کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1795447 | 1023722 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Growth mechanism of Ti3SiC2 single crystals by in-situ reaction of polycarbosilane and metal titanium with CaF2 additive Growth mechanism of Ti3SiC2 single crystals by in-situ reaction of polycarbosilane and metal titanium with CaF2 additive](/preview/png/1795447.png)
Free-growth morphology of crystalline grains was firstly observed within the cavities of titanium silicon carbide (Ti3SiC2) ceramic prepared by in-situ reaction of polycarbosilane (PCS) and metal titanium. The pores produced by pyrolysis of PCS in Ti3SiC2 ceramic can offer space for free growth of Ti3SiC2 and the liquid of CaF2 additive promoted the formation of Ti3SiC2 within such cavity. The perfect two-dimensional morphology reflects the growth of Ti3SiC2 single crystals. The growth mechanism of concentric layers on the {0 0 1} face was proposed. Berg's effect on the step movement was put forward and analyzed. From the view of the process of the movement of growth units, the reasons of stability and why it could be destroyed were discussed.
Journal: Journal of Crystal Growth - Volume 310, Issue 14, 1 July 2008, Pages 3372–3375