Investigation of isothermal sections at 1000 and 600°C in the Pt–Cr–Ru system

Süss, R.; Cornish, L.A.; Witcomb, M. J.

doi:10.1016/j.jallcom.2007.03.063

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Early experimental studies suggested that a thermodynamic database for the development of Pt-alloys for high-temperature applications should be based on Pt-Al-Cr-Ru [7,13]. Experimental studies of the four ternary systems have been undertaken by [14][15][16][17] (Al-Cr-Ru), [18][19][20] (Pt-Cr-Ru), [21,22] (Pt-Al-Ru), and [23][24][25] (Pt-Al-Cr). Studies of as-cast alloys were performed in order to determine the solidification reactions and liquidus surface projections.…”

Section: Introductionmentioning

confidence: 99%

Development of a database for the prediction of phases in Pt–Al–Cr–Ru alloys for high-temperature and corrosive environments: Al–Cr–Ru

Süss¹,

Watson²,

Cornish³

et al. 2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Development of a database for the prediction of phases in Pt–Al–Cr–Ru alloys for high-temperature and corrosive environments: Al–Cr–Ru

Süss¹,

Watson²,

Cornish³

et al. 2009

Journal of Alloys and Compounds

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“…The high hardness of some of the Pt-Al-Cr alloys was attributed to ~PtAl 2 , ~PtAl, and ~Pt 2 Al 3 . The Pt-Cr-Ru system (Süss, 2004) exhibited hardnesses between 225±13 for (Pt) and 1013±68 for an alloy with A15 Cr 3 Pt. The latter sample showed cracking around the indentations, which is detrimental -however, this was not seen in the current alloys.…”

Section: Discussionmentioning

confidence: 99%

High-order additions to platinum-based alloys for high-temperature applications

Odera¹,

Papot²,

Couperthwaite³

et al. 2015

J. S. Afr. Inst. Min. Metall.

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Platinum-based alloys are being developed with microstructures similar to nickel-based superalloys for potential high-temperature applications in aggressive environments. Since the chemistries of nickel and platinum are similar, Pt-based alloys can be made with gamma prime ~Pt 3 Al precipitates in a gamma (Pt) matrix. Currently, the Pt-Al-Cr-Ru system is one of the bases for developing Pt-based alloys, where Al allows the formation of the Pt 3 Al precipitate and also gives protection from the alumina scale formed, Cr provides oxidation resistance and stabilization for the L1 2 ~Pt 3 Al phase, and Ru provides solid solution strengthening in the (Pt) matrix.Four Pt-Al-Cr-Ru-V and two Pt-Al-Cr-Ru-V-Nb alloys were made, with compositions based on a quaternary alloy, ~Pt 82 :Al 12 :Cr 4 :Ru 2 , which had previously been identified as having optimum properties. Four of the ascast alloys had the targeted two-phase structure of ~Pt 3 Al and (Pt), and two were single-phase ~Pt 3 Al. Vanadium partitioned more to (Pt) than to ~Pt 3 Al. There was an improvement in hardness compared to the quaternary alloys. The best addition of V was ~15 at.%; higher additions resulted in brittle intermetallic phases of the Pt-V system. The effect of Nb could not be ascertained because of its high losses.

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“…The information required to undertake the computer assessments was either gleaned from literature, or when not available, undertaken within the project. Experimental studies of the four ternary systems have been undertaken on Al-Cr-Ru [5][6][7][8], Pt-Cr-Ru [9][10][11] and Pt-Al-Ru [12,13]. This paper summarises results obtained from experimental work on as-cast Pt-Al-Cr alloys.…”

Section: Introductionmentioning

confidence: 99%