کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
821239 | 906749 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The sintering and grain growth behaviour of ceramic–carbon nanotube nanocomposites The sintering and grain growth behaviour of ceramic–carbon nanotube nanocomposites](/preview/png/821239.png)
The sintering and grain growth behaviour of alumina + 2, 3.5 and 5 wt.% carbon nanotubes (CNTs) and alumina + 2 wt.% carbon black nanocomposites prepared by Spark Plasma Sintering (SPS) were studied. The addition of CNTs to ceramics produces a large reduction in the sintering temperature required for their complete densification and a significant grain size refinement by a previously unreported mechanism. The CNTs form a strong entangled network around the grains, which constrains the normal and abnormal grain growth. An alumina/alumina + 2 wt.% CNT/alumina laminate structure was prepared to demonstrate directly the large grain-growth retardation effect of CNTs. These effects open up the possibility of using CNTs as a sintering aid to control the sintering behaviour and microstructures of ceramics in bulk, laminate and functionally gradient (FGM) form.
Journal: Composites Science and Technology - Volume 70, Issue 6, June 2010, Pages 947–952