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The process of transition of metal atoms from a
liquid state in motion to a
solid state in which atoms are arranged in
an orderly manner is called
the
crystallization process .
In 1878, the Russian scientist DKChernov was
the first in the world to
discover the law of crystallization of metals. According to him, the crystallization
process of metals consists of two elementary processes:
1. Formation of crystallization centers;
2. Growth of crystals around the formed centers.
The size of the formed crystals depends on the
number of crystallization
centers
(MS)
and the crystal growth rate
(KT) .
It should be said that various oxides
and non-metallic particles that are not dissolved in metals
also play the role of
crystallization centers.
WORK PROCEDURE
Acquiring theoretical knowledge about the internal
structure of metals and
crystal lattices and analyzing the crystal bonds of the materials used.
3 – Laboratory work
REPORT
Topic: Internal structure of
metals and crystal lattices
1. Purpose of work.
2. Necessary equipment and measuring instruments.
3 . Summary of the work done.
Questions.
1.
State and explain the types of
crystal lattice
2.
What is called crystallization.
