26Al Tracer Diffusion in Nominally Undoped Single Crystalline α-Al2O3
26Al Tracer Diffusion in Nominally Undoped Single Crystalline α-Al2O3
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DOI：
10.4028/www.scientific.net/ddf.323-325.75
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发表时间：
2012-04
影响因子：
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通讯作者：
P. Fielitz;G. Borchardt;S. Ganschow;R. Bertram
中科院分区：
文献类型：
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作者：
P. Fielitz;G. Borchardt;S. Ganschow;R. Bertram
在未掺杂的α-Al_2O_3单晶中同时进行了18O和26Al示踪扩散实验。结果表明，在未掺杂氧化铝中，铝的体扩散系数远大于氧的体扩散系数。比较掺钛和未掺杂α-Al_2O_3单晶的~(26)Al示踪扩散系数，发现铝的体积扩散系数对掺钛不敏感。
Simultaneous 18O and 26Al tracer diffusion experiments were performed in nominally undoped single crystalline α-Al2O3. The results clearly show that the bulk diffusivity of aluminium is much higher than the bulk diffusivity of oxygen in nominally undoped alumina. Comparing the 26Al tracer diffusivities of Ti doped (300-400 wt. ppm Ti) and nominally undoped single crystalline α-Al2O3 one finds that the aluminium bulk diffusivity is insensitive to the Ti doping.