【作者】 徐小荣； 潘春旭； 杨世柏；

【Author】 Xu Xiaorong, Pan Chunxu, Yang Shibo(Wuhan University of Technology, Wuhan 430063, China; Wuhan University, Wuhan 430072, China)

【机构】 武汉理工大学材料科学与工程学院； 武汉大学物理技术学院；

【摘要】 应用电子探针(EPMA)、扫描电镜(SEM)和能谱仪(EDS)对共沉降法制备的W-Mo-Ti系梯度功能材料的化学成分和显微组织特征进行了研究。结果表明,试验材料整体致密,化学成分和显微组织具有梯度变化特征。富W区、W-Mo区、富Mo区颗粒以机械混合的形式存在;以Mo为主要组分的Mo-Ti梯度层,也是以机械混合为主;以Ti为主要组分的Mo-Ti梯度层,主要以多角形β相存在;富Ti区主要以球形α相存在。更多还原

【Abstract】 Chemical composition and microstructures of W - Mo - Ti functionally gradient materials prepared by co -sedimentation are studied with electron probe microscopic analysis (EPMA) , scanning electron microscopy (SEM) and energy - dispersive spectrometry (EDS). The experimental sample is dense as a whole. Elemental distribution and micro-structures vary gradually. In the layers of enriched W, W - Mo and enriched Mo, the grains are mechanically mixed. In Mo - Ti gradient layer with more Mo, the grains are mechanically mixed mainly. In Mo - Ti gradient layer with more Ti, there is more polyhedronal βphase. In the layer enriched Ti, Ti exists mainly as spherical αphase.更多还原