X-ray tomographic analysis of powder-binder separation in SiC green body

X-ray tomographic analysis of powder-binder separation in SiC green body
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SiC 生坯中粉末与粘合剂分离的 X 射线断层扫描分析

DOI:
10.1016/j.jeurceramsoc.2013.06.011
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发表时间:
2013-12
影响因子:
5.7
通讯作者:
Xuanhui Qu
Xuanhui Qu
中科院分区:
材料科学1区
文献类型:
--
作者:
Shidi Yang;Ruijie Zhang;Xuanhui Qu

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为了检测注射成型块状材料中粉末与粘结剂的分离情况,采用x射线断层扫描技术研究了不同初始固相载荷下碳化硅绿体的内部组织。首先,本文提出了一种计算SiC绿体密度的方法。然后,确定重建图像灰度值与绿体固体载荷之间的定量关系。然后,利用灰度图像进行三维重建,分析不同初始固体载荷的绿体中不同的粉胶分离现象。在所有分析样品中,粘结剂堆积区主要分布在浇口和模壁附近。
For detecting powder-binder separation in the injection molded bulk material, the internal microstructures of SiC green bodies with different initial solid loadings were studied by X-ray tomography. First, this paper proposed a method for calculating the density of SiC green bodies. Next, a quantitative relation between gray values in the reconstructed images and the solid loadings of green bodies was determined. Then, after 3D reconstruction by using the gray scale images, the different powder-binder separation phenomenon in the green bodies with different initial solid loadings were analyzed. In the all analyzed samples, binder accumulation regions were mainly found near the gate and die wall.
DOI: --
发表时间: 1990
期刊: --
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