Ceramics, Mechanical Engineering

Assignment Help:

Ceramics

Ceramics are mostly inorganic crystalline materials characterized by high melting point and low ductility. Such materials are processed via methods other than melting.

Ceramics consist of nonmetallic and metallic elements that are bonded together with ionic and or covalent bonds. They are usually produced via powder compacting and sintering at high temperatures.

General ceramic materials are hard and brittle along with very little ductility and toughness. Their inability to deform plastically is mainly because of directional ionic and or covalent bonds that leave no free electrons. Because of several reasons the ceramics are bad conductors of heat and electricity. Their engineering application makes employ of electrical and thermal insulating properties. The stability of inherent chemical and strong bonding also make ceramic quite able of surviving in hostile environment. High temperature application is individual situation.

Clay, silica as flint and feldspar form the basic ingredients of traditional ceramics. Major constituents of clay are hydrated aluminium silicate as Al2O3, SiO2, H2O. Minute amounts of other oxides as like: those of Ti, Mg, Fe, Ca, Na and K are present also. Whilst SiO2 provides stability against high temperature feldspar, as K2O, Al2O3, 6SiO2 generates glass bond among of refractory components. Traditional ceramics are usually utilized in form of tiles and bricks for construction or like electrical porcelain for electrical insulators. In its latter form this material is highly standardized for large variations and electrical industry are available. Still another class of ceramics called as engineering ceramics typically are made up of pure compounds like aluminium oxide or Al2O3, silicon carbide or SiC and silicon nitride or Si3N4. These engineering ceramics are utilized for high temperature applications.

 


Related Discussions:- Ceramics

Natural frequency-degree of freedom-conservative system , Natural Frequency...

Natural Frequency: This is the frequency of vibration of a system that is undamped and without external excitation while it is disturbed. Forced Vibration: This is the vibra

Define leakage flux. , Leakage flux : The flux that links the ...

Leakage flux : The flux that links the coil only partially passes through the core does not link the coil as the moving or rotating device is called leakage flux.

Plate clutch pressure-clutch slipping, Plate clutch pressure:  Check plate...

Plate clutch pressure:  Check plate clutch pressure for any step using a straight edge.

Angular dimensions-autocad, Angular Dimensions There is only one comman...

Angular Dimensions There is only one command in this section and it is used to annotate angular measurements. The Angular Dimension Command The Angular command is amazi

Explain frequency reuse, Explain frequency reuse In the cellular conce...

Explain frequency reuse In the cellular concept, service area is separated into regions called cells and the available frequency is divided among these cells. Every cellular b

Evaluate the motion of system, Evaluate the motion of system: Q : Blo...

Evaluate the motion of system: Q : Block A and B are connected by a rigid horizontally bar planed at each end are placed on the inclined planes as shown in the figure giv

Cylinder head-basic components of engine , Cylinder Head: It is fitted at...

Cylinder Head: It is fitted at top of the cylinder block. It provides space for the arrangement of spark plug, combustion chamber, camshaft, cam chain, valves and intake and exha

Annotation with leaders, Annotation with Leaders Ordinate dimensions ar...

Annotation with Leaders Ordinate dimensions are not really an dimensions at all in that they do not indicate a measurement.They annotate known as a co-ordinate points. The DIMO

Stress analysis requirements, Q. Stress analysis requirements? All othe...

Q. Stress analysis requirements? All other lines requiring review by the stress group are to be checked for adequate support, stability, excessive movement, etc. Where hand ca

Estimate what fraction of heat loss by the fin, A tube assembly constructed...

A tube assembly constructed of Cu with an inside diameter of 1.25 cm, wall thickness of 0.8 mm and circumferential fins around the periphery. The fins have thickness of 3 mm, and a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd