Beispiele zur Bedeutung der Spurenanalytik für die Werkstoffwissenschaften

Summary

Chemical analysis and materials research are linked together in manifold ways. Low contents of undesirable impurities and of alloying elements have a deciding influence, e.g., on mechanical properties, hot ductility and corrosion behavior of steel. Therefore trace analysis is of great importance for many questions in materials research. By way of examples the strong relationship between metallurgy, materials research, and chemical analysis will be explained.

In case of titanium there is a need for a reliable method for the Ti determination below 50 μg/g. On the other hand, Ti has to be determined in the range of 80 to 800 μg/g with a standard deviation of 10 μg/g in order to allow the production of fine-grained steels. Another example of modern steel analysis is the determination of low contents of calcium. Results obtained by ICP-spectrometry in the range of 5 to 40 μg/g are reported. Finally, the state of the art of trace analysis of steels is mentioned.