X-ray analysis of powder-binder separation during SiC injection process in L-shaped mould

X-ray analysis of powder-binder separation during SiC injection process in L-shaped mould
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L 形模具中 SiC 注射过程中粉末与粘合剂分离的 X 射线分析

DOI:
10.1016/j.jeurceramsoc.2014.08.022
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发表时间:
2015
影响因子:
5.7
通讯作者:
Shidi Yang, Ruijie Zhang, Xuanhui Qu
Shidi Yang, Ruijie Zhang, 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l型结晶器中粉末与粘结剂的分离,采用x射线断层扫描技术对l型和长方体碳化硅绿体进行了扫描。然后,确定重建图像的灰度值与固体载荷之间的定量关系。其次,讨论了l型绿体的固体载荷分布。在分析样品中,粘结剂堆积区主要出现在浇口和模具边界附近,高粉含量区形成在模具中下部。最后,分析了3个注射参数(注射速度、温度和注射压力)对充型过程中粉胶分离的影响。
For detecting powder-binder separation in the L-shaped mould, the L-shaped and cuboid SiC green bodies were scanned by using X-ray tomography. Then, a quantitative relation between the gray values in the reconstructed images and the solid loadings was determined. Next, the solid loading distribution of the L-shaped green bodies was discussed. In the analyzed samples, the binder accumulation area were mainly found near the gate and mould boundary, and the high powder content area formed in the middle lower part of the mould. Finally, the effects of three injection parameters (injection speed, temperature and injection pressure) on the powder-binder separation during mould filling were analyzed.
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