C-A-S-H (CaO-Al₂O₃-SiO₂-H₂O) and N-A-S-H (Na₂O-Al₂O₃-SiO₂-H₂O) have a wide range of chemical compositions and structures and are difficult to separate from alkali-activated materials. Therefore, it is difficult to analyze their microscopic properties directly. This paper reports research on the synthesis of C-A-S-H and N-A-S-H particles with an average particle size smaller than 300 nm by apply...

The immediate catalytic conversions of pyrolytic bio-oils from pine sawdust and soybean shell over mesoporous catalysts (silica, alumina, silica-alumina) their combinations with Y zeolite, were studied. effect mesoporosity acidity on the bio-oil deoxygenation conversion into hydrocarbons was investigated. Pyrolysis performed in an integrated pyrolysis–upgrading reactor, for 7 min under a 30-ml/...

Objective: Periodontal disease is an essential phenomenon in human health. Oral pathogens can cause severe break which may show the way to serious issues like chronic obstructive pulmonary and cardiovascular diseases. Therefore, aim of this study evaluate antibacterial effect a series nanoparticles on oral pathogens.Methods: In study, activity such as MWCNT, CuO2, CaCO3, SiO2, Al2O3, MgO ZrO2 a...

A moving pair with two-body contact is the ideal situation assumed in previous analyses. However, all pairs are a three-body state at start of operation or immediately after operation, such as bearings, ball-screws, gears and engines. This work studies influence wear particles (SUJ2), environmental (SiO2 Al2O3) nano-additives (CuO) on tribological characteristics under different particle concen...

The excellent field-effect passivation provided by aluminum oxide (Al2O3) on germanium surfaces relies the high negative fixed charge present in film. However, many applications, a neutral or positive would be preferred. Here, we investigate surface performance and polarity of plasma-enhanced atomic layer deposited (PEALD) silicon (SiO2) Ge. results show that even 3 nm thick PEALD SiO2 provides...

The influence of Al2O3 in the range 10–20 mass% and TiO2 0.55–5 on flow behavior, viscosity, density, surface tension molten industrial blast furnace slag with CaO/SiO2 = 1.13 is investigated using a high-temperature microscope, rotating viscometer, maximum bubble pressure method. measurement results show that acts as network former studied CaO–SiO2–MgO–Al2O3–TiO2 slags. With an increase conten...

A reliable and CMOS-compatible deposition process for amorphous Al2O3 based active photonic components has been developed. Al2O3 films were reactively sputtered, where process optimization was achieved at a temperature of 250 C, with a deposition rate of 8.5 nm/min. With a surface roughness of 0.3 nm over a 1 μm area, background optical losses as low as 0.1 dB/cm were obtained for undoped films...