Practical Electron Microscopy and Database

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

Relationship between Bond Energy and Melting Point

The melting point of a material is one of the characteristics of its bond strength (bond energy). In many cases, higher bond energy reflects higher melting point. Table1821 lists the relationship between bond energies and melting points of some materials. Table 1821. Relationship between bond energy and melting point. Material Bond energy (eV/bond) Melting point (°C) Ionic CaCl 6.747 646 NaCl 7.96 801 LiF 10.45 870 CuF2 26.85 1360 Al2O3 157.46 3500 Covalent Ge 3.26 958 GaAs 3.26 1238 Si 3.66 1420 SiC 12.31 2600 Diamond 7.4 3550 Metallic Na 1.13 98 Al 3.22 660 Cu 3.52 1083 Fe 4.22 1535 W 8.75 3370 Van der Waals Ne 0.0259 -248.7 Hydrogen bonding H2 0 0.518 0