INVESTIGATION TO ESTABLISH HOW IMPURITY ATOMS AFFECT CRYSTAL NUCLEATION
Abstract
The theory of preferential etching at dislocations has been presented by Cabrera (Phil. Trans. Roy. Soc. London. Ser. A. 243:299, 1951). In Part I of this report the theory is reviewed and compared to empirical observations on the dissolution of lithium fluoride. The observed dissolution behavior is consistent with Cabrera's theory as modified by the effect of dissolution poisons. The presence of a few parts per million of step poisons strongly alters both crystal growth and dissolution rates. It was known that a few parts per million ferric fluoride was a poison for the dissolution of lithium fluoride. In Part II of this report it is shown that ferric fluoride is also a growth poison for lithium fluoride from aqueous solution. Ferric fluoride has the properties characterizing a step poison for the lithium fluoride-water system. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1961
- Accession Number
- AD0255093
Entities
People
- G.w. Sears
Organizations
- General Electric