Details

Autor(en) / Beteiligte

• Uvarov, V. I.
• Borovinskaya, I. P.
• Lukin, E. S.

Titel

Formation of Open Porosity Materials Based on Nickel, Aluminum and Cobalt in Self-Propagating High-Temperature Synthesis in Vacuum

Ist Teil von

• Glass and ceramics, 2013-05, Vol.70 (1-2), p.18-21

Ort / Verlag

Boston: Springer US

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• As a result of a calculation of the influence of the volume effect of a chemical reaction on the porosity of the final product for the system Al–Ni–Co in vacuum it is shown that the porosity of the synthesized material will be 7.6% higher than the initial porosity P o of the starting sample. For synthesis of SHS material with open porosity the initial batch powders were mixed in a ball mill with Al 2 O 3 balls for 1 h. The ready batch was poured into a graphite mold, which was placed into a vacuum furnace, and the batch temperature was raised to the self-inflammation temperature, after which spontaneous combustion of the batch occurred. Phase analysis of the samples, performed with a DRON-3M diffractometer, showed the presence of the main phase (CoNi) 3 Ni and free Ni. The pore size of the samples obtained was 2 – 2.5 μm. The open porosity of the samples, determined by hydrostatic weighing, was 42%.