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【请问】：crystallite, grain, particle的区别
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crystallite, grain,particle的区别，各自的特征？ 多谢达人指点。 [ Last edited by NJUT_tiger on 2008-12-18 at 09:49 ] |
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gentle8306
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crystallite和grain通常可以互用。只不过Metallurgist常用grain代表晶粒，还有表示晶界不用“crystallite boundary"而用“grain boundary”。 下面为百科字典解释，请参考。 Encyclopedia > Crystallite A crystallite is a domain of solid-state matter that has the same structure as a single crystal. The crystallised matter is rarely found as single crystal, except for a few cases (gems, silicon single crystals for the electronic industry, single crystals of a nickel-based superalloy for the military aircraft engines). Most of time, it is polycrystalline, i.e. it is made of plenty of single crystals - the crystallites - that "stick" together. The crystallite size can vary from a few nanometers to several millimeters. Metallurgists often refer to "grains"; thus, the boundary between two crystallites is the grain boundary, the fracture can be an intergranular fracture or a transgranular fracture. But the term "crystallite boundary" does not exist, it is "grain boundary". |
8楼2008-12-25 08:02:31
gentle8306
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