Patent · US Active

Multicorrosion protection system for decorative parts with chrome finish

US10865495B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

MacDermid Enthone Inc. · US

Inventors

Andreas Konigshofen · Leverkusen, DE
Ronny Kiefer · Fairbridge Court, DE

Key dates

Filing date	Sep 23, 2016
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Apr 28, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24917
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a corrosion protection layer system for metal surfaces, said layer system comprising as the two top most layers: a) a discontinuous nickel-phosphorus layer and b) a chromium layer plated from a trivalent chromium electrolyte solution, and method of producing such a corrosion protection layer system. The corrosion protection layer system provides corrosion resistance of the nickel-phosphorus layer against sodium chloride with the protection of the chromium layer produced from a trivalent process again magnesium salts, without the need for any post-treatment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.