Effects of Grain-boundary Chemistry on Fracture Mechanisms in Highly Pure Si3N4 Ceramics PDF Download
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Author: Alexander Ziegler
Publisher:
ISBN:
Category :
Languages : en
Pages : 350
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Author: Alexander Ziegler
Publisher:
ISBN:
Category :
Languages : en
Pages : 350
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Book Description
Author: R. O. Ritchie
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
The effects of grain-boundary chemistry on the mechanical properties were investigated on high-purity silicon nitride ceramics, specifically involving the role of oxygen. Varying the grain-boundary oxygen content, by control of oxidizing heat treatments and sintering additives, was found to result in a transition in fracture mechanism from transgranular to intergranular fracture, with an associated increase in fracture toughness. This phenomenon is correlated to an oxygen-induced change in grain-boundary chemistry that appears to affect fracture by ''weakening'' the interface, facilitating debonding and crack advance along the boundaries, and consequently toughening by grain bridging. It is concluded that if the oxygen content in the thin grain-boundary films exceeds a lower limit, which is {approx}0.87 equiv% oxygen content, then the interfacial structure and bonding characteristics favor intergranular debonding during crack propagation; otherwise, transgranular fracture ensues.
Author: Alexander Ziegler
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
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![The Effect of the Grain Boundary Phase on the Fracture Toughness of [beta]-Si3N4 Ceramics PDF](https://books.google.com/books/content/images/frontcover/p7l5PgAACAAJ?fife=w80-h100)
Author: Irene Mona Peterson
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Category :
Languages : en
Pages :
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Author: Irene Mona Peterson
Publisher:
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Category :
Languages : en
Pages : 366
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Author: Teresa Lynn Trott
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ISBN:
Category : Ceramics
Languages : en
Pages : 150
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Author: R.C. Bradt
Publisher: Springer Science & Business Media
ISBN: 1461558530
Category : Technology & Engineering
Languages : en
Pages : 591
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Book Description
Second part of the proceedings of the Sixth International Symposium held in Karlsruhe, Germany, July 18-20, 1995.
Author: R. C. Bradt
Publisher: Springer Science & Business Media
ISBN: 1461570239
Category : Technology & Engineering
Languages : en
Pages : 366
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Book Description
These volumes, 7 and 8, of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at Virginia Polytechnic Institute and State University, Blacksburg, Virginia on June 19, 20 and 21, 1985. These proceedings constitute the fourth pair of volumes of a continuing series of conferences. The theme of this conference, as the previous three, focused on the mechanical behavior of ceramic materials in terms of the characteristics of cracks, particularly the roles which they assume in the fracture process. The 78 contributed papers by over 100 authors and co-authors represent the current state of the field. They address many of the theoretical and practical problems of interest to those concerned with brittle fracture. The program chairmen gratefully acknowledge the financial assistance for the Symposium provided by the EXXON Foundation, the Army Research Office, the Natio~al Science Foundation, and the Office of Naval Research. Without their support, this conference simply would not have been possible. The suggestions of Drs. J. C. Hurt, R. C. Pohanka, and L. Toth were particularly helpful in assuring the success of this symposium. Special appreciation is extended to Professor J. I. Robertson, C. P. Miles Professor of History. whose presentation following the banquet on the American Civil War was very well received by the audience. Finally, we wish to also thank our joint secretaries, especially Karen Snider, for their patience and help in finally bringing these proceedings to press.
Author: R.C. Bradt
Publisher: Springer Science & Business Media
ISBN: 1461533481
Category : Technology & Engineering
Languages : en
Pages : 645
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Book Description
These volumes, 9 and 10, of Fracture Mechanics of Ceramics constitute the proceedings of an international symposium on the fracture mechanics of ceramic materials held at the Japan Fine Ceramics Center, Nagoya, Japan on July 15, 16, 17, 1991. These proceedings constitute the fifth pair of volumes of a continuing series of conferences. Volumes 1 and 2 were from the 1973 symposium, volumes 3 and 4 from a 1977 symposium, and volumes 5 and 6 from a 1981 symposium all of which were held at The Pennsylvania State University. Volumes 7 and 8 are from the 1985 symposium which was held at the Virginia Polytechnic Institute and State University. The theme ofthis conference, as for the previous four, focused on the mechanical behavior ofceramic materials in terms of the characteristics ofcracks, particularly the roles which they assume in the fracture processes and mechanisms. The 82 contributed papers by over 150 authors and co-authors represent the current state of that field. They address many of the theoretical and practical problems ofinterest to those scientists and engineers concerned with brittle fracture.
Author: Materials Research Society. Meeting
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 232
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Book Description
The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. This book, first published in 2005, showcases how electron microscopy is applied to materials problems and to encourage ideas from both the solid-state and biological communities.
