Patent · US Expired

Method for plasma carburization of metal workpieces

US5851314A · kind A · utility

1Cited by

2References

8Claims

0Family size

Assignee

Ipsen International, GmbH · US

Inventors

Winfried Grafen · Duisburg, DE
Bernd Edenhofer · Kleve, DE

Key dates

Filing date	Dec 13, 1996
Grant date	Dec 22, 1998
Priority date	—
Expiry date	Dec 13, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C8/38
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for plasma carburization of metal workpieces in a furnace includes the step of introducing a mixture of propane and methane into the furnace atmosphere. The propane and methane mixture is cleaved under process conditions of plasma carburization to release pure carbon into the furnace atmosphere.

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