DIN 54387-2:2016-12

This Part 2 of the series of standards specifies the determination of total boron and various -acid or water-soluble forms of boron. A titrimetric and a spectrometric method are specified. For amorphous boron, a method is also specified for the determination of the parts insoluble in hydrogen peroxide and the boron soluble in hydrogen peroxide. Furthermore, for titanium boride a method for the determination of the HF/HNO insoluble fractions is specified. It applies to boron carbide, presented as coarse raw material, granular material or powder, as well as sintered and shaped boron carbide, amorphous boron and boron nitride in various degrees of purity as powder or shaped or hot-pressed bodies for the purpose of determining the various chemical constituents. This document also applies to the metal borides aluminum boride, calcium boride, chromium boride, lanthanum boride, magnesium boride, molybdenum boride, titanium boride, and zirconium boride, as well as other metal borides after substance-specific testing. This document has been prepared by Working Committee NA 062-02-64 AA "Chemische Analyse von nichtoxidischen keramischen Roh- und Werkstoffen" ("Chemical analysis of non-oxidic ceramic raw and basic materials") at DIN Standards Committee Materials Testing (NMP).