Oriented Sm-doped CeO 2 thin films on biaxially textured Ni-W substrate produced by ultrasonic spray deposition
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Texture (cosmology)
Deposition
Titanium dioxide (TiO2) and vanadium oxide (V2O5) in different mixing percentage (100, 50, 0)% from them powders as thin film on substrate of glass .the coating thickness was ( 0.37 ±0.03 μm ). Thin films were inspection by microphotographs with scanning electron microscopy (SEM) and x-ray diffraction (XRD). The results showed that thin films was prepared crystalline and also the compound (tio2, v2o5), and the structure was regular and smooth.
Titanium Dioxide
Vanadium Oxide
Titanium oxide
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We have investigated the structural, electrical and optical properties of Ga-doped ZnO (GZO) thin films prepared by RF magnetron sputtering with laboratory-made ZnO targets containing 1, 3, 5, 7 wt% of $Ga_2O_3$ powder as a doping source. The GZO thin films show the typical crystallographic orientation with c-axis regardless of $Ga_2O_3$ content in the targets. The $3,000{\AA}$ thick GZO thin films with the lowest resistivity of $7{\times}10^{-4}{\Omega}{\cdot}cm$ are obtained by using the GZO ($Ga_2O_3$ = 5 wt%) target. Optical transmittance of all films shows higher than 80% at the visible region. The optical energy band gap for GZO films increases as the carrier concentration ($n_e$ ) in the film increases.
Cavity magnetron
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Photoelectrochemistry
Photoelectrochemical cell
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Polypropylene, carbon, aramid and polyethylene fibers reinforced cement composites were fabricated respectively. Their fracture behaviors were observed using scanning electron microscopy and their interfacial bondings between fiber and matrix were discussed in detail.
Aramid
Polypropylene
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SiC short fiber(as-received and treated with couple agent) strengthened polytetrafluoroethylene(PTFE) composites were prepared through mixing and cold pressing.The mechanical,friction and wear properties of the composites were tested.The effects of the surface treatment on the performance of the composites were investigated.The fracture surfaces by tensile stress were observed by using a scanning electron microscope(SEM).The strengthen mechanism for the composites was proposed.The results indicated that the tensile strength,impact strength,and friction and wear properties of the composites with surface treated SiC fiber are higher than those with as-received SiC fiber.SEM observation of fracture surfaces showed that poor bonding interface with gaps between untreated SiC fiber and the PTFE matrix is responsible for the lower performances of the corresponding composites.The couple agent surface treated SiC fiber has a strong adhesion with PTFE so that less SiC fiber were pull out during tensile process.
Polytetrafluoroethylene
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Sputtered NiTi shape memory alloy(SMA) thin film for microactuator was studied.The processes of fabrication and texture that affect structure and transformation characteristics of thin films were investigated.Microdevice based on SMA thin film was fabricated,and its deformation behavior was analyzed.The results show that the crystallized NiTi thin films with a strong texture of A(110) can be sputter-deposited by in situ heating;The NiTi beam shows a recovering ratio of 0.76% due to the existence of texture.
Nickel titanium
Microactuator
Texture (cosmology)
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Spark Plasma Sintering
Hot isostatic pressing
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Toughening
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Cu2Ta4O12 (CTaO) thin films were successfully deposited on Si(100) substrates by pulsed-laser deposition technique. The crystalline structure and the surface morphology of the CTaO thin films were strongly affected by substrate temperature, oxygen pressure and target - substrate distance. In general during deposition of CTaO the formation of a Ta2O5 phase appeared, on which CTaO grew with different orientations. We report on the experimental set-up, details for film deposition and the film properties determined by SEM, EDX and XRD.
Pulsed Laser Deposition
Deposition
Morphology
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