ceramics - MEGR 2180 eramics Ceramics MEGR 2180 Engineering...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: MEGR 2180 eramics Ceramics MEGR 2180 Engineering Materials etals lastics eramics omposites Metals Plastics Ceramics Composites Nonferrous Ferrous Oxides Nitrides Carbides Reinforced plastic Metal-matrix eramic atrix Steels Stainless steels Tool and die steels Aluminum Copper Titanium Tungsten Glasses Graphite Diamond Ceramic-matrix Laminates Thermoplastics Thermosets Cast Irons g Elastomers Acrylics ABS Nylons Polyethylene PVC Epoxies Phenolics Polymides Rubbers Silicones Polyurethanes MEGR 2180 eramics Ceramics eramos meaning Keramos meaning clay wo major categories Two major categories Aesthetic uses (pottery, ornamental objects) Industrial uses Properties Microcrystalline Covalent bonds MEGR 2180 ERAMIC TYPES CERAMIC TYPES Oxide ceramics Alumina aluminum oxide Al 2 O 3 arbides Alumina parts Carbide inserts Carbides Tungsten carbide Silicon carbide Tungsten carbide spheres Nitrides Cubic boron nitride (CBN) Titanium nitride lass Glass Graphite/Diamond CBN Inserts Nitride parts MEGR 2180 ECHANICAL PROPERTIES MECHANICAL PROPERTIES CERAMICS Brittle Hardness and strength t elevated temperatures too At elevated temperatures too High modulus Low toughness Low Thermal expansion hermal conductivity Thermal conductivity Electrical conductivity MEGR 2180 PHYSICAL PROPERTIES Relatively low density hermal fatigue Dielectric strength-the maximum electric field trength that it can Thermal fatigue Thermal cracking Low diffusivity strength that it can withstand intrinsically without breaking down, e itho t Anisotropy i.e. , without experiencing failure of its insulating properties Magnetic iezoelectric Piezoelectric MEGR 2180 MEGR 2180 ngineering Ceramics Engineering Ceramics Ceramics as Engineering Materials Concrete Brick Glasses orcelanic insulators (ex spark plugs) Porcelanic insulators (ex spark plugs) Piezoelectric Manufacturing Engineering uses inings in furnaces Linings in furnaces Primary manufacture of metals Sands in castings utting tool materials Cutting tool materials Seal components MEGR 2180 GLASS Amorphous Formed from fused Silica (SiO 2 ) sand in an arc rnace and cooled rapidly furnace and cooled rapidly Has no distinct melting or freezing point Working point Types of Glass Soda-lime Lead-alkali Borosilicate (Pyrex) Silica roperties Borosilicate Vials Properties Low strength except as fibers Low thermal conductivity igh resistively and dielectric optical properties High resistively and dielectric optical properties MEGR 2180 ypes of Glass Types of Glass Soda lime Borsilicate (Pyrex) Fused Silica...
View Full Document

Page1 / 22

ceramics - MEGR 2180 eramics Ceramics MEGR 2180 Engineering...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online