Manufacture of ceramic components

CN122102714APending Publication Date: 2026-05-29ROLEX SA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ROLEX SA
Filing Date
2018-04-16
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve uniform, predictable, and reproducible colors for ceramic components, particularly gray tones, and it is difficult to test the effects of added elements on mechanical properties. The manufacturing process is also complex and time-consuming.

Method used

Atomic layer deposition (ALD) and/or chemical vapor deposition (CVD) and physical vapor deposition (PVD) are used to deposit added elements or compounds, especially high-melting-point noble metals and lanthanides, onto ceramic powder to achieve uniform distribution and improve performance.

Benefits of technology

It achieves controllability of ceramic component color and improves performance, simplifies the manufacturing process, enables the production of hard-to-achieve gray tones, and achieves significant effects with the addition of small amounts of compounds.

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Abstract

The invention relates to the manufacture of a ceramic assembly, in particular to a method for manufacturing a ceramic powder for a watch or jewelry component. The method comprises a stage of manufacturing a ceramic powder comprising: a first stage of preparing a ceramic powder based on zirconium and / or aluminum oxide and / or strontium aluminate; a deposition step comprising depositing at least one added element or compound on the ceramic powder by atomic layer deposition; a second stage of integrating a binder of organic material type into the ceramic powder; after the deposition step, the manufacturing method proceeds with: a third stage of temporarily shaping the ceramic powder with binder comprising the at least one added element or compound; a fourth stage comprising a step of debinding the temporarily shaped ceramic assembly and a step of sintering the ceramic assembly to manufacture a gray watch or jewelry component with two parameters a* and b* of -3 to 3.
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