Homepage Forums Lawrenceville Plasma Physics Experiment (LPPX) Oxide Removal – Microwave 'Turntable' vs Chaos/Randomization

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  • #1728
    AvatarAnonymous
    Inactive

    In a recent LPP progress report, they were mentioning the use of microwaves as a simple way to remove oxides, but said this might result in uneven oxide removal, since there is no way to include a microwave oven turntable.

    Don’t a lot of newer microwave ovens have some sort of “Chaos” feature that randomizes the microwaves to even everything out?

    http://www.independent.co.uk/news/science/chaos-theory-serves-up-solution-to-speedy-defrosting-in-microwaves-102308.html

    http://eng.faq.panasonic.com/app/answers/detail/a_id/10689/~/what-is-chaos-defrost?

    It’s supposed to compensate for the lack of a turntable.

    Why not try something like that?

    #26115
    AvatarEngineer
    Participant

    Oxide removal with microwaves should be part of “bake out”. Unfortunately, the mode shapes can be changed via a mixer, but not infinitely. If possible, a side loop of glass tubing to the vacuum pump could be coated with a ‘getter’ metal via induction evaporation, following draw down. Any oxygen released during bake or firing may be absorbed.

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