Metal alloy identifier
US4692875A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1984 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Jun 22, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/283
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To identify the composition of a metal alloy, sparks generated from the alloy are optically observed and spectrographically analyzed. The spectrographic data, in the form of a full-spectrum plot of intensity versus wavelength, provide the "signature" of the metal alloy. This signature can be compared with similar plots for alloys of known composition to establish the unknown composition by a positive match with a known alloy. An alternative method is to form intensity ratios for pairs of predetermined wavelengths within the observed spectrum and to then compare the values of such ratios with similar values for known alloy compositions, thereby to positively identify the unknown alloy composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.