Apparatus for the boronizing of pieces made of metal or cermet and surface-bornished pieces
US4348980A · kind A · utility
9Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1981 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | May 8, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24967
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process and apparatus for boronizing pieces made of metal or cermet and to surface-boronized pieces. The pieces are placed in a chamber at between 850.degree. and 1,150.degree. C. and they are subjected, in the presence of boron carbide, to a gaseous stream of trifluoroboroxole (BOF).sub.3. The boron carbide is advantageously pulverulent and out of contact with the pieces to be boronized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.