chapter 5 - Chapter 5 Imperfections in Solids _ 5.1...

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Chapter 5 Imperfections in Solids 第第第 第第第第第第第第 _ 第第第第 吉吉吉吉吉吉吉吉吉吉吉吉吉 吉吉吉
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10/11/11 Chapter 5 Imperfections in Solids 2 5.1 INTRODUCTION crystalline defect: a lattice irregularity having one or more of its dimensions on the order of an atomic diameter. Classification of crystalline imperfections: 1. point defects (those associated with one or two atomic positions, Impurities in solids ), 2. linear defects(or one-dimensional), 3. interfacial defects, or boundaries, which are two-dimensional. 第第第第 第第第第第第第第第
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10/11/11 Chapter 5 Imperfections in Solids 3 5.2 POINT DEFECTS IN METALS Vacancy: A normally occupied lattice site from which an atom or ion is missing. Self-interstitial. A host atom or ion that is positioned on an interstitial lattice site. 第第 ( 第第 ) 第第第第
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Chapter 5 Imperfections in Solids 4 5.2 POINT DEFECTS IN METALS Vacancy: The equilibrium number of vacancies Nv: Here: N is the total number of atomic sites, Qv is the energy required for the formation of a vacancy, T is the absolute temperature1 in kelvins, and k is the gas or Boltzmann’s constant. ) exp(
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This note was uploaded on 10/11/2011 for the course ENG 210 taught by Professor Zhang during the Spring '10 term at Tianjin University.

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chapter 5 - Chapter 5 Imperfections in Solids _ 5.1...

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