the case of the trans isomer than in the case of the cis isomer, while the rate of conversion of the monoadduct into the bisadduct appeared to be similar in both cases. As a consequence in the case of the trans isomer there is accumulation of monoadduct in the early stage of the reaction, whose concentration afterwards decreases with the progress of the reaction. As for platinum, also for ruthenium the preferred binding site is N(7) of the purine base, however, in the case of ruthenium a discrete amount of bisadduct is formed even in the presence of an excess of metallic substrate with respect to the acyclovir ligand; under similar conditions a platinum substrate would have given, nearly exclusively, the monoadduct.

Effect of a Low-Concentration H3PO4 Solution Application on High-Temperature Behaviour of Ti and Ti-Al Alloys

2009 ◽  
Vol 289-292 ◽  
pp. 69-75 ◽  
Author(s):  
S.Y. Brou ◽  
G. Bonnet ◽  
Jean Luc Grosseau-Poussard
Keyword(s):  
High Temperature ◽  
Titanium Content ◽  
Phosphoric Acid Solution ◽  
Al Alloys ◽  
Metallic Substrate ◽  
Aluminium Content ◽  
Barrier Effect ◽  
Time Increase ◽  
Heating Period ◽  
Temperature Behaviour

TiAl, TA6V and titanium coupons were treated by a phosphoric acid solution by dipping. They were then submitted to a heat treatment and, in the case of TiAl and TA6V, to high temperature discontinuous oxidation under laboratory air. The H3PO4 treatment allowed to decrease the mass gains for TiAl and TA6V, in particular during the first 100 hours. XRD analyses demonstrated for the three substrates the formation of a pyrophosphate layer during the heating period. This pyrophosphate evolved towards TiO2 with oxidation time increase, quicker for smaller aluminium content (or higher titanium content) in the metallic substrate. The decrease of mass gains was attributed to a diffusion barrier effect of the pyrophosphate layer as long as it was present.

Potentiality of UV-cured hybrid sol–gel coatings for aeronautical metallic substrate protection

2013 ◽  
Vol 227 ◽  
pp. 32-37 ◽  
Author(s):  
Sophie Senani ◽  
Elisa Campazzi ◽  
Martine Villatte ◽  
Catherine Druez
Keyword(s):  
Sol Gel ◽  
Metallic Substrate ◽  
Substrate Protection

Surface Engineering of Flexible Metallic Substrate by SDP Gd‐Zr‐O layer for IBAD ‐MgO Templates

2018 ◽  
Author(s):  
Jingyuan Chu ◽  
Yue Zhao ◽  
Guangyu Jiang ◽  
Wei Wu ◽  
Zhiwei Zhang ◽  
...  
Keyword(s):  
Surface Engineering ◽  
Metallic Substrate
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