Effects of seeding and amounts of Y_2O_3: Al_2O_3 additives on grain growth in Si_3N_4 ceramics

M. Belmonte; A. de Pablos; M.I. Osendi; P. Miranzo

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Effects of seeding and amounts of Y_2O_3: Al_2O_3 additives on grain growth in Si_3N_4 ceramics

机译：Y_2O_3：Al_2O_3添加剂的晶种和添加量对Si_3N_4陶瓷晶粒生长的影响

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The effect of changing the Y_2O_3:Al_2O_3 additive ratio over grain growth of Si_3_4 materials with and without β-seeds addition is studied. Increasing the amount of Al_2O_3 from 2 to 4 wt.% strongly affects grain growth in non-seeded materials whereas it hardly does in seeded ones. Results suggest that β-seeds addition changes the rate limiting step for the Si_3N_4 grain growth from diffusion to interfacial reaction.

机译：研究了改变Y_2O_3：Al_2O_3添加比例对添加和不添加β种子的Si_3_4材料晶粒生长的影响。 Al_2O_3的含量从2 wt。％增加到4 wt。％会强烈影响非种子材料中的晶粒生长，而几乎不会影响种子材料中的晶粒生长。结果表明，β种子的添加改变了Si_3N_4晶粒生长从扩散到界面反应的限速步骤。

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《Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing》 |2008年第2期|p.185-189|共5页
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M. Belmonte; A. de Pablos; M.I. Osendi; P. Miranzo;
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正文语种 eng
中图分类工程材料学;
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Effects of seeding and amounts of Y_2O_3: Al_2O_3 additives on grain growth in Si_3N_4 ceramics

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