铝基复合材料中不同形态碳分析方法的研究  

Study on the analytical methods for determining different forms of carbon in aluminum matrix composites

作　　者：杨春晟[1] 杨峥[1] 刘爽[1] 曹维[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《中国无机分析化学》2011年第1期73-77,共5页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：本文研究铝基复合材料中碳元素不同存在形式(总碳、游离碳、碳化硅)的检测方法。采用高频感应燃烧红外法测定总碳(2.00%～6.00%),酸溶过滤分离-高频红外法测定游离碳(0.10%～1.50%),重量法测定碳化硅(1%～35%)的含量。以上三个方法的精密度试验RSD%(n=8)最大分别为4.2%、1.2%、0.51%,测定游离碳和碳化硅(SiC)样品的加标回收率分别是98.5%～100.2%,99%～101%。这三种方法都快速、可靠,已应用于铝基复合材料的实际分析工作中。The analytical methods for determining different forms of carbon （total carbon ,free carbon and silicon carbide ） in aluminium matrix composites were investigated in this paper. Infrared absorption meth- od after combustion in an induction furnace, acid dissolving separation-infrared absorption method, and gravimetric method were used to determine the total carbon of 2.00%-6.00% （4.2% RSD）, the free carbon of 0.10%-1. 50% （1.2%RSD） and the silicon carbide of 1%-35% （0.51% RSD）, respectively（n= 8）. The recoveries for free carbon and silicon carbide were 98.5%-100.2% and 99%-101%, respective ly. These methods are rapid and accurate, and have been applied for analysis of carbon in aluminum matrix composites.

关 键 词：高频红外法 重量法 总碳 游离碳 碳化硅 铝基复合材料 

分 类 号：O655.1[理学—分析化学]