Surface Electric Conductance

Maximum gap between the eddy-current converter and the expected surface- 10mm Inspected surface electrical conductivity- 0.5-r60MS/m. 

Surfaces. Essentially any electrically conductive surface can be electroplated, although special techniques may be required to make the surface electrically conductive. Many techniques ate used to metalline nonconductive surfaces. These are weU-covered ia the Hterature (3) and can range from coating with metallic-loaded paints or reduced-silver spray, to autocatalytic processes on tin—palladium activated surfaces or vapor-deposited metals. Preparation steps must be optimized and closely controlled for each substrate being electroplated. 

Aluminium is widely applied for decorative and protective requirements, while cadmium , zinc and titanium have been applied to ferrous materials chiefly for their protective value. The method finds particular application in the plating of high-tensile steels used in aviation and rocketry, car fittings and lamp reflectors, and gramophone record master discs, as well as in the preparation of specimens for electron microscopy and in rendering insulated surfaces electrically conducting, e.g. metallising of capacitors and resistors. 

Much of the recent wor)c pertaining to metal ion modified polyimides has been aimed at increasing the surface electrical conductivity of condensation polyimides (6,7,8). This has been accomplished to a significant extent (surface resistivity reduced up to 11 orders of magnitude (8,9)) but in most systems the bul)c... 

For the AIA-SEM analyses, the raw and clean coal samples were prepared by mixing 2 g of the sample with an epoxy resin and casting into molds 1 in. in diameter. The hardened pellets were polished to reveal a cross section and finished by polishing with 0.3-ym alumina powder. Then the pellets were coated with approximately 500 A of carbon to render sample surfaces electrically conductive for examination in the SEM unit. 

However, in experimental studies it has been observed that gum Arabica specimen has a surface electrical conductivity which is very sensitive to local humidity. Moreover, it has been observed that the bulk electrical conductivity... 

In conclusion, partially dehydroxylated oxide surfaces exhibit a large inventory of surface OH groups and water molecules together with Lewis acidic and Lewis basic sites with coordinative unsaturation (structures II and III of Scheme 1). The hydroxyl population is the souree of protons that cause enhanced surface electrical conductivity and catalytic activity. It is significant that the increase in the conductivity value is paralleled by increases in either the amount of weakly bound protons or their mobility [48]. Almost all metal oxides are active in catalytic isomerization of alkenes, which is one of the least demanding reactions in terms of the requirements for the acid strength of active sites [34]. Studies on several oxide systems show that the activity is lost after extensive dehydration and is partially restored by... 

May increase the surface electrical conductivity. This is especially important of LiMP04 olivine compounds. Indeed, for LiMP04 cathode materials for which electronic conductivity is very low, the use of thin carbon coating is essential for their operation [92,93]. 

Thus, as a result of the lead researches the new method of obtaining of graphite feeling polyhydroxiethers with high parameters of adhesion to various surfaces, electrical conductivity, physic-mechanical and antifriction properties is offered. 

Many applications currently exist for carbon composite and polymer materials. Ion implantation is a technique that can result in a combination of the best properties of polymers and of carbon composites. Polymers, used for stmctural and packaging applications, have disadvantages, which usually include softness, low thermal stability, high chemical permeability, and low electrical conductivity. The lack of electrical conduction can lead to problems such as triboelectrification and electrostatic charging. The electrical conduction properties of polymers can be controlled by ion implantation. Ion implantation can make any polymer surface electrically conductive, chemically impermeable, and mechanically hard. Some appli-... 

The particle size, size distribution and composite structure of the films were characterized by TEM (H-7100). Surface electric conductivity of the CuS dispersed films was measured using a MCP-T350 four probes surface resistance meter. UV-... 

Surface conductance Surface electric conductance Definition... 

In order to dissipate the electrical charge on the surface of the plastic, we must render the surface electrically conducting in some way. This enables the electrons to be dissipated. There is no problem if a plastics material is already conducting, because of the additives it contains, or because the base polymer is intrinsically conducting - the latter situation is uncommon. 

Os - surface electrical conductivity ofNBR vulcanizates Gy - through electrical resistivity ofNBR vulcanizates... 

Revil, A., Glover, P.J.W., 1998. Nature of surface electreical conductivity in natural sands, sandstones, and clay. Geophys. Res. Lett. 25, 691 94. 

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