摘要
采用沉淀法制备了α－Fe2O3超微粒，在不同的温度和压力下对超微粒粉末进行处理，利用X射线衍射和M5ssbauer谱对高压处理前后的样品进行了分析结果表明，压力主要对微晶的表面或纳米晶体的界面结构产生影响。
α-Fe2O3 ultrafine particles prepared with precipitation method were treated to form nanocrystals at various presures or temperatures, and their microstructures were studied by means of X-ray and Mbssbauer spectroscopy. The results indicate that high pressure affects mainly the structures of surface of micrograins and interface in nanocrystalline materials.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第7期769-773,共5页
Acta Metallurgica Sinica
基金
中国科学院金属研究所快速凝固非平衡合金国家重点实验室及吉林省科学技术委员会资助
关键词
纳米晶体
晶格畸变
压力
温度
α-Fe_2O_3, nanocrystal, Mbssbauer spectrum, high pressure, lattice distortion
