On the surface mechanism of crystal melting

✍ Scribed by Dr. A. D. Vlasov

• Publisher: John Wiley and Sons
• Year: 1987
• Tongue: English
• Weight: 425 KB
• Volume: 22
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.2170221013

✦ Synopsis

Committee for Standards of the USSR, Moscow

On the Surface Mechanism of CrystaI MeIting

A crystal melting mechanism is proposed. The melting is caused by enhanced thermal expansion of the lattice on the surface and around structure defects. For the microcrystallites formed this way an approximate calculatian of parameters is made. The microcrystallites surface area per mole is shown t o be thousands of m2, the radius within 1.5 to 10 nm, the gaps between microcrystallitesby 30 percent more than the lattice interatomic distance. The mean thermal linear expansion coefficients determined on the crystal surface are roughly ten times as much as the bulk values.