The present invention is a method for making small metallic spheres from pressed powder compacts and more particularly a method for making refractory metal spheres adapted for use in the manufacture of pen points. One of the objects of the present invention is the provision of a method adapted....
A vintage cosmetics accessories company that isn’t as much a household name as others on this list, Volupté, created stylish pressed-powder compacts starting in 1920. In the 1940s and 1950s, they began to produce multi-use and novelty compacts, cigarette cases, carryalls, and vanity cases...
In a series of six hard metal powder compacts pressed to a relative density of 56%, the following mean values were obtained: Fracture load: 27.3N Deflection at fracture: 254 μm Transverse rupture strength: 1.95N/mm2 Energy absorbed before rupture: 2.57 mJ Modulus of elasticity: 52N...
% Al2O3 were obtained from mixtures of nickel oxide and alumina powder reduced with hydrogen. The apparent density of the reduced powder and the relative density of pressed compacts vary nonuniformly with increasing alumina content. The material with 1 vol. % Al2O3 has the maximum values of...
The effect of small (0–1.5 wt%) addition of synthesized GO on the properties of dry pressed green alumina (Al2O3) compacts was studied. The compaction and packing behaviour was correlated with the density and microstructure of green compacts. Observed results were compared with the properties ...
Bulk amorphous samples were produced by consolidation of powderised amorphous ribbons at high pressure, 7.7 GPa. The samples pressed at room temperature exhibit big, well seen porosity. All the samples compacted at elevated temperatures show a higher relative density compared to the compacts obtained...