DIN 54387-2:2016-12
Действует
Testing of ceramic raw and basic materials - Chemical analysis of boron carbide, boron nitride, metal borides and elemental boron - Part 2: Determination of total boron, soluble boron compounds, HNO<(Index)3>-soluble boron in B<(Index)4>C, H<(Index)2>O<(Index)2> soluble and insoluble fractions in amorphous boron and HF/HNO<(Index)3> insoluble fractions in titanium boride
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