Showing papers on "Active surface published in 1982"

Corrosion protection method

Abstract: Methods of preventing corrosion in which current flows between the to-be-protected substrate and a distributed electrode whose electrochemically active surface is provided by an element which is composed of a conductive polymer and which is at least 500 microns thick. In one embodiment, the electrode is a flexible strip comprising a highly conductive core, e.g. of copper, and a conductive polymer element surrounding the core. In another embodiment, the electrode is a conductive polymer layer which conforms to the surface of the substrate but is separated from it by a layer of insulation.

Method for providing alpha particle protection for an integrated circuit die

Abstract: A controlled quantity of a liquid polyimide precursor compound is deposited on the active surface of an integrated circuit die which has been prepared for packaging, and thereafter cured using a two step curing process to develop a polyimide coating of sufficient thickness to provide alpha particle protection for the die once packaged.

Stabilising non-aq. electrochemical cells - by inhibiting active cathode surface by using a metal salt

Abstract: Method of stabilising electrochemical cells free from water including an active metal anode, a cathode, the surface of which is provided with functional gps. and a non-aq. electrolyte solvent in which is dissolved an electrolytic salt, is described in which practically all the active surface of the cathode is partially inhibited before the initial discharge of the cell. The design permits use of electrolyte solvents which decompose releasing gas without requiring a rigorous heat treatment of the cathodes.

Sensor system for ice or scale deposition on cooling surfaces - has LED and photodiode in refrigerator, or freezer, active surface, with direct light path

Abstract: The sensor system detects ice or scale deposition on the cooling surface and refrigerators or freezers. On the respective cooling surface (K) is mounted a light emitting diode (LQ) as a light source and a photodiode (LE) as a light receiver. Between these two components is not a direct visual connection. Preferably the two components lie in the same plane, flush on the cooling surface, with which they form a smooth surface. The two components may be mounted horizontally adjacent in a vertical cooling surface. The light emitting diode may be operated by a push-button switch, in order to maintain the generated heat as low as possible. The sensing function is typically interrupted on opening the door of the refrigerator cabinet. The distance between two diodes is such that it cannot be bridged by a water droplet. Parts of the light path (LW) are in the form of optical fibres, both for thermal decoupling or mechanical matching and sealing.

Application of an exponential kinetic equation with polymolecular adsorption for determining the adsorbent surface

Abstract: An exponential kinetic equation has been used to study polymolecular adsorption. An opportunity to determine the adsorbent's active surface by a kinetic method is presented.

Production of high polymer semipermeable membrane

Abstract: PURPOSE:To prevent the formation of an inert compact layer on the membrane surface in casting a soln. of a hydrophobic high polymer on the surface of a horizontal base plate and forming a semipermeable membrane, by using the surface of the horizontal base plate of specific roughness. CONSTITUTION:The homogeneous roughness of the surface of a horizontal base plate is 5,000-1 Becke sec. smoothness specified in JIS P 8119, more preferably, 1,000-3 Becke sec. It is necessary that the material of the surface of the horizontal base plate is fluid impermeable one such as glass plates, slate plates, metallic or plastic sheets. The soln. dissolving a hydrophobic high polymer having film forming ability is case on this horizontal base plate, and these are immersed in a gelling bath consisting essentially of water, whereby a high polymer membrane is formed. Thereby, the formation of an inert compact layer on the membrane surface on the side not in contact with air is prevented and the semipermeable membrane having an active surface layer is obtained.