Strengthening of Ceramics

Strengthening of Ceramics
Author: Henry Paul Kirchner
Publisher: CRC Press
Total Pages: 257
Release: 2014-07-22
Genre: Technology & Engineering
ISBN: 1498710468

This book presents the descriptions of individual treatments and resulting improvements in the strength of polycrystalline ceramics and oxide single crystals. It provides information on potential applications, limitations of the treatments, design considerations, and costs.

Ion Exchange Strengthening of a Leucite-Reinforced Dental Ceramic

Ion Exchange Strengthening of a Leucite-Reinforced Dental Ceramic
Author: Jose J. Villalobos
Publisher:
Total Pages: 93
Release: 1997-07-01
Genre:
ISBN: 9781423571681

Demand for improved dental esthetics has led to an increased use of ceramics in dentistry, specifically all-ceramic restorations. Unfortunately, the brittle characteristics of dental ceramics remain an area of concern and limit their applications. Metal-ceramic restorations have proven successful, but problems associated with the use of metal substructures exist. Numerous all- ceramic systems have been introduced, however strengths equivalent to metal- ceramic restorations have not been obtained. As a result, strengthening techniques are being actively investigated.

Mechanical Properties of Ceramics

Mechanical Properties of Ceramics
Author: Joshua Pelleg
Publisher: Springer Science & Business
Total Pages: 782
Release: 2014-04-22
Genre: Science
ISBN: 3319044923

This book discusses the mechanical properties of ceramics and aims to provide both a solid background for undergraduate students, as well as serving as a text to bring practicing engineers up to date with the latest developments in this topic so they can use and apply these to their actual engineering work. Generally, ceramics are made by moistening a mixture of clays, casting it into desired shapes and then firing it to a high temperature, a process known as 'vitrification'. The relatively late development of metallurgy was contingent on the availability of ceramics and the know-how to mold them into the appropriate forms. Because of the characteristics of ceramics, they offer great advantages over metals in specific applications in which hardness, wear resistance and chemical stability at high temperatures are essential. Clearly, modern ceramics manufacturing has come a long way from the early clay-processing fabrication method, and the last two decades have seen the development of sophisticated techniques to produce a large variety of ceramic material. The chapters of this volume are ordered to help students with their laboratory experiments and guide their observations in parallel with lectures based on the current text. Thus, the first chapter is devoted to mechanical testing. A chapter of ductile and superplastic ceramic is added to emphasize their role in modern ceramics (chapter 2). These are followed by the theoretical basis of the subject. Various aspects of the mechanical properties are discussed in the following chapters, among them, strengthening mechanisms, time dependent and cyclic deformation of ceramics. Many practical illustrations are provided representing various observations encountered in actual ceramic-structures of particularly technical significance. A comprehensive list of references at the end of each chapter is included in this textbook to provide a broad basis for further studying the subject. The work also contains a unique chapter on a topic not discussed in other textbooks on ceramics concerning nanosized ceramics. This work will also be useful as a reference for materials scientists, not only to those who specialize in ceramics.

Fracture Mechanics of Ceramics

Fracture Mechanics of Ceramics
Author: R.C. Bradt
Publisher: Springer Science & Business Media
Total Pages: 621
Release: 2010-01-11
Genre: Technology & Engineering
ISBN: 0387289208

The 8th International Symposium on fracture mechanics of ceramics was held in on the campus of the University of Houston, Houston, TX, USA, on February 25-28, 2003. With the natural maturing of the fields of structural ceramics, this symposium focused on nano-scale materials, composites, thin films and coatings as well as glass. The symposium also addressed new issues on fundamentals of fracture mechanics and contact mechanics, and a session on reliability and standardization.

Chemical Strengthening of Ceramic Materials

Chemical Strengthening of Ceramic Materials
Author:
Publisher:
Total Pages: 139
Release: 1966
Genre:
ISBN:

An investigation of the effect of compressive surface layers on the strength of polycrystalline ceramic bodies is described. Low expansion surface layers were formed on conventional ceramics by chemical reactions at high temperatures. Failure, by shearing of the surface layers, was prevented by establishing gradual variations in composition within the body. Chemical strengthening was attempted with alumina, titania, spinel, magnesia, forsterite, steatite, nickel oxide, silica and cordierite bodies and was achieved with several of these materials. Glazing and quenching also resulted in improved flexural strength. Combined processes involving chemical strengthening, atmospheric treatments, glazing and quenching were investigated. In some cases strength increases of more than 90% were observed. The thermal shock resistance of some of the samples was improved. Abrasion of the surfaces of some of the treated samples did not result in loss of strength. (Author).