Safe nitrogen compound to decompose a 500 deg C in a furnace?

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SUMMARY

The discussion focuses on finding a safe nitrogen compound suitable for a powder metallurgy project that can decompose at 500°C to liberate nitrogen for reaction with metal surfaces. Participants suggest melamine (C3H6N6) as a viable option, while also recommending magnesium nitride powder for its steady decomposition and nitrogen release. Concerns about toxic fumes from cyanide compounds, such as copper cyanide, are highlighted, emphasizing the need for non-hazardous alternatives. Zinc nitride is also mentioned as a potential candidate.

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  • Research the thermal decomposition properties of melamine (C3H6N6)
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Metallurgists, materials scientists, and chemical engineers involved in powder metallurgy and those seeking safe nitrogen compounds for high-temperature applications.

Andy Ward
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Hi all - looking for help as a metallurgist - not a chemist.

For a powder metallurgy project I need a simple, solid, powdery nitrogen compound I can mix with metallic, compacted powder and heat to 500 deg C. I need it to liberate nitrogen to react with the metal surfaces. I was looking at copper cyanide but will this liberate toxic fumes on breakdown? Was also looking at such things as urea but want hydrogen-free if I can get it or the hydrogen might dissolve in my aluminium powder.

Any suggestions based on C-N materials?

Many thanks for any response.

Andy
 
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All CN compounds seem to produce hazardous fumes when pyrolized so "safe" is not likely in this case. If you have your heart set on a CN compound, I think melamine is your most likely candidate. C3H6N6 (or CH2N2)

You might also use magnesium nitride powder. It decomposes steadily up to 500C releasing it's nitrogen. I would think the magnesium would alloy itself with the aluminum if that can be tolerated. Might try zinc nitride as well.