Comparison of the Creep and Fracture Behavior of Non-Hardened and Oxide Dispersion Hardened Platinum Base Alloys at Temperatures between 1200 °C and 1700 °C

Völkl, Rainer; Freund, D.; Fischer, Bernd; Gohlke, Daniel J.

doi:10.4028/www.scientific.net/kem.171-174.77

Cited by 6 publications

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“…As Figures 9 and 10 They are considerably higher than values determined on other dispersion strengthened materials [15,16] . Figure 11 shows, for example, double logarithmic Norton plots of the stationary creep rates of Pt DPH and Pt-10 %Rh DPH at test temperatures between 1200 and 1600 C in comparison with the conventional materials pure platinum and Pt-10 %Rh.…”

Section: High Temperature Mechanical Properties Of the New Pt Dph Matmentioning

confidence: 80%

“…Comparative stress rupture tests were carried out on Pt-10 %Rh DPH and on three oxide dispersion strengthened Pt-10 %Rh materials (ODS 1 , ODS 2 , ODS 3 ) from different manufacturers in various material conditions [16]. Figure 15 shows, for example, the stress rupture strength for 1000 h test time and Figure 16 shows creep curves at 1450 C in the initial state.…”

Section: Comparison Of the High Temperature Mechanical Properties Of mentioning

confidence: 99%

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New Platinum Materials for High Temperature Applications

Fischer¹

2001

Adv Eng Mater

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When platinum materials are used for structural components in the high‐temperature range, for example in the glass industry and in space technology, extremely high thermal, mechanical and chemical loadings arise. Apart from the solid solution hardened alloys, dispersion strengthened platinum materials have also been well‐known for a long time. However, these dispersion strengthened platinum materials show considerable problems during the manufacturing process. Especially after welding of components, crack formation is caused by the very poor ductility during the high‐temperature use. This paper reports on a new class of dispersion hardened platinum materials (Pt DPH materials). These materials, manufactured by Heraeus, have been the subject of a detailed programme of laboratory investigations and industrial tests. By means of the development of these materials, it is now possible to avoid the disadvantages mentioned above. After a short introduction describing the manufacture and structure of the new DPH materials the report gives comprehensive results on the examination of their improved high‐temperature mechanical properties. The results of stress‐rupture tests and tensile tests verify that the novel DPH materials display high temperature strength, low creep rate and simultaneously very good ductility. The Pt DPH materials also show excellent properties even after welding, under cyclically changing temperatures, with notches and after corrosion exposure in aggressive glass melts. Finally, test results from the use of these novel Pt DPH materials in analytical laboratories and in the glass industry are given.

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Section: High Temperature Mechanical Properties Of the New Pt Dph Matmentioning

confidence: 80%

Section: Comparison Of the High Temperature Mechanical Properties Of mentioning

confidence: 99%

New Platinum Materials for High Temperature Applications

Fischer¹

2001

Adv Eng Mater

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“…However, grain coarsening in these solid solution strengthened alloys deteriorates the mechanical properties, promoting premature failure of components. To compensate, oxide dispersion strengthened (ODS) Pt-based alloys, with small amounts of finely distributed zirconium or yttrium oxides in the Pt matrix, were developed to improve the high temperature properties (Völkl et al, 1999). The reduction of dislocation mobility and grain boundary stabilisation by the stable oxide dispersoids increased the stress-rupture strength to ~1600°C.…”

Section: Introductionmentioning

confidence: 99%

Advances in Gas Turbine Technology

Kyprianidis¹

2011

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Solid-solution hardening of Ir by Pt and Ni

Yamabe‐Mitarai

Aoki

2002

Materials Letters

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Comparison of the Creep and Fracture Behavior of Non-Hardened and Oxide Dispersion Hardened Platinum Base Alloys at Temperatures between 1200 °C and 1700 °C

Cited by 6 publications

References 0 publications

New Platinum Materials for High Temperature Applications

New Platinum Materials for High Temperature Applications

Advances in Gas Turbine Technology

Solid-solution hardening of Ir by Pt and Ni

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