C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/374
C01B 35/00 (2006.01) C01B 35/02 (2006.01) C01B 35/04 (2006.01)
Patent
CA 1251920
-14- ABSTRACT OF THE DISCLOSURE The invention relates to a process for the production of porous products of boron or boron compounds. This process comprises the following stages: 1) - suspending the boron powder in a solution of an alkali metal salt, hydroxide and/or oxide, 2) - then separating the powder from the suspension liquid by settling, 3) - drying the thus separated powder to obtain an agglomerated powder, and 4) - subjecting the thus obtained agglomerated powder to at least two heat treatments performed at different temperatures, the final stage of the heat treatment being performed at a temperature of 150.0 to 2200°C and the first stage being performed at a temperature below that of the final stage, The heat treatment can be performed in three stages, as shown in the attached graph. B 7899.3 MDT
479843
Boncoeur Marcel
Hansz Bernard
Lieven Thierry
Commissariat A. L'energie Atomique
Goudreau Gage Dubuc
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