Process for melting and casting ruthenium-containing or iridium-containing titanium alloys
US6409792B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Nov 6, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C14/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process for successful and homogeneous incorporation of ruthenium and iridium into titanium and titanium alloy melts, ingots, and castings via traditional melting processes (e.g., VAR and cold-hearth) has been developed. This result is achieved through the use of low-melting point Ti-Ru or Ti—Ir binary master alloys within the general composition range of ≦45 wt. % Ru and with a preferred composition of Ti-(15-40 wt. % Ru), or within the general composition range of ≦61 wt. % Ir and with a preferred composition of TI-(20-58 wt. % Ir). Primary features are its lower melting point than pure titanium, lower density than pure Ru and Ir metals, and the ability to be readily processed into granular or powder forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.