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Modern metallography
84
JOURNALOFTHE
LESS-COMMON METALS
Book Reviews ~o~e~~ ~~~~~~~o~r~~~~~, by R. E. S~~I~LL~~,~N AND K. H. G. ASHBEE, pub~shed by
Pergamon Press, Oxford, 1966; ix +- ZII pp,; price: r7s.6d. (paperback). The authors have realised the impossibility of writing in such a small book a comprehensive account of metallography. Therefore, as they have pointed out in their introduction, they have severely restricted themselves to discussing methods and principles rather than results, and in particular have devoted themselves to recently developed methods. Almost half the book deals with electron microscopy, and as a hundred-page introduction to the subject it probably has not been bettered in a student text. The remaining topics include X-ray techniques, and developments in optical microscopy, such as phase contrast, interferometry, polarised light, and hot stage methods, and though the merits and deficiencies of each are briefly listed, the general approach is rather cramped. A particular example is that of microprobe analysis which is given a mere two pages of text and one diagram. It is this apparent imbalance which makes it difficult to judge to whom the contents of this book have been directed. There are very few students who, on the one hand, possess the basic knowledge of stereographic projections and Miller indices presumed by the authors and yet, on the other hand, require detailed two-page instructions on the preparation of optical microspecimens. The criticism, that some chapters are considerably more elementary than others, should not be overemphasised however, since the book as a whole is quite readable provided that each chapter is approached with the appropriate background knowledge. It is a good value for the E.H. price.
Engelhard Industries Tech&al Bulletin, Vol. 7, Nos. I/Z, 1966; published by Engelhard Industries Inc., Newark, N. J., U.S.A. To commemorate the Centenary of the discovery by Thomas Graham of the diffusion of hydrogen through palladium, a special issue of the EngelbtardInd. Tech. Bull. for June/September 1966 has been published. This issue, with Professor T. R. FLANAGAN of the University of Vermont as Guest Editor, contains comprehensive discussions of the palladium-hydrogen and palladium~euterium systems or of the corresponding systems with palladium alloys. The topics which are discussed include the thermodynamics, physical properties such as electrical resistivity, magnetic susceptibility, thermal E.M.F. etc., the structure and the nature of the bond in palladium-hydrogen and palladium-deuterium alloys, and also the kinetics and model of diffusion and permeation through palladium and palladium alloys. The issue includes a collection of papers by leading research workers who are extending Graham’s pioneer work. In view of the current widespread importance of the interaction of metals with gases, this collective review of the palladium-hydrogen and allied systems should be of interest to many readers of this Journal. It is stated that the Review may be obtained from the Technical Service Department, Engelhard Industries Inc., 1x3 F.F. Astor Street, Newark, New Jersey 07114, U.S.A. J. Less-Common Metals, IZ (1967) 84
JOURNALOFTHE
LESS-COMMON METALS
Book Reviews ~o~e~~ ~~~~~~~o~r~~~~~, by R. E. S~~I~LL~~,~N AND K. H. G. ASHBEE, pub~shed by
Pergamon Press, Oxford, 1966; ix +- ZII pp,; price: r7s.6d. (paperback). The authors have realised the impossibility of writing in such a small book a comprehensive account of metallography. Therefore, as they have pointed out in their introduction, they have severely restricted themselves to discussing methods and principles rather than results, and in particular have devoted themselves to recently developed methods. Almost half the book deals with electron microscopy, and as a hundred-page introduction to the subject it probably has not been bettered in a student text. The remaining topics include X-ray techniques, and developments in optical microscopy, such as phase contrast, interferometry, polarised light, and hot stage methods, and though the merits and deficiencies of each are briefly listed, the general approach is rather cramped. A particular example is that of microprobe analysis which is given a mere two pages of text and one diagram. It is this apparent imbalance which makes it difficult to judge to whom the contents of this book have been directed. There are very few students who, on the one hand, possess the basic knowledge of stereographic projections and Miller indices presumed by the authors and yet, on the other hand, require detailed two-page instructions on the preparation of optical microspecimens. The criticism, that some chapters are considerably more elementary than others, should not be overemphasised however, since the book as a whole is quite readable provided that each chapter is approached with the appropriate background knowledge. It is a good value for the E.H. price.
Engelhard Industries Tech&al Bulletin, Vol. 7, Nos. I/Z, 1966; published by Engelhard Industries Inc., Newark, N. J., U.S.A. To commemorate the Centenary of the discovery by Thomas Graham of the diffusion of hydrogen through palladium, a special issue of the EngelbtardInd. Tech. Bull. for June/September 1966 has been published. This issue, with Professor T. R. FLANAGAN of the University of Vermont as Guest Editor, contains comprehensive discussions of the palladium-hydrogen and palladium~euterium systems or of the corresponding systems with palladium alloys. The topics which are discussed include the thermodynamics, physical properties such as electrical resistivity, magnetic susceptibility, thermal E.M.F. etc., the structure and the nature of the bond in palladium-hydrogen and palladium-deuterium alloys, and also the kinetics and model of diffusion and permeation through palladium and palladium alloys. The issue includes a collection of papers by leading research workers who are extending Graham’s pioneer work. In view of the current widespread importance of the interaction of metals with gases, this collective review of the palladium-hydrogen and allied systems should be of interest to many readers of this Journal. It is stated that the Review may be obtained from the Technical Service Department, Engelhard Industries Inc., 1x3 F.F. Astor Street, Newark, New Jersey 07114, U.S.A. J. Less-Common Metals, IZ (1967) 84