Patent · US Expired

Process for producing an extremely hard mixed carbide layer on ferrous materials to increase their resistance to wear

US4099993A · kind A · utility

4Cited by

3References

7Claims

0Family size

Inventors

Hermann Muller · Bonn, DE
Otto Schaaber · Bremen, DE

Key dates

Filing date	Jan 22, 1976
Grant date	Jul 11, 1978
Priority date	—
Expiry date	Jan 22, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/12819
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A process for producing an extremely hard, non-brittle, strongly-adhering mixed carbide layer consisting of vanadium and chromium on carboniferous ferrous materials by means of annealing to improve their specific properties such as wear resistance and corrosion resistance.

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