Component especially for horology with surface topology and method for manufacturing the same

A timepiece comprising the system including two components intended to be in friction contact with each other via friction surfaces in a given direction of friction, wherein the friction occurs in a so-called ‘functional area’, the system comprising at least one of the two components comprising, in the functional area, a surface having a texture formed of a series of troughs of rounded shape separated by peaks or a series of bumps of rounded shape separated by troughs, said troughs extending parallel to said given direction and allowing for the evacuation of debris produced by friction and serving as a reservoir for a lubricant.

A method for manufacturing a mould or a component respectively made from silicon, the method including the following steps:

• (a) providing a blank made from silicon,
• (b) machining sidewalls on said blank by the deep reactive ion etching process to form the mould or the component, said machined sidewalls having a scalloped texture inherent to the deep reactive ion etching process, said texture defining on the machined sidewalls a set of troughs of depth P, wherein, at the end of the manufacturing method, said troughs are maintained on the machined sidewalls of the mould or of the component to form on said machined sidewalls channels able to collect debris or to receive a lubricant.