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Yinghao Sun and Frank Cheng
Hydrogen embrittlement (HE) of steel pipelines in high-pressure gaseous environments is a potential threat to the pipeline integrity. The occurrence of gaseous HE is subjected to associative adsorption of hydrogen molecules (H2) at specific ?active sites...
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Liudmila A. Yolshina, Aleksander G. Kvashnichev, Dmitrii I. Vichuzhanin and Evgeniya O. Smirnova
The development of novel methods for industrial production of metal-matrix composites with improved properties is extremely important. An aluminum matrix reinforced by ?in situ? a-Al2O3 nanoparticles was fabricated via direct chemical reaction between mo...
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Airingas ?uopys, Viktorija Grigaitiene, Liutauras Marcinauskas, Romualdas Ke?elis, Rolandas Uscila and Mindaugas Aikas
In this study, alumina coatings were formed using atmospheric plasma spraying, increasing the torch power from 29.4 to 45.1 kW. The surface morphology of the coatings was determined using scanning electron microscopy; the elemental composition was examin...
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Zeying Bao and Fulin Shang
The ideal mechanical shear properties and sliding characteristics of c-ZrO2(001)/a-Al2O3(11¯02" role="presentation">11_0211¯02
1
1
¯
02
) interfaces are examined through simulated shear deformations using first-principles calculations. We invest...
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Valeria Subbotin?,Oleg S?b?l,Valery Belozerov,Alexander Subbotin,Yuliya Smyrnova
Pág. 14 - 23
The effect of electrolysis conditions with different electrolyte compositions on the growth kinetics, phase-structural state, and hardness of coatings obtained by microarc oxidation (MAO) on the D16 aluminum alloy (base ? aluminum, main impurity Cu) was ...
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Ann Karakurkchi,Mykola Sakhnenko,Maryna Ved?,Mykhailo Tulenko,Anatolii Dzheniuk
Pág. 44 - 55
Technological approaches to surface electrochemical treatment of aluminum alloys are analyzed. It is shown that directed modification of the carrier surface allows expanding the functional properties of the treated material. The mechanisms of treatment o...
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Abdulhamid Hamza,Alhaji Saleh Zanna Umara,Diya'uddeen Basheer Hasan
Pág. 68 - 75
Present work was aimed at the development of a-Al2O3 supported ZnFe2O4 visible-light responsive photocatalysts. ZnFe2O4 and a-Al2O3 supported ZnFe2O4 were synthesized using co-precipitation method followed by calcination at 500 °C. The synthesized photoc...
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Hong Thi Thu Nguyen, How-Ran Chao and Kuan-Chung Chen
In this study, the ability of a bench-scale simulated constructed wetland (CW) to remove organic matter (OM) and tetracycline (TC) from water was examined. The performance of CW was evaluated by varying the initial concentrations of the target compounds ...
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Muhammad Ali Abro and Dong Bok Lee
The 9Cr-1Mo steel (ASTM P91) was hot-dip aluminized, and its microstructural changes during oxidation were studied. Before oxidation, the coating consisted of (Al-rich topcoat containing a small amount of Al5Fe2 and Al13Fe4)/(Al13Fe4-rich, Al13Fe4-contai...
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Rosa Maria Cripa Moreno, Ricardo Cardoso de Oliveira, Sueli Teresa Davantel de Barros
Pág. 413 - 419
This study accomplished a comparison between microfiltration and addition of coagulating agents to clarify sugar cane juice. Microfiltration tests were carried out using ceramic tubular membranes made with TiO2/a-Al2O3, with pore diameter of 0.2; 0.4 and...
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