I'm trying to sinter some Nb parts and I'm trying to find a binder which does not produce oxidative compounds when it decomposes.
The most well-known of these binders used in powder metallurgy is a solution of natural rubber in gasoline.
Solutions of various polyatomic hydrocarbons (waxes) in gasoline are also used.
Instead of solutions in gasoline, melted paraffins can be used.
@ Vadim Verlotski. NR is gasoline sounds interesting, but I could not find any info on the net. is it an industrially produced binder?
Yes, this is an old industrial technology used in the production of hard alloys from tungsten carbide. By the way, the technology with melted paraffin is also very old and was also widely used in the production of technical ceramics. There is no fresh information on old technologies on the Internet, you need to read books and articles from the 60s of the last century.
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