نتایج جستجو برای: sio2 tio2
تعداد نتایج: 35108 فیلتر نتایج به سال:
Titanium is widely used in biomedical applications. Its mechanical properties and biocompatibility, conferred by a layer of oxide present on its surface, make titanium the material of choice for various implants (artificial hip and knee joints, dental prosthetics, vascular stents, heart valves). Furthermore, the high refractive index of titanium oxide is advantageous in biosensor applications b...
High-quality Ti-doped ZnO films were grown on Si, thermally grown SiO2, and quartz substrates by atomic layer deposition (ALD) at 200°C with various Ti doping concentrations. Titanium isopropoxide, diethyl zinc, and deionized water were sources for Ti, Zn, and O, respectively. The Ti doping was then achieved by growing ZnO and TiO2 alternately. A hampered growth mode of ZnO on TiO2 layer was co...
In this study, B modified silicide coatings were prepared on Nb-Si based alloy with Al2O3 or SiO2 inert-filler by pack cementation technology. Both primarily consisted of a (Nb,X)Si2 (Nb,X)B2 + outer layer. After oxidation at 1250 °C for 100 h, the showed good resistance due to formation dense silica. The products coating SiO2, TiO2 and Cr2O3, while that TiO2, HfO2. different may be process the...
یکی از شاخه های رو به رشد دانش در دنیای امروز نانو فن آوری است. رشد فن آوری به قدری سریع بوده است که جای خود را در تمامی رشته ها باز کرده است. مبحث نانو پوشش ها از زیر مجموعه های این فن آوری است که به علت کاربرد فراوان رشد چشمگیری داشته است. پوشش های اکسیدهای فلزی به ویژه لایه های نازک دی اکسید تیتانیوم بر روی شیشه از انواع نانو پوشش ها است که به منظور ایجاد و بهبود ویژگی های سطحی از قبیل خود ت...
TiO2-SiO2 photocatalytic nanostructure film on windshield for self-cleaning purposes was prepared via sol–gel dip-coating method. TiO2 films were prepared on automotive glass pre-coated with a SiO2 layer by a dip-coating method followed by annealing at 500 °C for 30min. The films were characterized using X-ray diffraction XRD and scanning electron microscopy SEM, FE-SEM techniques. The TiO2-SiO...
To understand and clarify the formation mechanisms evolution of complex inclusions in Ti-Ca deoxidized offshore structural steel, industrial steel were systematically investigated. The number density total generally decreased from Ladle Furnace (LF), Vacuum Degassing (VD), Tundish to final product except for Ti Ca addition. major during refining process CaO-Al2O3-SiO2-(MgO)-TiOx CaO-Al2O3-SiO2....
Model catalysts consisting of Au and Ag clusters of varying size have been prepared on single crystal TiO2(110) and ultra-thin films of TiO2, SiO2 and Al2O3. The morphology, electronic structure, and catalytic properties of these Au and Ag clusters have been investigated using low-energy ion scattering spectroscopy (LEIS), temperature-programmed desorption (TPD), X-ray photoelectron spectroscop...
The development of high-efficiency photocatalysts plays an important role in the application solar energy conversion. Titanium dioxide (TiO2) with anatase crystalline phase is well-known as semiconductor thin layers for cells. This work has constructed a novel TiO2 hollow sphere (HST) 2-step synthesis. first step coating SiO2 template to build core-shell SiO2@TiO2 (CSST). second etching via son...
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