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PHYSICAL ASPECTS OF VITRIFICATION IN AQUEOUS SOLUTIONS.

Author(s) : MACFARLANE D. R.

Type of article: Article

Summary

VITRIFICATION IS THE PROCESS BY WHICH A LIQUID SOLIDIFIES AT TEMPERATURES USUALLY FAR BELOW THE NORMAL FREEZING POINT, BUT WITHOUT THE FORMATION OF ANY CRYSTALLINE PHASE. OCCASIONALLY, WHEN THE LIQUID CONSISTS OF ASOLUTION, ONE OF THE COMPONENTS FREEZES TO FORM A CRYSTALLINE PHASE DURING COOLING, BUT THE REMAINDER OF THE SOLUTION VITRIFIES. THE PRODUCT IS THEN A PARTIALLY CRYSTALLIZED GLASS. THE AUTHOR FOCUSES ON THE GENERAL PRINCIPLES INVOLVED INGLASS FORMATION AND DISCUSSES IN DETAIL THE EFFECT OF PRESSURE ON THE NUCLEATION AND VITRIFICATION OF THE SOLUTION. IN PARTICULAR HE LOOKS AT THE PHYSICAL PROCESSES INVOLVED AS WELL AS THE CHEMICAL ASPECTS OF THE SOLUTES. RECENT WORK CONCERNING THE NATURE OF THE DEVITRIFICATION (CRYSTALLIZATION DURING WARMING) EVENT AT HIGH PRESSURES IS DETAILED.

Details

  • Original title: PHYSICAL ASPECTS OF VITRIFICATION IN AQUEOUS SOLUTIONS.
  • Record ID : 1989-0331
  • Languages: English
  • Source: Cryobiology - vol. 24 - n. 3
  • Publication date: 1987

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