Conclusion

The main disadvantages of Raman spectrometers have been overcome. Acquisition times, which yesterday were still around ten hours for the analysis of an area with a few dozen measuring points on each side, have been drastically reduced, and advances in microcomputers have made it possible to develop efficient tools for extracting the relevant parameters. The production of calculated images, constructed from each measurement point, no longer has anything to do with the "direct" optical imaging attempts of the 1980s. Calibration data become available for many phases, lightening the workload involved in moving from a qualitative image to a quantitative measurement. It is likely that more and more systems will be able to be studied in situ, either in static mode or in dynamic sequences. The examples given are not exclusive.

Raman mapping is also widely used in metal...