Abstract:
The present invention relates to an agent in particular for the surface lubrication of an article comprising one or more molecules having the general formula (1) A-F wherein A is an anchor group comprising a moiety selected from the group consisting of silane groups, hydroxyl groups, catechol groups, phosphate groups, phosphonate groups, carboxylic acid groups, amine groups, thiol groups and any combination of two or more of the aforementioned groups and F is a functionalizing group, wherein the functionalizing group comprises a branched polymer having a backbone and at least two side groups, wherein at least one of the side groups is a C1-20 hydrocarbon group or a perhalogenated C1-20 hydrocarbon group. The invention pertains to the technical field of tribology for timepiece mechanical parts.
Abstract:
L'invention concerne un ensemble fonctionnel (100) de micromécanique comprenant au moins une première pièce (10), ayant une première couche définissant une première surface de contact destinée à venir en contact de frottement avec une deuxième surface de contact définie par une deuxième couche ladite deuxième couche appartenant, soit à ladite première pièce (10) soit à au moins une deuxième pièce de micromécanique (20) constituant avec ladite première pièce (10) ledit ensemble (100) caractérisé en ce que les première et deuxième couches comportent chacune du carbone à hauteur d'au moins 50% d'atomes de carbone et en ce qu'elles présentent au niveau des première et deuxième surfaces de contact des orientations de plans cristallins en surface différentes l'une de l'autre.
Abstract:
Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: - providing a substrate component to be coated; - providing said component with a diamond coating; wherein said diamond coating conductivity is increased in order to reduce dust attraction by the coated component when used in said micromechanical system. Corresponding microchemical components and systems are also provided.
Abstract:
Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: providing a substrate (4) component to be coated; providing said component with a diamond coating (1); wherein diamond coating is provide by CVD in a reaction chamber and during CVD deposition, during the last portion of the growth process, a controlled change of the carbon content within the reaction chamber is provided, thereby providing a change of the sp 2 /sp 3 carbon bonds (2) in the vicinity of the surface. Corresponding micromechanical components are also provided.
Abstract:
The present invention relates to an agent in particular for the surface epilamization of an article comprising one or more molecules having the general formula (1): A-F wherein: - A is an anchor group comprising a moiety selected from the group consisting of silane groups, hydroxyl groups, catechol groups, phosphate groups, phosphonate groups, carboxylic acid groups, amine groups, thiol groups and any combination of two or more of the aforementioned groups and - F is a functionalizing group, wherein the functionalizing group comprises a branched polymer having a backbone and at least two side groups, wherein at least one of the side groups is a C1-20 hydrocarbon group or a perhalogenated C1-20 hydrocarbon group. The invention pertains to the technical field of epilame for timepiece mechanical parts.
Abstract:
La présente invention concerne un procédé de fabrication d'un composant dans un substrat, caractérisé en ce qu'il comprend les étapes suivantes : a) modifier la structure d'au moins une zone de substrat afin de rendre plus sélective ladite au moins une zone; b) graver chimiquement ladite au moins une zone afin de sélectivement fabriquer ledit composant.
Abstract:
Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: providing a substrate (4) component to be coated; providing said component with a first diamond coating (2) doped with boron; providing said component with a second diamond coating (3); wherein :said second diamond coating (3) is provided by CVD in a reaction chamber; during CVD deposition, during the last portion of the growth process, a controlled increase of the carbon content within the reaction chamber is provided, thereby providing an increase of the sp2/sp3 carbon (6) bonds up to an sp2 content substantially between 1% and 45%. Corresponding micromechanical components are also provided.
Abstract:
The present invention relates to a method for producing a component in a substrate, characterised in that it comprises the following steps: a) modifying the structure of at least one area of substrate in order to make said at least one area more selective; b) chemically etching said at least one area in order to selectively produce said component.
Abstract:
The invention concerns a micromechanical functional assembly (100) comprising at least a first part (10), having a first layer defining a first contact surface intended to come into frictional contact with a second contact surface defined by a second layer, said second layer belonging either to said first part (10) or to at least a second micromechanical part (20) constituting, with said first part(10), said assembly (100), characterised in that the first and second layers each comprise carbon in an amount of at least 50% carbon atoms and in that the orientations of the surface crystal planes of their first and second contact surfaces differ from one another.
Abstract:
Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: providing a substrate component to be coated; providing said component with a diamond coating; wherein diamond coating is provide by CVD in a reaction chamber and during CVD deposition, during the last portion of the growth process, a controlled change of the carbon content within the reaction chamber is provided, thereby providing a change of the sp2/sp3 carbon bonds in the vicinity of the surface. Corresponding micromechanical components are also provided.