摘要
利用透射电镜(TEM)和X射线小角衍射技术(SAXS)研究了磁场等温退火工艺参数对Alnico8合金的微观组织的影响,样本的晶格结构清晰可见。结果表明,在等温退火阶段Alnico8合金通过调幅分解形成两相结构,棒状的铁磁相(1α相)粒子高度有序地弥散在弱磁性相(2α相)当中。其中,1α相的平均长度由SAXS测得,并与TEM照片数据进行了验证比对。本文着重研究了1α相粒子平均长度随等温退火处理的温度及时间参数的改变规律,结果显示样本的磁性能与其微观结构有一定相关性。
Transmission electron microscopy（TEM） observation was used for studing spinodal decomposition in Alnico8 alloy annealed in various conditions.During annealing,the high temperature phase of the Alnico8 decomposes into two phases by spinodal decomposition.The ferromagnetic α_1 phase is finely dispersed throughout the weakly magnetic α_2 phase.The mean length of α_1 precipitates was measured by small angle X-ray scattering（SAXS） technology and validated by the analysis of the TEM images.The influence factors on the mean length,such as time and temperature of isothermal annealing were investigated.The results show the relationship between the magnetic properties and the microstructure.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2011年第1期134-138,共5页
Journal of Materials Science and Engineering
基金
浙江省科技专项资助项目(2008C11121)
