Composite powder with iron based particles coated with graphene material
AssigneeGraphMaTech AB
InventorsUlf Jansson, Simon Tidén, Mamoun Taher, Luis Diaz, Tommi Remonen
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Abstract
The present invention relates to graphene coated iron based particles and a method of producing such. Provided is a composite powder suitable for powder metallurgy and additive manufacturing processes comprising particles of an iron based material with a coating of a graphene based material wherein the concentration of the graphene based material is between 0.1 wt % and 1.0 wt %.
Claims18
A composite powder suitable for powder metallurgy and additive manufacturing processes, the composite powder comprising particles with a core of an iron based material and a coating of a graphene based material,
- wherein a concentration of the graphene based material is between 0.2 wt % and 1.0 wt %,
- wherein the core is fully covered by the graphene based material,
- wherein the graphene based material of the coating is graphene oxide (GO), reduced graphene oxide (rGO), partly reduced graphene oxide, graphene nanoplatelets (GNP), or a mixture of two or more of GO, rGO, partly reduced graphene oxide and GNP,
- wherein the iron based material core has a size distribution wherein a majority of the particles is in the range of 1-100 μm,
- wherein the iron based material of the particles is a stainless steel,
- wherein an avalanche angle of the composite powder is in a range of 57.7° to 60.20°, and
- wherein an avalanche energy of the composite powder is in a range of 25.35 KJ/Kg to 41.33 KJ/Kg.
A composite powder suitable for powder metallurgy and additive manufacturing processes, the composite powder comprising particles with a core of an iron based material and a coating of a graphene based material,
- wherein a concentration of the graphene based material is between 0.2 wt % and 1.0 wt %,
- wherein the core is fully covered by the graphene based material,
- wherein the graphene based material of the coating is graphene oxide (GO), reduced graphene oxide (rGO), partly reduced graphene oxide, graphene nanoplatelets (GNP), or a mixture of two or more of GO, rGO, partly reduced graphene oxide and GNP,
- wherein the iron based material core has a size distribution wherein a majority of the particles is in the range of 1-100 μm,
- wherein the iron based material of the particles consists of pure iron,
- wherein an avalanche angle of the composite powder is in a range of 56.2° to 60.5°, and
- wherein an avalanche energy of the composite powder is in a range of 15 KJ/Kg to 18.3 KJ/Kg.
The composite powder according to 10, wherein the iron based material core has a size distribution wherein a majority of the particles is in the range of 1-50 μm.
Dependencies are inferred from the claim text.