Foils to be used for the purpose of encapsulation

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For heat treating samples at 600°C while preventing oxidation, quartz glass is considered but is too costly for numerous samples. The discussion seeks alternative encapsulation methods, particularly using foil made from specific elements or alloys that resist oxidation at high temperatures. Participants are encouraged to suggest both affordable and premium options for suitable foils. Incoloy, a metal alloy that withstands temperatures up to 1400°F, is mentioned as a potential candidate. The goal is to find effective and economical solutions for encapsulating the samples during heat treatment.
mah65
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HI

I want to heat treat my samples (dimensions: 4:4:2 mm3) at about 600 C, for different times from 30 min to 3 days. Since my alloy is highly sensitive to high temperature oxidation, I have to encapsulate them so as to prevent them from being oxidized.

I was thinking of encapsulating them in quartz glass. However, this method is very expensive, as I have too many samples.

One method is to roll the samples in some layers of foil of a specific element. Does anyone know an element, foils of which are resistant to oxidation at my temperatures and times? Please mention every element or alloy that works, whether cheap or expensive.

Thank You very much in advance
 
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Incoloy is a metal alloy rated to 1400 degF.
 
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