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Frenkel defects

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Published: 01 October 2021
Fig. 2 Schottky, Frenkel, and antisite defects in an ionic crystal More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2021
DOI: 10.31399/asm.tb.ciktmse.t56020013
EISBN: 978-1-62708-389-8
... Ti. Electronegativity and valence are secondary considerations. Problem 17: Which Type of Defect Is It? Identify the type of defect shown and what effect it would have on the density of the material. Frenkel defect, no effect on the density Frenkel defect, increase the density...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2021
DOI: 10.31399/asm.tb.ciktmse.9781627083898
EISBN: 978-1-62708-389-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2021
DOI: 10.31399/asm.tb.ciktmse.t56020001
EISBN: 978-1-62708-389-8
... planes, and dislocation passage through precipitates. It also points out important structure-property correlations. antisite defects Burgers vector edge dislocations Frenkel defects grain size impurities mechanical properties pinning Schottky defects screw dislocations solid solution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240017
EISBN: 978-1-62708-251-8
... are trapped in the lattice, because they do not have time to diffuse out. Vacancies can form by several mechanisms. In the Frenkel mechanism ( Fig. 2.2 ), an atom is displaced from its normal lattice position into an interstitial site. However, this requires quite a bit of energy—the energy to form...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310001
EISBN: 978-1-62708-326-3
...). Metals at any temperature above absolute zero contain some vacancies. Vacancies can form by several mechanisms. In the Frenkel mechanism ( Fig. 20 ), an atom is displaced from its normal lattice position into an interstitial site. However, this requires quite a bit of energy—first, the energy to form...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420363
EISBN: 978-1-62708-310-2
..., crystalline imperfections, and the formation of surface or planar defects. It also discusses the use of X-ray diffraction for determining crystal structure. crystalline structures line defects metallic structure planar defects plastic deformation point defects volume defects X-ray diffraction...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2022
DOI: 10.31399/asm.tb.dsktmse.t56050001
EISBN: 978-1-62708-432-1
... for diffusing atoms. However, such vacancies should form in a way that does not alter the charge of the oxide. Here, Schottky and Frenkel defects assist diffusion, as the cations diffuse through cationic vacancies and the anions diffuse through the anionic vacancies. The activation energies may differ for both...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060013
EISBN: 978-1-62708-261-7
... Abstract This chapter introduces many of the key concepts on which metallurgy is based. It begins with an overview of the atomic nature of matter and the forces that link atoms together in crystal lattice structures. It discusses the types of imperfections (or defects) that occur in the crystal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410551
EISBN: 978-1-62708-265-5
... the formation of a cascade of vacancy-interstitial pairs or Frenkel defects by a nitrogen ion. The implanted ions, the lattice defects, and the resulting compressive stresses all act to produce very high strength and hardness of the implanted layer. Fig. 22.4 Schematic illustration of implantation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860163
EISBN: 978-1-62708-348-5
... metals: there is no such thing as a low temperature resistivity for these metals. Changes in impurity and defect content, which are minor from an industrial standpoint, may cause dramatic changes in the low-temperature resistivity. For example, recent measurements of commercial copper satisfying the CD...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.9781627083485
EISBN: 978-1-62708-348-5