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The wetting behavior of NiAl and NiPtAl on polycrystalline alumina.

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  • معلومة اضافية
    • نبذة مختصرة :
      In order to understand the beneficial effect of Pt on the adherence of thermally grown alumina scales, sessile drop experiments were performed to study the wetting of poly-crystalline alumina by nickel–aluminum alloys with or without platinum addition ranging from 2.4 to 10 at%. Subsequent interfacial morphology was examined using atomic force microscopy. Platinum addition enhances the wettability of NiAl alloys on alumina, reduces the oxide/alloy interface energy and increases the interfacial mass transport rates. [ABSTRACT FROM AUTHOR]