نتایج جستجو برای: Nanostructured coating

تعداد نتایج: 53101  

Journal: :journal of ultrafine grained and nanostructured materials 2014
ahmad keyvani mohsen saremi mahmoud heydarzadeh sohi

conventional and nanostructured ysz coatings were deposited on the in-738 ni super alloy by the atmospheric plasma spray technique. the oxidation was measured at 1100°c in an atmospheric electrical furnace. according to the experimental results the nanostructured coatings showed a better oxidation resistance than the conventional ones. the improved oxidation resistance of the nanocoating could ...

Journal: :international journal of nano dimension 0
p. doodman department of material engineering, science and research branch, islamic azad university, tehran, iran m. a. faghihi-sani department of material engineering, science and research branch, islamic azad university, tehran, iran n. barati 2department of materials science and engineering, sharif university of technology, azadi street, p.o. box 11365-9466, tehran, iran a. afshar 1department of material engineering, science and research branch, islamic azad university, tehran, iran.

nanostructured alumina thin films were coated on stainless steel by sol-gel dip coating method. in order to prevent crack formation, al2o3 films were kept in a solvent bath immediately after coating to reduce the rate of drying. effects of calcination temperature and withdrawal speed on structural properties were analyzed using xrd and sem. topography and thickness of coatings were analyzed by ...

Conventional and nanostructured YSZ coatings were deposited on the IN-738 Ni super alloy by the atmospheric plasma spray technique. The oxidation was measured at 1100°C in an atmospheric electrical furnace. According to the experimental results the nanostructured coatings showed a better oxidation resistance than the conventional ones. The improved oxidation resistance of the nanocoating could ...

In this study the bioactivity of hydroxyapatite/poly(ε-caprolactone)–poly(ethylene glycol) bilayer coatings on Nitinol superelastic alloy was investigated. The surface of Nitinol alloy was activated by a thermo-chemical treatment and hydroxyapatite coating was electrodeposited on the alloy, followed by applying the polymer coating. The surface morphology of coatings was studied using FE-SEM and...

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    Nowadays, suitable protective properties of tantalum nitride coatings, such as hardness, abrasion resistance and high corrosion resistance lead to increasing its application in medical engineering and improving the biological behavior of titanium and its alloys. In this research, nanostructured tantalum nitride coating was applied on the NiTi alloy by magnetron sputtering method. Then, the ...

Journal: :Journal of New Technology and Materials 2014

2009
A. Teleki B. Buesser M. Heine F. Krumeich M. K. Akhtar S. E. Pratsinis

A novel process was developed for direct synthesis and in situ coating of flame-made nanostructured particles in one step. Rutile TiO2 particles made by flame spray pyrolysis (FSP) were coated in a single step with SiO2 layers in an enclosed flame reactor. This in situ particle coating was accomplished by a hollow ring delivering hexamethyldisiloxane (HMDSO) vapor (precursor to SiO2) through mu...

2017
Eunhee Kim Jin‐Young Kim Hongsoo Choi

Microprobes are used to repair neuronal injury by recording electrical signals from neuronal cells around the sur‐ face of the device. Following implantation into the brain, the immune response results in formation of scar tissue around the microprobe. However, neurons must be in close proximity to the microprobe to enable signal recording. A common reason for failure of microprobes is impaired...

Journal: :Optics letters 2005
Yang Zhao Jinsong Wang Guangzhao Mao

A two-dimensional (2D) subwavelength nanostructure for antireflection coating is fabricated upon a transparent substrate. Self-assembled 2D colloidal crystals are used as a nanoscale composite material with controlled thickness and low refractive index. The feature size of the structure is approximately 105 nm. The structure is used for antireflection coating, and the measured reflectivity of a...

2001
E. H. Jordan M. Gell Y. H. Sohn D. Goberman L. Shaw S. Jiang M. Wang T. D. Xiao Y. Wang P. Strutt

Reconstituted nanostructured powders were plasma sprayed using various processing conditions to produce nanostructured alumina–titania coatings. Properties of the nanostructured coatings were related to processing conditions through a critical plasma spray parameter (CPSP) that in turn, can be related to the amount of unmelted powder incorporated into the final coating. Those coatings that reta...

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