One of the main ways to protect steel against corrosion is by galvanizing process. This process has been continuously developed and its first optimization was performed addition Aluminum in coating. As a result, Zn-5wt.%Al 55wt.%Al-Zn coatings were developed. Recently, search for increased resistance led development zinc coating with magnesium aluminum. In this work, comparative study coated Zn...

Plasma electrolytic oxidation (PEO) is the new, environmentally and cost-effective method for coating the metals. This method vastly has been studied for coating Aluminum, Titanium and Magnesium and their alloys and recently for steel. In present study, Ck45 steel samples were coated by PEO method in order to improve corrosion resistance. During this process specimens were immerged in carbonate...

T h e prepara t ion and propert ies of combined a luminium oxide coatings have been investigated. T h e coating has been prepared in two steps. First , a luminium subs t ra te was anodically oxidized. In t he next s tep the anodized film has been coated by the sol-gel method . T h e condit ions of forming coatings wi thout shrinkage were obta ined empirically. It was found out t h a t the film ...

In this paper, an alumina-zirconia (Al₂O₃-ZrO₂) nanolaminate dielectric was fabricated by spin-coating and the performance was investigated. It was found that the properties of the dielectric can be adjusted by changing the content of Al₂O₃/ZrO₂ in nanolaminates: when the content of Al₂O₃ was higher than 50%, the properties of nanolaminates, such as the optical energy gap, dielectric strength (...

Abstract In this publication, cold gas spraying (CGS) is investigated as an enabler for aluminum-steel joints. Using a powder-based coating process to adhere steel layer aluminum substrate allows component be welded the deposited by resistance spot welding. This method permits metallurgical connection between similar materials separated, while mechanical bonding ensures at dissimilar aluminum-t...

Metals that work at high temperatures (for instance, superalloys in gas-turbines) depend on thermally grown oxide (TGO, commonly alumina) to withstand corrosion attack. Nickel Aluminide (NiAl) as one superior alumina TGO former plays an important role in protective coatings for turbine blades in gas-turbine engines used for aircraft propulsion and power generation. Lowering TGO growth rate is e...

A high fidelity interferometric transducer is designed based on platinum-coated nanoporous alumina films. The ultrathin metal coating significantly improves fidelity of the interferometric fringe patterns in aqueous solution and increases the signal-to-noise ratio. The performance of this transducer is tested with respect to refractive index unit (RIU) sensitivity measured as a change in effect...

The basic element of the design a power module is metallized ceramic substrate. In this work, formation metallization coatings by method thermal transfer pastes (Mo-Mn-Si + binder) for alumina and aluminum nitride ceramics was carried out. fixing coating on substrate performed firing at temperature 1320 °C. subsequent deposition copper layer out cold gas-dynamic spraying (CGDS) followed anneali...

The first experimental observation of magnetic resonances in electron clouds is reported. The resonance was observed as a modulation in cloud intensity for uncoated as well as TiN-coated aluminum surfaces in the positron storage ring of the PEP-II collider at SLAC. Electron clouds frequently arise in accelerators of positively charged particles, and severely impact the machines’ performance. Th...