Composite materials and method of its manufacture

Details Composite materials and method of its manufacture Composite materials and method of its manufacture

2010-05-21

2011-10-11

Hendrickson, Stuart (Department: 1734)

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C075S230000, C075S232000, C502S326000, C502S327000, C423S115000, C428S570000

Reexamination Certificate

active

08034152

ABSTRACT:
A novel solution route has been developed that after heat-treatment to 500-600° C. under inert atmosphere, yields highly porous composites of nano-sized metal (Ni) particle inclusions in ceramics (Al2O3). Metal loadings could be made from <1% to >95% Ni. The metal inclusion sizes in the Ni—Al2O3system with the 10 atom % Ni sample were 4-7 nm, while for the 75 atom % Ni sample they were 5-8 nm. It was shown that the 10 atom % Ni sample could be used as a catalyst for the conversion of CO2and CH4in the temperature range 550-700° C., while higher temperatures led to growth of the Ni particles and carbon poisoning over time. The solution routes could also be deposited as thin dense films containing <10 nm Ni particles. Such films with high Ni-particle loadings deposited on aluminium substrates have shown very good solar heat absorber proficiency and provide good substrates for carbon tube growth.

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