Material Properties Possible Applications Range [° C] Pt 1769 High Thermal and Chemical Laboratory Apparatus Such As Stability

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Material Properties Possible Applications Range [° C] Pt 1769 High Thermal and Chemical Laboratory Apparatus Such As Stability

Melting Material point or Material properties Possible applications range [° C] Pt 1769 High thermal and chemical Laboratory apparatus such as stability. Platinum in various crucibles and dishes which are purities. only exposed to low mechanical stresses. Pt-DPH 1769 The finely dispersed oxide Laboratory equipment and particles in platinum and platinum structural components which are PtAu 95/5-DPH 1675 - 1745 alloys significantly increase the subject to high mechanical mechanical strength and stresses at high temperatures. PtRh 90/10-DPH 1840 - 1870 corrosion resistance. PtIr 97/3 1772 - 1773 The mechanical strength, thermal Laboratory apparatus or structural and corrosion resistance become components which are exposed PtIr 90/10 1780 - 1800 greater with increasing iridium to severe mechanical, thermal content. Platinum Iridium alloys and corrosive effects. PtIr 80/20 1830 - 1855 suffer from increased weight loss in oxidizing atmosphere. PtRh 90/10 1840 - 1870 The mechanical strength, thermal Heavy duty laboratory equipment, and corrosion resistance become electrodes, glass fibre bushings PtRh 80/20 1870 - 1910 greater with increasing rhodium and lining materials for content. An advantage of the components to contain molten platinum-rhodium alloys is that glass. only a minimal weight loss occurs even in oxidizing atmosphere. Platilab 11 Small quantities of platinum group Laboratory apparatures or metals have been added to high structural components which are purity platinum, in order to obtain exposed to severe mechanical, a finer crystal structure for better thermal and corrosive effects. chemical and mechanical characteristics. PtAu 95/5 1675 - 1745 The gold content reduces the These properties predestine PtAu wetting by glass melts so that the 95/5 as the material for apparatus glass can be easily removed after for the preparation of samples for solidification without leaving any X-ray fluorescence analysis residues. The mechanical (XRF). strength is also increased and the tendency to recrystallization reduced. Seite 2 AuPt 90/10 1120 - 1180 This gold alloy shows increased Dishes, e.g. for flour ignition, mechanical strength compared sugar ignition, etc. with pure gold and good resistance to phosphorus. Platinum based alloys are more susceptible to corrosion by phosphorus. Ag 961 Good conductivity, chemical Crucibles for reagents which stability (in particular, resistant to corrode platinum alloys; contact Au 1063 phosphorus). materials. Ir 2447 Iridium is the preferred material Crucibles for crystal growing. for oxide melts because of its Components which are subject to good corrosion resistance and severe thermal conditions. high temperature stability in inert atmospheres. The alloys listed in the table above represent only a small selection of the alloys produced by Heraeus. We are pleased to help you with your inquiries or special requirements. .

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Package 'Ciaawconsensus'
Package ‘CIAAWconsensus’ September 19, 2018 Type Package Title Isotope Ratio Meta-Analysis Version 1.3 Author Juris Meija and Antonio Possolo Maintainer Juris Meija <[email protected]> Description Calculation of consensus values for atomic weights, isotope amount ratios, and iso- topic abundances with the associated uncertainties using multivariate meta-regression ap- proach for consensus building. License Unlimited LazyData yes Imports mvtnorm, stringr, numDeriv, stats, Matrix NeedsCompilation no Repository CRAN Date/Publication 2018-09-19 13:30:12 UTC R topics documented: abundances2ratios . .2 at.weight . .3 ciaaw.mass.2003 . .4 ciaaw.mass.2012 . .5 ciaaw.mass.2016 . .6 iridium.data . .6 mmm ............................................7 normalize.ratios . .8 platinum.data . .9 Index 10 1 2 abundances2ratios abundances2ratios Isotope ratios of a chemical element from isotopic abundances Description This function calculates the isotope ratios of a chemical element from the given isotopic abundances and their uncertainties. The uncertainty evaluation is done using the propagation of uncertainty and the missing correlations between the isotopic abundances are reconstructed using Monte Carlo methods. Usage abundances2ratios(x, ux, ref=1, iterations=1e4) Arguments x A vector of isotopic abundances of an element ux Standard uncertainties of x ref Index to specify the desired reference isotope for isotope amount ratios iterations Number of iterations for isotopic abundance correlation mapping Details Situations are often encountered where isotopic abundances are reported but not the isotope ratios. In such cases we reconstruct the isotope ratios that are consistent with the abundances and their uncertainties. Given only the abundances and their uncertainties, for elements with four or more isotopes one cannot unambiguously infer the uncertainties of the ratios due to the unknown correla- tions between isotopic abundances.
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The Radiochemistry of Iridium-- +- -:, G
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