High corrosion resistant amorphous alloys
US5460663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Apr 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C45/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Amorphous alloys having an extremely high corrosion resistance comprise Cr and at least one element selected from Ta and Nb, as essential components, and are spontaneously passive owing to the formation of stable protective films, even in very corrosive environments such as poorly oxidizing concentrated hydrochloric acid. The amorphous alloy may further include one or more elements appropriately selected from other alloying elements of Al, Ti, Zr, Fe, Co, Ni, Cu, Mo and W. The amorphous alloys have advantageous properties, such as very high corrosion resistance, high corrosion resistance at elevated temperatures and high wear resistance, and, therefore are useful in chemical plants or other industrial and domestic applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.