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Flux fusions are widely employed on a routine basis for the preparation of samples for X-ray fluorescence and other instrumental and classical analysis techniques.


Several types of automatic equipment are available for this work and specially designed crucibles and molds /nare produced for use with this equipment.Crucibles and molds for /nautomatic equipment such as Claisse, Perl X2, LECO, Herzog and other forms are also available. Normally, /nnon-wetting Pt 5% Au alloy is used for this work, although any alloy or material may be specified.


Platinum 5% gold was designed especially for non-wetting applications. It combines the workability and non-wetting /nproperties of ordinary platinum 5% gold with the hot strength of rhodium platinum alloys, yet is easier to /nfabricate and offers better stability. Its resistance to contamination makes it ideal for use in X-ray fluorescence /nsample preparation.


Platinum 5% gold is dispersion strengthened to give it up to twice the working life of ordinary non-wetting gold-platinum /nlabware. Its grain structure is stabilized by the introduction of very fine zirconia particles dispersed /nevenly throughout the platinum-gold matrix in minute quantities. The nobility of the alloy is fully maintained at /nthis trace particle level.


Dispersion strengthening properties are maintained up to 90% of the true melting point of the alloy, /napproximately 2705°F. The strengthening process also helps prevent the gold from leaching out, which assures /nthat the labware will keep its non-stick characteristics throughout its longer life.



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Metals & Materials


Analytical & Labware