Process for surface treating iron-based alloy and article
US8741444B2 · kind B2 · utility
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Key dates
| Filing date | Aug 25, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Jan 22, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12549
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for surface treating iron-based alloy includes providing a substrate made of iron-based alloy. A chromium layer is then formed on the substrate by vacuum sputtering. A silicon oxide layer, an alumina layer, and a boron nitride layer are formed in that order by vacuum evaporation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.