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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Nanophase ceramic ： ウィキペディア英語版 Nanophase ceramic Nanophase ceramics are ceramics that are nanophase materials (that is, materials that have grain sizes under 100 nanometers). They have the potential for superplastic deformation.〔 Because of the small grain size and added grain boundaries properties such as ductility, hardness, and reactivity see drastic changes from ceramics with larger grains. ==Structure of Nanophase Ceramics== The structure of nanophase ceramics is not too different than that of ceramics. The main difference is the amount of surface area per mass. Particles of ceramics have small surface areas, but when those particles are shrunk to within a few nanometers, the surface area of the same amount of a mass of a ceramic greatly increases.〔("What's So Special about the Nanoscale?" ). nano.gov. Retrieved December 1, 2014.〕 So in general, nanophase materials have greater surface areas than that of a similar mass material at a larger scale.〔 This is important because if the surface area is very large the particles can be in contact with more of their surroundings, which in turn increases the reactivity of the material.〔 The reactivity of a material changes the material's mechanical properties and chemical properties, among many other things.〔 This is especially true in nanophase ceramics. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nanophase ceramic」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.