陶瓷ceramics材料概论.pptVIP

Chemical Properties Crystalline:Most of ceramics are crystalline,but,glasses are amorphous,not crystalline at all Chemical resistance:Ceramics have an excellent chamical resistance(such as corrosion resistance) Composition:In general,we do not state the chemical composition of ceramics Fabricability AND Other Properties Fabrication:Ceramics cannot be melted and cast to shapes like metals Costly:Most ceramics require expensive processing to bring them to many machine parts,and the technology of sol-gel(溶胶凝胶) does not exist on a commercial basis in 2000,but it may come.Are you??? Wear resistance Thermal Shock resistance Applications of Ceramic Uses in the Construction Industry 1)Ceramic materials play an important role in construction industry (2)Products such as floor,wall and roofing-tile,brick are the building blocks in the world of construction Ceramic tile Clay brick Use in Refractories Ceramic crucible The ceramic is one of the refractories Refractory ceramic can withstand volatile and high-temperature. Ceramic fiber Medical Surgeons are using bio-ceramic materials for repair and replacement of human hips , knees,and other body parts. Dentists are using ceramics for tooth Electrical Applications Ceramic is important in electronic industry Ceramic have a wide range of electrical properties including insulating ,semi-conducting ,superconducting,piezoelectric and magnetic. Environmental and space applications The cellular ceramics help catalytic convert noxious hydrocarbon into harmless carbon. It can be used in oil spill containment booms Ceramics are used in space shuttle as thermal barrier tiles Grey pottery Eaves tile Glazed pottery Porcelain The Tang Tricolor The blue and white porcelain Development And Future Illustration to ceramics Development And Future Ancient Present Material High impurity Particle non-uniform High purity Craft Manual work Advanced technology Application Bowl,Plate,ves