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A heterogeneous precipitation method is described for obtaining nanocomposite powders consisting of Ni nanoparticles homogeneously dispersed within γ-Al 2 O 3 . The amorphous Al(OH) 3 was nucleated on the surfaces of NiO nanoparticles and crystallized to γ-Al 2 O 3 at 900<space> o C. The porosity of γ-Al 2 O 3 allowed the growth...
In situ growth of needlelike LaAl 11 O 18 grains reinforcing Al 2 O 3 composites can be fabricated by a coprecipitation method using La(NO 3 ) 3 6H 2 O and Al(NO 3 ) 3 9H 2 O as starting materials. The new two-step process involved firstly preparing needlelike LaAl 11 O 18 grains distributed...
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