Alkali metal carboxylate salt brines, such as cesium formate brine, are used in oil and gas drilling procedures. Contamination with chloride ions can be controlled by treatment with a silver salt solution, and removing silver chloride formed. High density brines can be obtained, suitable for re-use.

Novel forms of molybdenum metal, and apparatus and methods for production thereof. Novel forms of molybdenum metal are preferably characterized by a surface area of substantially 2.5 m.sup.2/g. Novel forms of molybdenum metal are also preferably characterized by a relatively uniform size.

A metal gasket capable of preventing the occurrence of cracks in a stopper while employing a wave-shaped stopper, improving the contact pressure balance around the bead to enhance the engine performance, and improving the durability of the stopper. The metal gasket is constituted by a gasket component sheet having an opening formed to face a combustion chamber, and the gasket component sheet is provided with a combustion chamber bead surrounding the opening. An inner circumference side stopper l...

A metal gasket with a hole to be sealed includes first and second metal base plates laminated together. The first metal base plate has a first main bead around the hole, and a first outer sub-bead section smaller than the first main bead and provided outside the first main bead. The second metal base plate has a second main bead around the hole, and a second outer sub-bead section smaller than the second main bead and provided outside the second main bead. The second outer sub-bead section abuts...

A packaging comprising a first and second outer part of metallic material, an inner part of non-metallic material made in one piece and comprising a first and second opposed side between which an element can be stored and a hinging part forming at least one hinge connecting said sides and allowing the sides to be rotated relative to each other within an angle so as to open the packaging and adapting the packaging and adapting the packaging for packing in an automated packing machine. At least a ...

A metal cord comprising at least two metal strands. At least one strand is welded, with the welded strand having an elongation at rupture of more than 30% of the elongation at rupture of an identical strand without a weld.

A memory (33) is provided for storing in advance data of signals supplied from a detector unit (26) when a plurality of metallic foreign matter samples differing in magnitude passes an alternating field, and data representing the magnitude of each foreign matter sample. A setting device (32) causes an indicator 36 to display the magnitude of metal detectable by a determination device (31) on the basis of those data on the foreign matter samples. Further, a contained metal displaying device (34),...

A metal terminal includes a base plate portion for placing an electric wire thereon and a pair of crimping piece portions which extend upwardly respectively from opposite side edges of the base plate portion for press-contacting the electric wire. Each of the crimping piece portions has a distal end portion and a body portion such that a thickness of the each of crimping piece portions is tapered toward a distal end surface of the distal end portion from the body portion. A thickness of a distal...

A metal-insulator-metal (MIM) capacitor is made according to a copper dual-damascene process. A first copper or copper alloy metal layer if formed on a substrate. A portion of the first metal layer is utilized as the lower plate of the MIM capacitor. An etch stop dielectric layer is used during etching of subsequent layers. A portion of an etch stop layer is not removed and is utilized as the insulator for the MIM capacitor. A second copper or copper alloy metal layer is later formed on the subs...

A method of forming a surface finish of trivalent chromium on metal or plastics substrates by electrodeposition from an aqueous plating solution of trivalent chromium ions in which the trivalent chromium is deposited on a layer of silver or silver alloy whereby the color and/or corrosion resistance of the trivalent chromium is comparable to surface finishes of hexavalent chromium. The invention avoids the health and safety risks associated with the electrodeposition of hexavalent chromium surfac...