نتایج جستجو برای: coating morphology

تعداد نتایج: 180825  

Journal: :Nanoscale 2013
David Di Yao Matthew R Field Anthony P O'Mullane Kourosh Kalantar-Zadeh Jian Zhen Ou

Despite a favourable morphology, anodized and ordered TiO2 nanotubes are incapable of showing electrochromic properties in comparison to many other metal oxide counterparts. To tackle this issue, MoO3 of ~5 to 15 nm thickness was electrodeposited onto TiO2 nanotube arrays. A homogenous MoO3 coating was obtained and the crystal phase of the electrodeposited coating was determined to be α-MoO3. T...

ژورنال: مواد پرانرژی 2014
غضنفری, مصطفی, فخرائیان, حسین, موسوی, مجتبی, کریم زاده یونجالی, مرتضی,

In this study, Aluminium nanoparticles were synthesized by arc discharge method applying direct current between aluminium electrodes in liquid medium without the need to vacuum equipment, heat exchangers, furnaces and inert gases. In situ coating process was applied to the nanoparticles. Sample analysis indicates that the particle size was less than 30 nm. In this study, it has been seen that t...

Zirconium and its alloys have many applications in orthopedic medicine and compared to stainless steel, titanium and other metals used in the manufacture of implants has higher strength and corrosion resistance. Research shows that the method of preparation and surface modification before coating process has a significant impact on improving the metal implants among which include the sandblasti...

Journal: :Journal of materials chemistry 2012
Siyoung Choi William L Murphy

Previous studies have demonstrated the influence of calcium phosphate (CaP) mineral coating characteristics on cell attachment, proliferation, and differentiation. However, the wide range of mineral properties that can potentially influence cell behavior calls for an efficient platform to screen for the effects of specific mineral properties. To address this need, we have developed an efficient...

Create three-dimensional network of siloxane polymer in the epoxy resin is an appropriate mechanical properties .Dispersion of nanoclay in these coating was prepared by ultrasonication method. Mechanical properties of nanocomposit coatings such as abrasion, hardness and adhesion was increased by addition of nanoclay montmorillonite. Different percentages of nanoclay in coating showed that even ...

A Shafyeib H Monajatizadea M Aghakhani M. A Aghakhani

In this study, the effect of deposition regime on the wear behavior of VK8 coating applied to 1.2344 tool steel by electro spark method (ESA) was investigated. After sample preparation, the coating with high and low regime was applied. To assess the wear behavior, the pin on disk test method according to ASTM G99-04, was used. For surveying surface morphology and cross section of the coating as...

2017
Yiyong Sui Chong Sun Jianbo Sun Baolin Pu Wei Ren Weimin Zhao

The stability of an electrodeposited nanocrystalline Ni-based alloy coating in a H₂S/CO₂ environment was investigated by electrochemical measurements, weight loss method, and surface characterization. The results showed that both the cathodic and anodic processes of the Ni-based alloy coating were simultaneously suppressed, displaying a dramatic decrease of the corrosion current density. The co...

Journal: :international journal of iron & steel society of iran 2012
a. baibordi m. h. bina k. amini a. dehghan

in this research, tribological characteristics of ni-p electroless coating and double-layered ni-p/ni-b electroless coating were studied. for this purpose, ni-p electroless coating with 25 μm thickness was initially applied to the surface of steel ck45 samples; then, a double-layered ni-p/ni-b electroless coating, including inner layer of ni-p with 15 μm thickness and outer layer of ni-b with 1...

2014
Huimeng Wu Shawn Mcvey David Ferranti Chuong Huynh John Notte Lewis Stern Matthew S. Joens James A. J. Fitzpatrick Bernhard Goetze

Scanning electron microscopy (SEM) has become a crucial tool to visualize the exterior morphology and surface structures for samples in both biology and material science. Conventional SEMs are usually limited by relative low resolution and charging effects. Carbon or metal coating is required for insulator samples to minimize charging effects. However, the coating layer can sometimes obscure mi...

Aluminum coating was prepared on AZ91D magnesium alloy substrate using the electrophoretic deposition (EPD) method in absolute ethanol solvent. In order to determine the optimal concentration of AlCl3.6H2O additive, the zeta potential and size of particles in the suspension were measured in the presence of different concentrations of AlCl3.6H2O. The results showed that an appropriate coating is...

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