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

Digit, Design the counters for the digital clock Minimum 100 words accepted...

Design the counters for the digital clock Minimum 100 words accepted#

Water, Ask Hardness of bore well water is less than sea water - justify

Ask Hardness of bore well water is less than sea water - justify

Thermodynamics, A methane-fired microturbine based on the regenerative gas ...

A methane-fired microturbine based on the regenerative gas turbine cycle employs a centrifugal compressor with a polytropic efficiency of 85%, a radial inflow turbine with a polyt

Common faults - fire safety management, Common faults - Fire safety managem...

Common faults - Fire safety management: Common faults found are: Combustible items left in protected routes Locked exits Fire doors wedged open Exits obstru

Visualizing data matlab, expertsmind.com has Visualizing Data solution in ...

expertsmind.com has Visualizing Data solution in matlab All the design features that are required to picture technological innovation and clinical information are available in

Flight control - state feedback, If all states are measured by appropriate ...

If all states are measured by appropriate sensors and interfaced to the flight control computer then allthe states may be fed back and there is no restriction on the choice of K. S

Equivalent shaft horsepower - aircraft maintenance , Equivalent Shaft Horse...

Equivalent Shaft Horsepower (EHP) In practice there is always a certain amount of jet thrust in the total output of the turbo-propeller engine and this must be added to the s.h

Cash Conversion Cycle, The need for working capital to run the day-to-day b...

The need for working capital to run the day-to-day business activities cannot be overemphasized. We will hardly find a business firm which does not require any amount of working ca

Effect of precipitate particles in strengthening, Q. Discuss the role of pr...

Q. Discuss the role of precipitate particles, strengthening crystalline materials against yield as low as well as high temperature of deformation. Ans. Effect of precipitate p

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