Method for manufacturing a horological disc and horological disc obtained by its implementation

A method for manufacturing a horological mobile (10), comprising successive steps of:

• depositing (101) a first thin layer (11) with a first material including at least nickel, according to a geometric shape, the periphery of which defines the contour of the geometry of the horological mobile (10);
• depositing (102) an intermediate layer (12), with a second material including at least nickel and phosphorus, so as to cover a face of the first thin layer (11) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11);
• and
• depositing (103) a second thin layer (13) with the first material, so as to cover a face of the intermediate layer (12) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11),
• wherein the first and the second thin layer (11, 13) being poorer in phosphorus than the intermediate layer (12), or not containing any phosphorus, and
• wherein the first material comprises a proportion by weight of phosphorus between 6% and 9%.

A method for manufacturing a horological mobile (10), comprising successive steps of:

• depositing (101) a first thin layer (11) with a first material including at least nickel, according to a geometric shape, the periphery of which defines the contour of the geometry of the horological mobile (10);
• depositing (102) an intermediate layer (12), with a second material including at least nickel and phosphorus, so as to cover a face of the first thin layer (11) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11);
• and
• depositing (103) a second thin layer (13) with the first material, so as to cover a face of the intermediate layer (12) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11),
• wherein the first and the second thin layer (11, 13) being poorer in phosphorus than the intermediate layer (12), or not containing any phosphorus, and
• wherein the first material comprises a proportion by weight of phosphorus between 1% and 6%.

A method for manufacturing a horological mobile (10), comprising successive steps of:

• depositing (101) a first thin layer (11) with a first material including at least nickel, according to a geometric shape, the periphery of which defines the contour of the geometry of the horological mobile (10);
• depositing (102) an intermediate layer (12), with a second material including at least nickel and phosphorus, so as to cover a face of the first thin layer (11) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11);
• and
• depositing (103) a second thin layer (13) with the first material, so as to cover a face of the intermediate layer (12) and so as to have a geometric shape, the periphery of which corresponds to that of the geometric shape of the first thin layer (11),
• wherein the first and the second thin layer (11, 13) being poorer in phosphorus than the intermediate layer (12), or not containing any phosphorus, wherein the first thin layer (11), the intermediate layer (12) and the second thin layer (13) are deposited so that the horological mobile (10) formed includes, in the orientation and in the direction of growth of deposition of said layers, a gradient of concentration of phosphorus defined by a progressive increase through the first thin layer (11), a stable state through the intermediate layer (12) and a decrease through the second thin layer (13).