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DEVITRIFICATION IN GLASS-FORMING AQUEOUS SOLUTIONS.

Author(s) : MACFARLANE D. R.

Type of article: Article

Summary

IN AQUEOUS-SOLUTION GLASSES THE DEVITRIFICATION PROCESS HAS BEEN FOUND TO CONSIST MAINLY OF THE NUCLEATION AND GROWTH OF A LARGE NUMBER OF ICE PARTICLES AND IS OFTEN MOST RAPID AT COMPOSITIONS NEAR THE WATER-RICH EDGE OF THE GLASS-FORMING REGION OF CONCENTRATIONS. THIS IS ALSO THE MAIN REGIONS OF INTEREST IN THE CRYOBIOLOGICAL APPLICATION OF THESE GLASS-FORMING SOLUTIONS. THE EXPERIMENTAL AND THEORETICAL KNOWLEDGE OF THE DEVITRIFICATION PROCESS IN AQUEOUS AND OTHER GLASS-FORMING SYSTEMS HAS BEEN REVIEWED. IN PRINCIPLE DEVITRIFICATION CAN BE SUBSTANTIALLY AVOIDED BY SUFFICIENTLY RAPID HEATING. RATES (HIGHER THAN 100 K/MIN) ARE INACCESSIBLE TO CURRENT EXPERIMENTAL OBSERVATION BUT MAY BE USEFUL IN THE CRYOBIOLOGICAL APPLICATION.

Details

  • Original title: DEVITRIFICATION IN GLASS-FORMING AQUEOUS SOLUTIONS.
  • Record ID : 1987-0759
  • Languages: English
  • Source: Cryobiology - vol. 23 - n. 3
  • Publication date: 1986

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