Differentiate crystalline and amorphous materials, Other Engineering

Assignment Help:

Q. Differentiate crystalline and amorphous materials?

(a)Crystalline solids: Those solids in which the, ions atoms or molecules in a definite regular repeated three dimensional pattern are called solids. Thus the atoms or molecules in crystalline solid are arranged just as the sliders do on the parade ground.

 e.g.Calcite, rock-salt, quartz, sugar-mica, diamond etc.

(b)Amorphous solids: Those solids in which the constituent atoms or molecules are not arranged in a definite pattern, repeating in three dimensions are called amorphous solid or materials.

e.g.plastic, glass etc.


Crystalline materials

Amorphous materials

(a)  The constituent's ions or molecules in a given crystalline solid are arranged in a definite geometrical pattern.

The constituent's atoms or molecules in these solids are not arranged in a regular definite geometrical pattern.

(b)  These have a definite external geometrical shape.

These are not regular in their external shape.

(c)  These have a long range order of atoms or molecules.

These do not have a long range order of atoms or molecules.

(d)  All the bonds among molecules in these solids are equally strong. The crystalline solids have a sharp melting point.

Amorphous solid do not have a sharp melting point, because the weakest bond get reputed at lower temperature and stronger bonds get reputed at higher temperature.

(e) These are anisotropic i.e. the bond of crystalline solids have directional properties.

These solids sre isotropic as their physical properties are same in all direction.

In crystalline solids the angles between the flat surfaces of the crystal are constant.

These are super cooled  liquid of high viscosity.


Related Discussions:- Differentiate crystalline and amorphous materials

Turbine cooling - aircraft engine, Turbine cooling  Airflow: Figure ill...

Turbine cooling  Airflow: Figure illustrates the turbine cooling airflow of a typical gas turbine engine. The outward flow of cooling air is controlled by air seals of multi-g

Bajaj electronics company, how would you judge the potential profits of Baj...

how would you judge the potential profits of Bajaj electronics on the first year of sales to booth plastics and give your views to increase the profit?

Medical Optics, what are wavefronts and how are they useful in the field o...

what are wavefronts and how are they useful in the field of optics and medicine?

Static and dynamic balancing - propellers, STATIC & DYNAMIC BALANCING ...

STATIC & DYNAMIC BALANCING STATIC BALANCE When the weight distribution about the propeller axis is equal, with the propeller in any position, it is said to have static bal

Hydraulics.., A pump delivers 40 lpm to a 100 mm bore/25 mm rod cylinder to...

A pump delivers 40 lpm to a 100 mm bore/25 mm rod cylinder to move a load of 22 kN. A throttle is introduced on the rod end, and return flow with a 10 lpm flow rate. A 70 bar press

Multirate filters, obtain the polyphase structure H(Z)=1-3Z^-1/1+4Z^-1

obtain the polyphase structure H(Z)=1-3Z^-1/1+4Z^-1

Themodynamic, 1 kg of air is allowed to expand reversibly in a cylinder beh...

1 kg of air is allowed to expand reversibly in a cylinder behind a piston in such a way that the temperature remains constant at 260 degree while the volume is doubled.The piston i

#digital electronics, #Design 2:1 MUX with strobe input using NAND gates

#Design 2:1 MUX with strobe input using NAND gates

Naval architecture and marine engineering, i have a coursework for finite e...

i have a coursework for finite element analysis of marine structure and i need help to solve it

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