false

Study Guides
(248,410)

Canada
(121,516)

McMaster University
(7,412)

MATLS 1M03
(21)

Hatem Zurob
(4)

Final

Unlock Document

Materials Science and Engineering

MATLS 1M03

Hatem Zurob

Winter

Description

Chapter 2: Atomic Structure and Interatomic Bonding
– Magnitude of force is a function of interatomic
distance
– The bond‐length corresponds to the distance
at which the attractive and repulsive forces
exactly balance.
– Minimum energy is
called the bond energy. (Energy that is
required to completely separate two
atoms)
- High bonding energy = High melting Temperature
- When one element loses electrons and the
other gains electrons. The resulting ions attract
and form a strong bond. Ionic Bond
- Stable electron configuration is achieved Polymorphic: has more than one crystal structure
by sharing/overlap of outer orbitals. Covalent Bd Miller Direction Indices:-
- Metallic Bond = metals bonding 1. Start at any cell corner.
2. Find coordinates of vector in units of a,b, c.
-Secondary Bonding = weak bd 3. Multiply or divide all the coordinates by a common factor.
Aka van der Waals bond
– To reduce all the coordinates to the smallest possible integer values.
4. Represent as [ u v w]
– no commas
5. Represent negative directions as ū.
Miller Plane Indices:-
– Choose a starting point so that the plane does not pass
through the origin.
– Find the intercepts in units of x, y, z, planes parallel to an axis
have an intercept at infinity.
– Find the reciprocals of the intercepts: 1/x, 1/y, 1/z.
– Multiply or divide by common factor to get the smallest
possible integer values.
– Represent the index as(h k l) – no commas.
Example for famalies of direction etc:
Which of the following planes contains all of the following directions [010],
[111]and [101]:
(a) (010)
(b) (111)
(c)(101)
(d) (101)
Solution: Take each choice and do DOT PRODUCT with the directions in the
question and see which option give you a DOT PRODUCT of 0.

More
Less
Related notes for MATLS 1M03

Join OneClass

Access over 10 million pages of study

documents for 1.3 million courses.

Sign up

Join to view

Continue

Continue
OR

By registering, I agree to the
Terms
and
Privacy Policies

Already have an account?
Log in

Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.