材料科学与工程导论双语课件教学课件 ppt 作者 陈克正 王玮 刘春延 等编Chapter 5.ppt

Classification of ceramic materials on the basis of application Continuous cooling transformation diagram for the crystallization of a lunar glass (35.5% SiO2, 14.3 wt% TiO2, 3.7 wt% Al2O3, 23.5 wt% FeO, 11.6 wt% MgO, 11.1 wt% CaO, and 0.2 wt% Na2O).Also superimposed on this plot are two cooling curves, labeled “1” and “2”. Fabrication and Processing of Ceramics Processing of Glasses Drawing (pulling) Pressing Blowing Processing fiber Fabrication and Processing of Glasses and Glass–ceramics The press-and-blow technique for producing a glass bottle. Process for the continuous drawing of sheet glass 1. Extrusion (hydro-plastic forming)for clay products Plastic ceramics Fabrication and processing of clay products Fabrication and processing of clay products The steps in (a) solid and (b) drain slip casting using a plaster of paris mold. Application of Glasses Application of Clay Products Bricks glasses cements Small flaws prevent fracture from growing Circuit board 1.Low coefficient of thermal expansion 2.Relatively high temperature capabilities 3.Good dielectric properties Marmite 1.Extremely hard 2.Low electrical conductivity 3.Optically transparent Optical fiber bearing Thank You! College of Materials Science Engineering QUST INTRODUCTION TO MATERIALS SCIENCE AND ENGINEERING Qingdao University of Science Technology Kezheng Chen Wei Wang Chunting Liu 国家级双语教学示范课程 Tableware CHAPTER 5 CERAMIC MATERIALS Structures and Mechanical Properties of Ceramics Application and Processing of Ceramics CONTENTS CERAMIC STRUCTURES Structures are more complex than those for metals The bonding in these materials ranges from purely ionic to covalent. Many materials exhibit a combination of these two bonding types. In ceramic materials, the atomic bonding is predominantly ionic, the crystal structures may be thought of as being composed of electrically charged ions instead of atoms