Lecture notes on equilibrium point defects and thermophysical properties of metals / Yaakov Kraftmakher.

Format:

Book

Author/Creator:

Kraftmakher, I︠A︡. A.

Language:

English

Subjects (All):

Metals--Thermal properties.

Metals.

Phase rule and equilibrium.

Physical metallurgy.

Metals--Effect of high temperatures on.

Physical Description:

1 online resource (340p.)

Place of Publication:

Singapore : World Scientific, 2000.

Language Note:

English

Summary:

A discussion of equilibrium point defects and the thermophysical properties of metals. It includes experimental results and theoretical considerations, and covers: methods for studying point defects; modulation calorimetry and related techniques; positron annihilation; and more. Despite the significant progress in the study of point defects in metals, some important problems still do not have unambiguous solutions. One the most practically important questions relates to equilibrium defect concentrations. There exist two opposite viewpoints: (1) defect contributions to physical properties of metals at high temperatures are small and cannot be separated from the effects of anharmonicity; the equilibrium defect concentrations at the melting points are in the range of 10-4 to 10-3; (2) in some cases, defect contributions to the specific heat of metals are much larger than nonlinear effects of anharmonicity and can be separated without crucial errors; the equilibrium concentrations at the melting points are of the order 10-3 in low-melting-point metals and 10-2 in high-melting-point metals.;This work discusses the experimental results and theoretical considerations favouring each claim. At the time of publication, the majority of the scientific community hold the first viewpoint. Regrettably, the data supporting the second viewpoint has not been displayed and discussed together, and the criticism of this viewpoint has never included a detailed analysis. Important arguments supporting this viewpoint appeared in the 1990s. In this book, the main attention is paid to equilibrium point defects in metals and their relation to thermophysical properties of metals. Along with a discussion on experimental data and theoretical estimates now available, some approaches are proposed that seem to be most suitable for settling the question.

Contents:

Basic theory of point-defect formation; methods for studying point defects; modulation calorimetry and related techniques; enthalpy and specific heat of materials; thermal expansion of metals; electrical resistivity of metals; positron annihilation; other methods; equilibration of point defects; parameters of vacancy formation.

Notes:

Bibliographic Level Mode of Issuance: Monograph

Includes bibliographical references and index.

ISBN:

9786611869656

9789812384843

9812384847

9781281869654

1281869651