Results 31 to 40 of about 15,962 (251)

Mechanism Study on the Difference in Ammonia Decomposition Performance between Co Catalysts Supported on Y2O3 and Al2O3

Shiyou huagong gaodeng xuexiao xuebao
Hydrogen production via ammonia decomposition is a crucial pathway toward achieving a "carbon-neutral society", and its catalytic efficiency is significantly influenced by the regulation of support materials. Based on the similar electronic structures of
Yiru CAO, Huilin XU, Jianyu LI, Yingying JIN, Yan LUO, Hongfeng CHEN, Yong CHEN, Xuesong LIU   +7 more
doaj   +1 more source

Synthesis of Y2O3 and graphite-added copper-based hybrid composites by powder metallurgy: Mechanical properties and tribological behavior [PDF]

Science of Sintering
In the presented study, Y2O3 and graphite-reinforced Cu matrix hybrid composite materials were prepared using the powder metallurgy method. The aim is to compare the microstructure, density, hardness, and wear behavior of composites with different yttria
Birgin Pelin Çağım Tokat, Aydin Hediye, Kaya Esad   +2 more
doaj   +1 more source

Investigations on the microstructure and properties of yttria and silicon carbide reinforced aluminium composites

Heliyon, 2023
Powder Metallurgy (PM) was used to synthesize SiC (0, 5, 10, 15 & 20 wt%) and 1 wt% Yttria (Y2O3) reinforced aluminium (Al) metal matrix composites.
P.P. Shantharaman, V. Anandakrishnan, S. Sathish, M. Ravichandran, R. Naveenkumar, S. Jayasathyakawin, S. Rajesh   +6 more
doaj   +1 more source

Y2O3:Eu micronic particles synthesised by spray pyrolysis: Global modelling and optimisation of the evaporation stage [PDF]

, 2008
There are a number of some major advantages to be gained in processing micronic europium-doped yttrium oxide Y2O3 particles for phosphor applications using spray pyrolysis.
Caussat, Brigitte, Verelst, Marc, Reuge, Nicolas, Dexpert-Ghys, Jeannette   +3 more
core   +1 more source

Wear and corrosion mechanisms of Ni–WC coatings modified with different Y2O3 by laser cladding on AISI 4145H steel

Science and Engineering of Composite Materials, 2022
In order to evaluate the effect of rare earth Y2O3 on the wear and corrosion properties of WC–Ni composite coatings, X-ray diffraction, scanning electron microscopy(SEM), electrochemical polarization curve, electrochemical impedance spectroscopy (EIS ...
Cao Qizheng, Fan Li, Chen Haiyan, Hou Yue, Dong Lihua, Ni Zhiwei   +5 more
doaj   +1 more source

Formation of Y2O3 and Y2O3:Eu(III) by Electrodeposition in Organic Electrolyte.

Journal of the Surface Finishing Society of Japan, 1993
Formation of yttrium oxide by electrodeposition was studied in DMF containing YCl3 and a small amount of water, and rectangular pulse electrodeposition technique was applied. Y2O3 was formed during the electrodeposition, and Y2O3:Eu (III) film was formed also in DMF containing YCl3, EuCl3 and a small amount of water.
MATSUDA, Yoshiharu, IMAHASHI, Kenji, YOSHIMOTO, Nobuko, MORITA, Masayuki, HAGA, Masaki   +4 more
openaire   +2 more sources

Crystallization of microscopic Y2O3 powders by different techniques of fluidization at high temperature [PDF]

, 2006
Ahigh temperature fluidized bed reactor (HTFBR)working at 900 to 1200 ◦Chas been developed to crystallize microscopic yttria (Y2O3) powders synthesized by spray pyrolysis.
Caussat, Brigitte, Verelst, Marc, Joffin, Nicolas, Alavi, Shila   +3 more
core   +1 more source

Preparation of nanocrystalline AlN ceramics by spark plasma sintering

Fenmo yejin jishu
AlN ceramics were prepared by spark plasma sintering (SPS) using the pure nano-AlN powders and the nano-AlN powders doped by 3% Y2O3 (mass fraction) as the raw materials.
ZHAO Dongliang, HE Qing, ZHU Zaiwen, YIN Haiqing, QIN Mingli   +4 more
doaj   +1 more source

In vivo phytotoxic effect of yttrium-oxide nanoparticles on the growth, uptake and translocation of tomato seedlings (Lycopersicon esculentum)

Ecotoxicology and Environmental Safety, 2022
The potential toxicity and ecological risks of rare-earth nanoparticles in the environment have become a concern due to their widespread application and inevitable releases.
Xueping Wang, Xiaojie Liu, Xiao Yang, Lingqing Wang, Jun Yang, Xiulan Yan, Tao Liang, Hans Chr. Bruun Hansen, Balal Yousaf, Sabry M. Shaheen, Nanthi Bolan, Jörg Rinklebe   +11 more
doaj   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source