Join now for JEE/NEET and also prepare for Boards Join now for JEE/NEET and also prepare for Boards. Register Now
Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
Write short note on surface defect ( 2-dimensional imperfection) Write short note on surface defect ( 2-dimensional imperfection)
Surface Defects1.External Surface: Surface atoms have unsatisfied atomic bonds, and higher surface energies, than the bulk atoms. To reduce surface free energy, material tends to minimize its surface areas against the surface tension (e.g. liquid drop).2.Grain boundaries:regions between two adjacent grains slightly disordered low density in grain boundaries high mobility high diffusivity3.Tilt Boundary: A Tilt Boundary, between two slightlymis-aligned grains appears as an array of edgedislocations. Rotation axis is parallel to the boundary plane4. Twist Boundary: Rotation axis is perpendicular to the boundary plane Low angle grain boundaries, that appear as an array of Screw dislocations.5.Twin boundaries: These are the boundaries in the grains at which the atomic arrangement on one side of the boundary is the mirror image of the atoms on the other side . May be produced by shear deformation. The region between the pair of boundaries is called the twinned region.6.Stacking Faults: Formed by fault in the stacking sequence of atomic planes in crystals.Considering stacking arrangement in FCC: This thin region is a surface imperfection and is called Stacking faults.
Dear student Please refer teh link below https://www.askiitians.com/iit-jee-Solid-State/imperfection-in-solids/Good Luck
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -