摘要
1 前言在耐温高达900℃的镍铬铝包硅藻土（NiCrAl/De）复合粉末中,金属铝（Al°）是不可缺的重要因素;而Al°含量的多寡又能影响其热稳定性能,因此,需要准确分析复合粉末中的Al°。用于硅藻土中含有Al<sub>2</sub>O<sub>3</sub>,分析方法必须考虑在Al<sub>2</sub>O<sub>3</sub>共存条件下测定Al°。文献报导了铝工业及黑色冶金工业中分析Al°的方法了。本文介绍笔者分析NiCrAl/De复合粉末中Al°的比值法与选择性溶解法。阐述上述两种方法的依据、特点和优劣,还对相分析结果作出估计,表明这两种方法的分析结果的准确性。
A preliminary evaluation is performed of two methods for determination of metallic Al in NiCrAl/De compound powder The chemical stability and homogeneity of the composition of diatom erath, the different chemical properties of metallic Al and aluminium oxide and their different response to high temperature roasting, strongly suggest and justify suitability of the composition ratio and the selective dissolution methods. Abundant data of chemical analysis of samples confirmed the theoretical grounds and showed that those two methods offer reliable results with good accuracy.
出处
《化工冶金》
CSCD
北大核心
1991年第2期162-166,共5页
关键词
复合粉末
铝
比值法
选择性
溶解法
Compound powder Metallic aluminium Composition ratio method Selective dissolution
