Definition of ‘Melting Point’

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Presentation transcript:

Definition of ‘Melting Point’ Important property in Mechanical engineering Solid & Liquid coexistence Changing of State point

Property Menling point is determined by Intermolecules Forces High Interforce High Melting point Low Interforce Low Melting point T = ΔH / ΔS T : Melting point ΔH : Enthalpy ΔS : Entropy (°C) 3422˚C 2700˚C 1668˚C 1535˚C 660˚C 328˚C

Application Using Low melting point Using High melting point Soldering Turbine Tin + Lead Titanium Fuse Furnace Tin + Lead Tungsten, zirconia

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