标准编号：ISO 21814:2019
中文名称：精细陶瓷（高级陶瓷、高级工业陶瓷） 氮化铝粉末的化学分析方法
英文名称：Fine ceramics (advanced ceramics, advanced technical ceramics) — Methods for chemical analysis of aluminium nitride powders
发布日期：2019-02
标准范围
This document specifies methods for the chemical analysis of fine aluminium nitride powders used as
the raw material for fine ceramics.
This document stipulates the determination methods of the aluminium, total nitrogen, boron, calcium,
copper, iron, magnesium, manganese, molybdenum, nickel, potassium, silicon, sodium, titanium,
tungsten, vanadium, zinc, zirconium, carbon, chlorine, fluorine, and oxygen contents in aluminium
nitride powders. The aluminium content is determined by using either an acid pressure decomposition-
CyDTA-zinc back titration method or an acid digestion-inductively coupled plasma-optical emission
spectrometry (ICP-OES) method. The total nitrogen content is determined by using an acid pressure
decomposition-distillation separation-acidimetric titration method, a direct decomposition-distillation
separation-acidimetric titration method, or an inert gas fusion-thermal conductivity method. The
boron, calcium, copper, iron, magnesium, manganese, molybdenum, nickel, potassium, silicon,
sodium, titanium, tungsten, vanadium and zinc contents are determined by using an acid digestion-
ICP-OES method or an acid pressure decomposition-ICP-OES method. The sodium and potassium
contents are determined via an acid pressure decomposition-flame emission method or an acid
pressure decomposition-atomic absorption spectrometry method. The oxygen content is determined
by using an inert gas fusion-IR absorption spectrometry method, while that of carbon is determined
via a combustion-IR absorption spectrometry method or a combustion-conductometry method. The
chlorine and fluorine contents are determined by using a pyrohydrolysation method followed by ion
chromatography or spectrophotometry.
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