物理化学学报2011，Vol.27Issue(12)：2915-2919,5.DOI:10.3866/PKU.WHXB20112915
感应熔炼高锰硅的结构和形貌特性
Structure and Morphology of Induction-Melted Higher Manganese Silicide
摘要
Abstract
Field emission scanning microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDXS) were used to study the morphology and composition of secondary phase precipitations in induction-melted higher manganese silicide (HMS). Striations of the secondary phase were observed in individual HMS crystals with an average interval of 5-30 urn and a thickness of ~30 nm. The chemical composition of the striations was examined and found to be MnSi, which was observed as an amorphous phase by high resolution transmission electron microscopy (HRTEM). The crystal structure of HMS was determined by selective area electron diffraction (SAED) and the results indicated a single Mn4Si7 phase in the as-prepared material and no other incommensurate HMS phases were found. After ball milling and hot pressing many defects and stress fields were observed in the HMS by transmission electron microscope (TEM), which differentiated substantially from the morphology of the as-melted HMS.关键词
高锰硅/MnSi条纹/非晶/晶体结构/缺陷Key words
Higher manganese silicide/ MnSi precipitation/ Amorphous/ Crystal structure/ defect分类
化学化工引用本文复制引用
周爱军,崔恒冠,李晶泽,赵新兵..感应熔炼高锰硅的结构和形貌特性[J].物理化学学报,2011,27(12):2915-2919,5.基金项目
国家自然科学基金(51102039),中央高校基本科研业务费(ZYGX2010J033)和中国博士后科学基金(20100481375,201104640)资助项目 （51102039）
