Abstract:
La présente invention a pour objet des dispersions d'halogénures de terres rares, en milieu aqueux et leur procédé de préparation. Les dispersions d'halogénures de terres rares en milieu aqueux de l'invention, sont caractérisées par le fait qu'elles comprennent au moins un halogénure de terre rare et au moins un agent dispersant, éventuellement un agent anti-gel et/ou un agent anti-moussant.
Abstract:
Die Erfindung betrifft ein Schmiermittel und ein Verfahren zur Kaltumformung metallischer Werkstoffe mit einem derartigen Schmiermittel. Das Schmiermittel enthält Fett- oder Naphthensäuren und/oder deren Salze als Schmierstoff und ggf. anorganische und/oder organische Verbindungen als Zusätze, die als Dispergatoren, Haftvermittler, Filmbildner, Hochdruckzusätze beziehungsweise unter dynamischen Bedingungen als Viskositätsstabilisatoren dienen. Erfindungsgemäß sind zusätzlich Salze von Oligo-alpha-methylstyrol-dicarbonsäuren in einer Konzentration von 0,01 bis 30 Masse-% als Hochdruckzusatz sowie 0 bis 90 Masse-% Polyphosphat enthalten. Nach dem erfindungsgemäßen Verfahren zur Kaltumformung wird ein Schmiermittel angewandt, bei dem in einer Flüssigkeit bis zu 50 Masse-% Schmierstoff sowie als Zusätze 0,005 bis 15 Masse-% Salze der Oligo-alpha-methylstyrol-dicarbonsäuren und 0 bis 45 Masse-% Polyphosphat enthalten sind, wobei der Umformprozeß entweder unmittelbar innerhalb eines mit diesem Schmiermittel hergerichteten Bades oder unter Ausnutzung einer auf das Umformgut aufgebrachten, vorzugsweise getrockneten Schmiermittelschicht durchgeführt wird.
Abstract:
An electro-rheological fluid comprising a hydrophilic solid and a hydrophobic liquid component wherein the hydrophobic liquid component comprises a fluorosilicone whose average molecular weight is in the range 20̸0̸ - 70̸0̸.
Abstract:
A grease composition suitable as a lubricating sealant which is resistant to aprotic solvents such as chloroform and carbon disulfide comprises glycerine, fumed silica, polyethylene glycol and a minor amount of water. A preferred grease composition is one in which the amount of glycerine ranges is from 50 to 95 weight % of the total composition, the amount of fumed silica is from 1 to 25% by weight of the total composition, the amount of polyethylene glycol ranges is from 0.5% to 50% by weight of total composition and the amount of water is from 0.01% to 1.0% by weight of total composition, the total composition amounting to 100%.
Abstract:
A grease composition suitable as a lubricating sealant which is resistant to aprotic solvents such as chloroform and carbon disulfide comprises glycerine, fumed silica, polyethylene glycol and a minor amount of water. A preferred grease composition is one in which the amount of glycerine ranges is from 50 to 95 weight % of the total composition, the amount of fumed silica is from 1 to 25% by weight of the total composition, the amount of polyethylene glycol ranges is from 0.5% to 50% by weight of total composition and the amount of water is from 0.01% to 1.0% by weight of total composition, the total composition amounting to 100%.
Abstract:
A method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine comprising lubricating the crankcase of the engine with a composition comprising a combination of a molybdenum-containing additive and a boron-containing additive. Preferably, the composition comprises a calcium detergent providing a calcium content of at least 0.08 wt.%, based on the weight of the lubricating oil composition.
Abstract:
A lubricant coating disposed between a substrate and a counter surface comprises a reaction layer immediately adjacent the substrate. A bonding layer is immediately adjacent the reaction layer, with the bonding layer comprising a first composition. A low friction, lubricious layer is immediately adjacent the bonding layer, with the lubricious layer comprising a second composition that is different from the first composition.
Abstract:
A solid film lubricant system for protecting metal wear interfaces subject to high temperatures and wet lubrications, comprising an oil-attracting solid lubricant mixture with at least two elements selected from the group of graphite, MoS2 and BN; a support (i.e., hard lands or hard sublayer) for the mixture to loads of at least 10 psi at temperatures of 600 DEG -800 DEG F. while being thermally stable; a thermally stable thermoset polymer matrix adhering the mixture to the support or the wear surface, the polymer having inherent hydrocarbon chemical attraction to form a tenacious oil film of the lubricating oil on the wearing surface. A method of making anti-friction coated surfaces comprising providing a light metal based cylinder surface (i.e., metal base or alloys of aluminum, titanium, or magnesium); exposing nonoxidized metal of the surface; applying a high elastic modulus load-supporting metal layer onto at least portions of the light metal cylinder surface; and simultaneously distributing a solvent-based solid film lubricant mixture and thermoset polymer onto at least portions of the layer at about room temperature to form a coating of desired thickness. An engine block with one or more anti-friction coated cylinder bore surfaces, comprising a hard, load-supporting face on the bore surface; and a coating on the face comprised of an oil-attracting solid lubricant mixture and a thermoset polymer that supports loads of at least 10 psi at temperatures of 600 DEG -800 DEG F. and is stable at such temperatures.
Abstract:
PCT No. PCT/SE96/01701 Sec. 371 Date Oct. 28, 1998 Sec. 102(e) Date Oct. 28, 1998 PCT Filed Dec. 19, 1996 PCT Pub. No. WO97/25393 PCT Pub. Date Jul. 17, 1997The present invention relates to a method for mechanical working of metal and other solid materials with a cooling and lubricating composition containing a major portion of carbon dioxide and a minor portion of a polar lubricant containing at least one polar organic compound with at least one oxygen atom. The polar groups may be selected from the group consisting of the ether, hydroxyl, carboxyl, ester and amido group or mixtures thereof.