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Nano-structure and properties of silver-implanted PET

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SURF Polyethylene terephthalate (PET) has been modified by Ag ion implantation with a dose range from 1 x 10*16 to 2 x 10*17 ions/cm*2 using a metal vapor vacuum arc source. The surface morphology was observed by atomic force microscopy. The Ag atom precipitation was determined. The change of the nano-structure of Ag-implanted PET was observed using a transmission electron microscope. It is believed that this change causes an improvement of the conductive properties and wear resistance. The electrical properties of PET were also changed after Ag ion implantation. The resistivity of implanted PET decreased with an increase in ion dose. When an Ag ion dose of 2 c 10*17/cm*2 was selected, the resistivity of PET could be less than 0.02 Ohm.m. The surface hardness and modulus increased compared to the untreated PET. The hardness and modulus of Ag-implanted PET with a dose of 2 x 10*17/cm*2 is 2.2 and 7.3 times greater than that of pristine PET, respectively. The area of a cutting groove for Ag-implanted PET is narrow and shallow compared to the unimplanted PET. Thus wear resistance improved greatly. The Ag ion beam modification mechanism of PET is discussed.

Nano-Structure Control by ECR Sputtering

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Nano-Structured Coating Systems.

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Nano-sized ceramic particles incorporated in ductile and/or corrosion-resistant binder matrix.

Nano-Structured Coating Systems.

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Nano-structured coating systems, components and associated methods of manufacture including a substantially ductile and/or corrosion-resistant binder matrix and a plurality of substantially hard nano-sized ceramic particles or gains disposed within the substantially ductile and/or corrosion resistant binder matrix, wherein the mean free spacing between the plurality of nano-sized ceramic particles or gains is on a nano-scale. Optionally, the coating systems, components and associated methods of manufacture also including a plurality of substantially hard micron-sized ceramic particles or grains disposed within the substantially ductile and/or corrosion resistant binder matrix.

Nano-structured CrN/AlN multilayer coatings synthesized by pulsed closed field unbalanced magnetron sputtering.

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Nano-structured surfaces - state of art for decorative metallised surfaces

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Specially textured surfaces offer unique properties. Nickel + chromium can be textured to give high or low surface tension (values given) (wetting, non-wetting), pearlescent, non-fingermarking. Nanocoating as carried out at Messrs Kludi is described with methods for coating & drying set out, sketch shows production line. 1 ref

Nano-talc pigment based coatings

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Overview of title paints with data on mercury inclusion porosimetry, TAPPI (Ralston Purina) test, dynamic penetration test. SEMs show surface morphology. 3 refs

Nano-technology coatings

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Report on EU "Multiprotect" research project, for heavy metal-free corrosion protection coatings

Nano-Technology Promoting Policy of the Ministry of Economy, Trade and Industry.

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Nano-TiO2 coating prepared on 304 stainless steel by liquid phase deposition.

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Uniform and compact nano-TiO2 coatings were prepared on 304 stainless steel substrates by liquid phase deposition. The TiO2 coatings were characterized as anatase after heat treatment. The color and thickness of nano-TiO2 coating vary with the ratio of [(NH4)2TiF6] to [H3BO3] and deposition time. The nano-TiO2 coating prepared by liquid phase deposition has poorer performances of corrosion protection and photoelectrochemistry as compared with that prepared by sol-gel method.

Nano-tools in analysis and surface manipulations

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Note on micro-grippers and injectors with brief overview of their actual and possible roles in R&D.

Nano-tools in analysis and surface manipulations

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Note on micro-grippers and injectors with brief overview of their actual and possible roles in R&D.

Nano-wear, nano-hardness and corrosion-resistance of electroplated nickel surfaces after co-implantation of Cr+ and N2+ ions

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SURF In this work, a successful sequential co-implantation treatment of Cr+ and N2+ ions into electrodeposited nickel plates is presented. The goal of this treatment is the simultaneous enhancement of the wear resistance, mechanical stability and corrosion-protection properties of the Ni surfaces. The ion-implanted surfaces have been characterized by glow-discharge optical-emission spectroscopy, X-ray diffraction, nano-hardness, roughness, nano-wear and potentio-dynamic corrosion tests. It has been observed that the implantation of Cr+ or N2+ alone is not sufficient to achieve simultaneously the enhancement of both the wear-resistance and the corrosion-protection properties. Conversely, the sequential implantation of Cr+ and N2+ at 140 keV and fluencies of 3 1017 and 1.5 1017 ions/cm2 respectively, permits the formation of a functional surface capable of reducing both the corrosion rate and the wear rates, with respect to those exhibited by the un-implanted Ni surfaces. This treatment can be used to protect the surfaces of micro-embossing/stamping dies based on electroformed Nickel, as an alternative to other coating strategies. Furthermore, the ion implantation assures the non-modification of the net-shape and surface finish of these types of dies, which is of crucial importance when they are used for high-precision micro-texturing/imprinting applications.

Nanobacteria & corrosion

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Suggests that the role of bacterial action might be involved in corrosion more often than is often suspected, and quotes case studies from a wide range of scientific disciplines where the binding of bacteria to metals is significant. 17 refs

Nanobiotechnology.

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