精细陶瓷（先进陶瓷 先进技术陶瓷） - 氮化铝粉末化学分析方法

[中文适用范围]： 本文件规定了用作精细陶瓷原料的精细氮化铝粉末的化学分析方法。 本标准规定了铝、总氮、硼、钙、铜、铁、镁、锰、钼、镍、钾、硅、钠、钛、钨、钒、锌、锆、碳、氯、氟的测定方法，以及氮化铝粉末中的氧含量。 铝含量通过使用酸压分解-CyDTA-锌反滴定法或酸消解-电感耦合等离子体发射光谱（ICP-OES）法测定。 总氮含量的测定采用酸压分解-蒸馏分离-酸滴定法、直接分解-蒸馏分离-酸滴定法或惰性气体熔融-热导法。 采用酸消解-ICP-OES 法或酸压分解-ICP 法测定硼、钙、铜、铁、镁、锰、钼、镍、钾、硅、钠、钛、钨、钒和锌含量-直读光谱仪方法。 钠、钾含量的测定采用酸压分解-火焰发射法或酸压分解-原子吸收光谱法。 氧含量采用惰性气体熔融-红外吸收光谱法测定，碳含量采用燃烧-红外吸收光谱法或燃烧-电导法测定。 氯和氟含量通过使用热水解方法然后离子色谱法或分光光度法测定。 [外文原描述]： 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.