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

Homework, name the functions of the CIPM

name the functions of the CIPM

Computational aerodynamics-guided reading, It is recommended that if possib...

It is recommended that if possible you should buy a copy of this book. It will prove useful for the new fourth year configurational aerodynamics module also. Blackwells bookshop ha

Armature cipl, in which type of armature winding Equaliser ring dummy coils...

in which type of armature winding Equaliser ring dummy coils are used

Dual input unbalanced output differential amplifier ac analy, analysis of d...

analysis of dual input unbalanced output differential amplifier ac analysis?

Case analysis, Construct the pro forma cash flow statements for Bloomington...

Construct the pro forma cash flow statements for Bloomington Clinics for five years into the future using the data given in the case plus the most likely growth estimates. a. Wha

Oil supply failure - propeller, Oil supply failure - Propeller: To prev...

Oil supply failure - Propeller: To prevent an overspeed caused by an oil supply failure, one of two methods may be employed: • Hydraulic lock valve The pitch lock mecha

The impact and post-impact behaviour of composites , The Impact and Post-im...

The Impact and Post-impact Behaviour of Composites  Many early studies involved doing Charpy tests on small notched samples. This is a destructive test of impact resistance, co

Can you help in my assignment, can you help me in my assignment in Engineer...

can you help me in my assignment in Engineering project and operation management course??

Matlab coding, create 22 elements in scalar hint:for loop or any loop state...

create 22 elements in scalar hint:for loop or any loop statement and append to previous variable element by elements

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