کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1332044 | 979027 | 2008 | 5 صفحه PDF | دانلود رایگان |
Two types of new ternary carbides, Zr2Al4C5 and Zr3Al4C6, have been synthesized and characterized by X-ray powder diffraction. The crystal structures were refined from laboratory X-ray powder diffraction data (CuKα1) using the Rietveld method. These carbides form a homologous series with the general formula (ZrC)mAl4C3 (m=2 and 3). The crystal structures can be regarded as intergrowth structures where the Al4C3-type [Al4C4] layers are the same, while the NaCl-type [ZrmCm+1] layers increase in thickness with increasing m value. The new carbides are most probably the end members of continuous solid-solutions (ZrC)m[Al4−xSix]C3 with 0⩽x⩽0.44.
Crystal structures of new layered carbides (ZrC)2Al4C3 and (ZrC)3Al4C3.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 181, Issue 10, October 2008, Pages 2864–2868