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1983•Collection of Czechoslovak Chemical CommunicationsRequires access

Induction period of nucleation and metastable zone width

Jaroslav Nývlt

Open publisher page 15 citations

Abstract

Induction periods of nucleation and metastable zone width were measured for the system KCl-H2O at 40 °C. The data for the induction period measured at constant undercooling produced at a finite rate were treated using relationships allowing for the time period of lower supersaturation. The relation NN = 1/tN has been found to apply to the system studied. The treatment of literature data for metastable zone width and induction period of nucleation in the systems KAl(SO4)2-H2O and (NH4)2Ni(SO4)2-H2O showed satisfactory agreement between values of nucleation exponent obtained by the two methods.

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What this paper is about

Induction periods of nucleation and metastable zone width were measured for the system KCl-H2O at 40 °C. The data for the induction period measured at constant undercooling produced at a finite rate were treated using relationships allowing for the time period of lower supersaturation. The relation NN = 1/tN has been found to apply to the system studied. The treatment of literature data for metastable zone width and induction period of nucleation in the systems KAl(SO4)2-H2O and (NH4)2Ni(SO4)2-H2O showed satisfactory agreement between values of nucleation exponent obtained by the two methods.

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Available abstract

Induction periods of nucleation and metastable zone width were measured for the system KCl-H2O at 40 °C. The data for the induction period measured at constant undercooling produced at a finite rate were treated using relationships allowing for the time period of lower supersaturation. The relation NN = 1/tN has been found to apply to the system studied. The treatment of literature data for metastable zone width and induction period of nucleation in the systems KAl(SO4)2-H2O and (NH4)2Ni(SO4)2-H2O showed satisfactory agreement between values of nucleation exponent obtained by the two methods.

Key concepts: Nucleation, Induction period, Metastability, Supersaturation, Supercooling, Period (music), Thermodynamics, Classical nucleation theory

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