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Open Access The Platinum Development Initiative: Platinum-Based Alloys for High Temperature and Special Applications: Part III

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Under the Platinum Development Initiative, platinum-based alloys were being developed for high-temperature and special applications for good corrosion and oxidation resistance. Work on ternary alloys had previously identified that the best of these systems for both mechanical properties and oxidation resistance were Pt86:Al10:Cr4 and Pt86:Al10:Ru4 (1), although the maximum precipitate volume fraction was only ∼ 40% as opposed to ∼ 70% achieved in nickel-based super alloys. Since Pt86:Al10:Cr4 and Pt86:Al10:Ru4 gave the best results, a range of quaternary alloys were also made, using these compositions as a basis. The optimum composition was found to be around Pt80:Al14:Cr3:Ru3. Subsequently, further additions were made to the quaternary alloys to change selected properties.

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Document Type: Research Article

Publication date: July 1, 2009

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