- Email: [email protected]
Passivity of Metals
ElectroehimicaActo, Vol. 36, No. S/6, p. 1099,1991 PergamooPressplc. Printed in GreatBritain.
BOOK REVIEW PASSIVITY OF METALS Edited by NORIOSATO and KOJI HASIUMOTO Pergamon Press, Oxford 1990, 781 pp.
The Proceedings of the Sixth International Symposium on Passivation of Metals and Semiconductors held in Sapporo, Japan, from 24 to 28 September 1989 were published in two parts. Part I covers the Passivity of Metals. It appeared as a special issue (Volume 31) of the journal Corrosion Science and was edited by Norio Sato and Koji Hashimoto. Part II of the symposium proceedings containing the papers on the Passivity of Semiconductors was edited by Hideki Hasegawa and Takuo Sugano and was minted as a sunnlement to the journal Solid kate Electrot&. The two-parts are also available separately as nicely bound hard-cover books. There is some overlap: apart from the preface, including a colour photograph of the pretty faces of the participants, six papers with the two overviews and the three papers on Fundamentals of Passivation are reproduced in both volumes. The proceedings appeared in a surprisingly short time after the symposium thanks to the efficient work of the editors, who also prepared an author and subject index. The papers were reviewed before the symposium and were turned in by the authors as camera-ready copy. The 107 papers in Passivity of Metals are divided into nine sections in a somewhat arbitrary way. One finds papers on methods to study passivity in the sections “Characterization and Methods for Passivity Study”, but interesting new developments of methods are also described in most of the remaining sections. Similarly one finds work on “Kinetics of Passivation” not only in this section, but also in others like “Metals and Alloys”, “Amorphous and Corrosion Resistant Alloys”, “Passivity Breakdown”, “Stainless
Steels”, and “Electronic and Optical Properties of Passive Films”. A onedimensional ordering is of course impossible, since in any experimental work on passivity one uses specific materials, and the kinetics of formation and the structure of its surface tilms are characterized by various methods. Passivity is now investigated with many and often uncommon metals and alloys. The arsenal of methods applied to the study of passivity is still expanding. Apart from old and new electrochemical methods, various optical and many surface analytical methods are used to characterize film structure, composition and electronic properties. Mass changes are measured using the quartz oscillator. The surface morphology is investigated with the scanning tunnel microscope. Stress changes are monitored with piezoelectric devices, etc. Progress in theoretical understanding of passivity is reported, eg for pit initiation and growth by analysing stochastic phenomena, and for alloys by analysing corrosion rates and 6lm composition. Passivity of Metals provides an excellent survey of the present state of knowledge in this field. The interested reader will find out that the papers are of quite different quality. An expert will see which passivity phenomena are now well understood and where further research will be necessary. Controversial opinions on “The Present Status and Prospects of Corrosion Science and Engineering” with an emphasis on passivity were exchanged in a round table discussion and are summarized in the final section of the book. K. E. HELJSLER
1099
BOOK REVIEW PASSIVITY OF METALS Edited by NORIOSATO and KOJI HASIUMOTO Pergamon Press, Oxford 1990, 781 pp.
The Proceedings of the Sixth International Symposium on Passivation of Metals and Semiconductors held in Sapporo, Japan, from 24 to 28 September 1989 were published in two parts. Part I covers the Passivity of Metals. It appeared as a special issue (Volume 31) of the journal Corrosion Science and was edited by Norio Sato and Koji Hashimoto. Part II of the symposium proceedings containing the papers on the Passivity of Semiconductors was edited by Hideki Hasegawa and Takuo Sugano and was minted as a sunnlement to the journal Solid kate Electrot&. The two-parts are also available separately as nicely bound hard-cover books. There is some overlap: apart from the preface, including a colour photograph of the pretty faces of the participants, six papers with the two overviews and the three papers on Fundamentals of Passivation are reproduced in both volumes. The proceedings appeared in a surprisingly short time after the symposium thanks to the efficient work of the editors, who also prepared an author and subject index. The papers were reviewed before the symposium and were turned in by the authors as camera-ready copy. The 107 papers in Passivity of Metals are divided into nine sections in a somewhat arbitrary way. One finds papers on methods to study passivity in the sections “Characterization and Methods for Passivity Study”, but interesting new developments of methods are also described in most of the remaining sections. Similarly one finds work on “Kinetics of Passivation” not only in this section, but also in others like “Metals and Alloys”, “Amorphous and Corrosion Resistant Alloys”, “Passivity Breakdown”, “Stainless
Steels”, and “Electronic and Optical Properties of Passive Films”. A onedimensional ordering is of course impossible, since in any experimental work on passivity one uses specific materials, and the kinetics of formation and the structure of its surface tilms are characterized by various methods. Passivity is now investigated with many and often uncommon metals and alloys. The arsenal of methods applied to the study of passivity is still expanding. Apart from old and new electrochemical methods, various optical and many surface analytical methods are used to characterize film structure, composition and electronic properties. Mass changes are measured using the quartz oscillator. The surface morphology is investigated with the scanning tunnel microscope. Stress changes are monitored with piezoelectric devices, etc. Progress in theoretical understanding of passivity is reported, eg for pit initiation and growth by analysing stochastic phenomena, and for alloys by analysing corrosion rates and 6lm composition. Passivity of Metals provides an excellent survey of the present state of knowledge in this field. The interested reader will find out that the papers are of quite different quality. An expert will see which passivity phenomena are now well understood and where further research will be necessary. Controversial opinions on “The Present Status and Prospects of Corrosion Science and Engineering” with an emphasis on passivity were exchanged in a round table discussion and are summarized in the final section of the book. K. E. HELJSLER
1099