Coat-nitrocarburizing of irons and steels
US5252146A · kind A · utility
4Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Aug 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for nitrocarburizing ferrous materials, and the product thereof is described. Material to be treated is packed in a container with a triazine polymer, preferably melone, melem or melam and heated to 500.degree.-900.degree. C. for up to 120 minutes. After treatment the material can be oil quenched to produce a product having a diffusion layer and or a relatively thick hard nitrocarburized (outer) layer which is 40-200 3/4m thick and has a hardness in the range HV 400-1500.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.