| 摘要 |
PROBLEM TO BE SOLVED: To provide lubrication-free escapement mechanisms having a low and stable coefficient of friction and low wear and exhibiting excellent endurance over time.SOLUTION: A timepiece escapement mechanism 100 with improved tribology includes a first component 2 and a second component 3 respectively including a first friction surface 20 and a second friction surface 30 arranged to cooperate in contact with each other. The second friction surface 30 includes at least one silicon-based material selected from a group including silicon (Si), silicon dioxide (SiO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), porous silicon, or a mixture of silicon and silicon oxide. The first friction surface 20 is formed by the surface of a solid element which is made of solid silicon nitride in the stoichiometric formulation SiN. |
