Article made of alloy consisting of two or three of ti, zr and hf, and having a martensitic crystal structure
AssigneeRolex SA
InventorArmand GIRARD-NOYER
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Abstract
Disclosed is an article made of an alloy consisting of two or three of Ti, Zr and Hf, along with unavoidable impurities in an amount of up to 0.3 at. %, the alloy having a martensitic crystal structure of fine plates as determined by Scanning Electron Microscopy, SEM, or by electron backscatter diffraction, EBSD, of a metallographic section. Further disclosed is a process for obtaining said article, an article having an adherent dense thick dark oxide layer, and a watch exterior component or watch movement component.
Claims25
An article made of an alloy consisting of two or three of Ti, Zr and Hf, along with unavoidable impurities in an amount of up to 0.3 at. %, the alloy having a martensitic crystal structure of fine plates as determined by Scanning Electron Microscopy, SEM, or by electron backscatter diffraction, EBSD, of a metallographic section.
Dependencies are inferred from the claim text.