09-03-2017 дата публикации
Номер: US20170068218A1
The invention relates to a micromechanical timepiece part comprising a silicon-based substrate () having at least one surface, at least one part of said surface having pores () which open out at the external surface of the micromechanical timepiece part and comprise a tribological agent (). 1. A micromechanical timepiece part comprising a silicon-based substrate , having at least one surface , wherein at least one part of said surface has pores which open out at the external surface of the micromechanical timepiece part and comprise a tribological agent.2. The micromechanical timepiece part according to claim 1 , wherein the pores have an aspect factor (depth:diameter ratio) between 5 and 100.3. The micromechanical timepiece part according to claim 1 , wherein the pores have a depth greater than 100 μm.4. The micromechanical timepiece part according to claim 3 , wherein the pores have a depth greater than 200 μm.5. The micromechanical timepiece part according to claim 4 , wherein the pores have a depth greater than 300 μm.6. The micromechanical timepiece part according to claim 1 , wherein it comprises claim 1 , between the pores claim 1 , silicon-based fibres.7. The micromechanical timepiece part according to claim 6 , wherein the silicon-based fibres have an aspect factor (depth : diameter ratio) between 5 and 100.8. The micromechanical timepiece part according to claim 6 , wherein the silicon-based fibres comprise walls which are covered with at least one wetting agent for the tribological agent claim 6 , the silicon-based fibres being impregnated with the tribological agent.9. The micromechanical timepiece part according to claim 6 , wherein silicon-based fibres comprise walls which are covered with at least one polymer brush claim 6 , the silicon-based fibres and the polymer brush being impregnated with the tribological agent.10. The micromechanical timepiece part according to claim 1 , wherein the tribological agent is a perfluorocarbonated polymer.11. The ...
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