Micromechanical component for containing a lubricant substance

A micromechanical component intended for timepiece mechanisms, at least a part of the component being made from a crystalline mineral material based on carbon or alumina comprising at least one contact surface intended to come into sliding and/or pivoting contact;

• the contact surface comprising at least one microstructured zone having a texture;
• the texture being formed of microcavities that make the microstructured zone more oleophobic than a non-microstructured zone of the contact surface, and/or formed of micropillars that make the microstructured zone more oleophilic than a non-microstructured contact surface;
• wherein the microstructured zone is configured to confine a lubricating substance on a lubricated portion of the contact surface;
• the texture being formed of microcavities and the microstructured zone extending at a periphery of the lubricated portion;
• or
• the microstructured zone comprising a first microstructured zone having a texture formed of microcavities and extending at the periphery of the lubricated portion, and a second microstructured zone having a texture formed of micropillars and extending in the lubricated portion;
• wherein the lateral dimension of the microcavities and of the micropillars is between 5 μm and 150 μm.