Method for manufacturing a composite component of a timepiece or of a jewelry part, and composite component obtainable by such method
US-2016331090-A1 · Nov 17, 2016 · US
US2022133003A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022133003-A1 |
| Application number | US-202217575758-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 14, 2022 |
| Priority date | May 13, 2015 |
| Publication date | May 5, 2022 |
| Grant date | — |
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The invention relates to a method for manufacturing a composite component of a timepiece or of a jewelry part, the composite component comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, said method comprising the steps of:providing a porous ceramic preform of the component,providing a metallic material,heating the metallic material to a temperature higher than the melting point of the metallic material,filling the pores of the ceramic preform with the molten metallic material,cooling the metallic material and the ceramic preform to obtain a solidified metallic material in the pores of the ceramic preform, andapplying finishing treatments to obtain the composite component,wherein said porous ceramic preform consists essentially of a material selected from the group consisting of Si3N4, SiO2 and mixtures thereof, and said metallic material is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.The invention relates also to a composite component of a timepiece or of a jewelry part comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, wherein said porous ceramic part consists essentially of a material selected from the group consisting of Si3N4, SO2 and mixtures thereof, and said metallic material which is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.
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What is claimed is: 1 . A method for manufacturing a composite component of a timepiece or of a jewelry part, the composite component comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, said method comprising: providing a porous ceramic preform of the component, providing a metallic material, heating the metallic material to a temperature higher than the melting point of the metallic material, filling the pores of the ceramic preform with the molten metallic material, cooling the metallic material and the ceramic preform to obtain a solidified metallic material in the pores of the ceramic preform, and applying finishing treatments to obtain the composite component, wherein said porous ceramic preform consists essentially of a material selected from the group consisting of Si 3 N 4 , SiO 2 and mixtures thereof, and said metallic material is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals. 2 . The method according to claim 1 , wherein the metallic material is pure metal. 3 . The method according to claim 1 , wherein the metallic material is an alloy of said metal and silicon. 4 . The method according to claim 1 , wherein the ceramic preform of the composite component is a net-shape preform. 5 . The method according to claim 1 , wherein the porosity level of the porous ceramic preform is calculated according to a desired carat level to be achieved by the composite element. 6 . The method according to claim 1 , wherein the filling of the pores of the ceramic preform with the molten metallic material is an infiltration step by an infiltration process. 7 . The method according to claim 6 , wherein no additional pressure is applied on the molten metallic material during the infiltration. 8 . The method according to claim 1 , further comprising coating the intern walls of the pores of the ceramic preform with a wetting agent before the step of filling the pores of the ceramic preform with the molten metallic material. 9 . The method according to claim 8 , wherein the wetting agent is pure gold or a gold alloy.
by mechanical means · CPC title
Direct deposition of molten metal · CPC title
starting from a melt · CPC title
only nitrides · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
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