Two-dimensional (2D) nanoscale oxides have attracted research interest owing to their electronic, magnetic optical and catalytic properties. If they could be manufactured on a large scale, 2D oxides would be attractive for applications ranging from electronics to energy conversion and storage. Herein, we report facile fabrication of oxide nanosheets by rapid thermal annealing of corresponding h...

Chromium oxide coatings are chemically inert, have high mechanical strength, hardness and good optical characteristics; therefore, they have been widely used in many applications including corrosion protection, wear resistance, electronics, and optics. Cr2O3 is well suited for wear resistance applications, as it is one of the hardest oxides with 29.5 GPa hardness. Several deposition techniques ...

In order to improve the high-temperature oxidation resistance of refractory high-entropy alloys (RHEAs), we used micro-arc (MAO) technology prepare ceramic coatings on AlTiCrVZr alloy, and effects voltage microstructure were studied. this paper, MAO was adjusted 360 V, 390 420 450 V. The microstructure, elements distribution, chemical composition, surface roughness studied by scanning electron ...

Thin oxide films formed on commercial metal/porcelain Ni-Cr alloy containing Be, were studied by using the electron probe microanalyzer (EPMA) with the glass lining technique and by the X-ray diffraction method with the Debye-Scherrer camera. Oxidation was restricted to form thin oxide films as follows; at 700•Ž for 5 minutes in air, at 1,000•Ž for 2 minutes in air, and at 1,000•Ž for 40 minute...

The thermally induced reaction of chlorinated ethanes on the nearlystoichiometric α-Cr2O3 (1012) surface results in the formation of gas phase hydrocarbons including ethylene, ethane, acetylene, 2-butene, 2-butyne and dihydrogen, and deposition of surface chlorine adatoms. No surface carbon or combustion products are observed in any reactions indicating no thermally induced C-C bond cleavage oc...

We have previously shown that oxide semiconductors (TiO2, NiO, Cr2O3, etc.) exhibit remarkable catalytic effects when heated at high temperatures of about 350–500 C and that the effect has been interpreted in terms of the formation of a large number of highly oxidative holes caused by thermal excitation of semiconductors. This prompted us to utilize this technology for complete removal of volat...

A series of chromium oxides (Cr2O3) nanoparticles supported on different carbonaceous material, namely: graphene, graphene oxide (GO) and graphite, were synthetized by precipitation the salt precursors with precipitant (ammonia) subsequent thermal treatment. The catalytic activity these composites Cr2O3 have been analysed Koutecky-Levich (KL) rotating ring-disc electrode methods results discuss...

Abstract: Electroless Nickel (EN) composite coatings embedded with Cr2O3 and/or MoS2 particles were deposited to combine the characters of both Cr2O3 and MoS2 into one coating in this study. The effects of the co-deposited particles on corrosion behavior of the coating in 3.5% NaCl media were investigated. The results showed that both Ni-P and Ni-P composite coatings had significant improvement...