TABLE OF CONTENTS
Title Page – – – – – – – – i
Certification – – – – – – – – ii
Dedication – – – – – – – – – iii
Acknowledgements – – – – – – – iv
Table of Contents – – – – – – – – v
CHAPTER ONE
1.0 Introduction – – – – – – – – 1
1.1 Aim and Objective of the Study – – – – – 2
1.2 Scope and Limitation of the Study – – – – 2
1.4 Definition of Terms – – – – – – 3
CHAPTER TWO
- Melting Point – – – – – – – 4
- Melting Point Effects – – – – – – 5
2.3 Physical State of Boiling and Melting Point – – – 7
2.4 Melting Point Depression/Melting Range – – – 8
2.5 Mixed Melting Point – – – – – – 9
2.6 Melting Point Range – – – – – – 10
CHAPTER THREE
3.1 Heat Transfer in Melting Points – – – – 18
3.2 Experimental Methods in Tribology – – – – 18
CHAPTER FOUR
4.0 Conclusion and Recommendations
4.1 Summary/Conclusion – – – – – – 20
4.2 Recommendations – – – – – – 20
CHAPTER ONE
INTRODUCTION
- Background of the Study
There are several material constants that can be used to describe a material for example, its specific gravity, light refraction, adsorption capacity, or chromatographic behaviour. The melting point is also one of these constants along with the boiling point and the solidification point.
It is one of the import thermal characteristics that describe a materials, this can be measured with greats accuracy. Crystalline materials consist of extremely fine particles that dorm a certain regular 3- dimensional structures. These 3 – dimensional arrangements are referred to as lattice structures or (crystalline) lattices. The particles within the lattice are held together by the lattice forces.
whenever this solid structure, the lattices is heated, the particles in it begin to move more strongly until finally the forces attraction between them are no longer strong enough to maintain the crystalline structure. At the melting point, a material shift from its ordered solid state, to an unordered, liquid state. The stronger the forces of attraction between the particles within the lattice, the greater the amount of energy that must be used to overcome them. The melting temperature of a crystalline solid is thus an indicator for the stability of its lattice. The higher the temperature, the more strong the lattice structure in question holds together.