精细陶瓷（高级陶瓷 高级工业陶瓷）高纯钛酸钡粉末化学分析方法

[中文适用范围]： 本文件规定了用作精细陶瓷原料的高纯钛酸钡细粉的化学分析方法。 本标准规定了钡、钛、铝、镉、钙、钴、镝、铁、铅、镁、锰、镍、铌、钾、硅、钠、锶、钒、锆、碳、氧和元素的测定方法。 高纯钛酸钡粉末中的氮含量。 主要元素钡和钛的含量通过使用酸分解-重量分析法或酸分解-电感耦合等离子体-光学发射光谱(ICP-OES)法测定。 采用酸消解-ICP-OES 法同时测定铝、镉、钙、铬、钴、镝、铁、铅、镁、锰、镍、铌、钾、硅、锶、钒和锆含量。 氮含量采用惰性气体熔融-热导法测定，氧含量采用惰性气体熔融-红外吸收光谱法测定。 最后，使用燃烧-红外吸收光谱法或燃烧-电导法测定碳含量。 [外文原描述]： ISO 21813 specifies methods for the chemical analysis of fine high purity barium titanate powders used as the raw material for fine ceramics. ISO 21813 stipulates the determination methods of the barium, titanium, aluminium, cadmium, calcium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, sodium, strontium, vanadium, zirconium, carbon, oxygen and nitrogen contents in high purity barium titanate powders. The barium and titanium contents, the major elements, are determined by using an acid decomposition-gravimetric method or an acid decomposition-inductively coupled plasma-optical emission spectrometry (ICP-OES) method. The aluminium, cadmium, calcium, chromium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, strontium, vanadium and zirconium contents are simultaneously determined via an acid digestion-ICP-OES method. The nitrogen content is determined by using an inert gas fusion-thermal conductivity method, while that of oxygen is determined via an inert gas fusion-IR absorption spectrometry method. Finally, the carbon content is determined using a combustion-IR absorption spectrometry method or a combustion-conductometry method.