An investigation of the nucleation and growth of crystals from undercooled metal melts

Powell, Graham Leonard Fraser. (1967). An investigation of the nucleation and growth of crystals from undercooled metal melts PhD Thesis, School of Engineering, The University of Queensland.

       
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Author Powell, Graham Leonard Fraser.
Thesis Title An investigation of the nucleation and growth of crystals from undercooled metal melts
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 1967
Thesis type PhD Thesis
Total pages 108
Language eng
Subjects 260101 Mineralogy and Crystallography
091207 Metals and Alloy Materials
291300 Metallurgy
Formatted abstract Large bulk samples ( >150 g) of silver, silver-oxygen ( =0.12 wt.56), copper, copper-oxygen ( = O.O8 wt.%), gold, antimony and germanium have been undercooled approximately O.18 T where T is the melting point in degrees absolute. This large degree of undercooling has been achieved by melting in a slag of commercial soda-lime glass. The heterogeneous impurities which normally catalyse nucleation at small degrees of undercooling ( < 10 deg. C) are considered to have been removed by solution in the glass slag.

The grain structures of silver, silver-oxygen, copper and copper-oxygen alloys have been investigated and it is concluded that the change in grain size which occurs in silver and copper as a function of both undercooling and oxygen content results from recrystallisation.


Document type: Thesis
Collection: UQ Theses (RHD) - UQ staff and students only
 
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Created: Fri, 03 Sep 2010, 09:53:45 EST by Ms Natalie Hull on behalf of Social Sciences and Humanities Library Service