二元合金相图实验教材的研究 试剂的纯度  

Study on the Phase Diagram of Two Components Alloy in Experimental Textbooks The Purity of Reagents

作　　者：蒋海燕[1] 朱方[1] 顾浩[1] 

机构地区：[1]江苏工业学院,江苏常州213016

出　　处：《化学世界》2008年第11期647-649,共3页Chemical World

摘　　要：研究了二元合金相图实验教材。指出铋和锡的纯度过低造成测得其凝固点和合金低共熔点有明显的负误差。为纠正此项负误差,提出了相应的建议。也对实验教材中由此产生的诸问题提出了相应的修正方法。After detailed study on the two components alloy phase diagram in experimental textbooks, it was pointed out that the negative errors of the measured freezing point of Bi and Sn and euteetic point of their alloy were caused by using the impure metals. The methods of correcting these negative ,errors and correlative problems were also suggested.

关 键 词：物理化学实验教科书 二元合金相图 步冷曲线 金属铋 金属锡 

分 类 号：G642.4[文化科学—高等教育学] O642.5[文化科学—教育学]