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COMPARATIVE ANALYSIS OF HIGH TEMPERATURE STRENGTH OF PLATINUM AND PALLADIUM

Biserka Trumić

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s12.103View metrics

Abstract

Mining and Metallurgy Institute in Bor, Se rbia, has successfully dealt for many years with processing of precious metals. Platinum and palladium have originated from the raw materials of the Bor deposit. By furt her refining in the Institute, the mentioned platinum metals are transformed into high-pu rity metals of which products for various purposes are manufactured. This paper presents the results of comparativ e analysis the high temperature strength of platinum and palladium. The limit of tensile strength as well as the time strength at high temperatures was tested. The time dependence on fracture and tensile strength on temperature for platinum and palladium were determined. Also, the time to fracture and the creep rate in the temperature range 1200-1400 в—¦C at stress of 5MPa were determined. The characteristics of fracture the palladium sample are given after high temperature testing.

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Publication details

Title
COMPARATIVE ANALYSIS OF HIGH TEMPERATURE STRENGTH OF PLATINUM AND PALLADIUM
Authors
Biserka Trumić
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
Keywords
platinumpalladiumhigh temperature strength 1. I1TRODUCTIO1 Todayin the worldplatinum is irre placeable in the high temperature oxidation environmentswhere the presence of chemical erosion is unacceptable. The use of pure metal is limited due to a low strength and creep resistance at high temperatures. Alsothe high price of this metal limits its application. In the solid solutions of pla tinum with PdRhRuIr and Authe resistance as well as the strength at high temperatures are defined by the interatomic forces of link and structure which involves the microstructure (grain sizecharacter and composition of grain boundariessubgrain size and mode of their orientation)dislocation structure (movement and distribution of dislocations) and macrostructure (the presence of porescavities or other defects). In order to reduce and prevent the creep of platinum at high temperatures and stressesit is necessary to slow the diffusion mobility of the same. 11th International Multidisciplinary Scientific GeoConference SGEM2011 www.sgem.org International Multidisciplinary Scientific GeoConference SGEM 2011 696
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