The nitride layer was formed on the surface of ductile cast iron by gas multi-element penetration, and the phase structure and section appearance of nitride layer were analyzed by the XRD and SEM.
球墨铸铁经过气体多元共渗后可在其表面形成氮化层，通过X射线衍射和扫描电镜对渗层的相结构与形貌进行分析。
It suggests that the phase structure can be controlled by lowering the surface energy of polyetherimide and it is a possible way to obtain co-continuous structure with a smaller periodic distance.
因此，通过改变固化温度和聚醚酰亚胺的端基来降低聚醚酰亚胺的表面能，可以在一定程度上调控反应诱导相分离体系的相结构，并获得相间距较小的双连续结构。
Some analysis on painting surface appearance, phase composition and cross-sectional structure also have been carried out by taking XRD and SEM.
利用XRD和SEM对涂层表面形貌、相组成及断面组织结构进行分析。
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