Żieda fid-densità tat-trab tal-grafita

(Żieda fid-densità tat-trab tal-grafita)

L-invenzjoni preżenti tirrigwarda proċess għall-produzzjoni ta 'trabijiet tal-grafita ta' densità tal-massa miżjuda. Il-proċess jinkludi: a) l-applikazzjoni ta 'trattament tal-wiċċ mekkaniku għal partiċelli ta' trab tal-grafita; b) accelerating fluidized graphite powder particles in a gas environment; c) changing the surface structures of the graphite powder particles; d) modifying the structural parameters of the graphite particles and their density; e) enhancing the compressibility of the graphite powders. This process can be used for producing mouldings.

Per eżempju, an electrode with a density of 1.8 g/cc and a porosity of 52% was prepared. It was then air dried and measured. Fl-istess ħin, the electrodes were made into 2325 coin cells.

These tests were performed with synthetic and natural graphite powders. The experiments were performed using a dilatometer. Graphite with higher ash content tends to have a higher density.

During the sintering of ferrous PM parts, graphite almost completely reacts. The sintering time is a crucial parameter. If the sintering time is too short, there is a risk of incomplete carbon diffusion. Għalhekk, the sintering time should be sufficiently long to ensure complete carbon diffusion.

In the case of a medium density high carbon part, it may be advantageous to mix natural and synthetic graphite. This mixture can be used for producing metallic sintering materials, such as duryplastic graphite-polymer composites. Barra minn hekk, it is possible to increase the solids content of liquid carbon dispersions by more than 5% to more than 30%.

(Żieda fid-densità tat-trab tal-grafita)