3d printing method and powder mixture for 3d printing

A 3D printing method comprising:

• generating a shielding gas atmosphere in a 3D printing device, wherein the shielding gas of the shielding gas atmosphere comprises a surface coating component which is selected from the group comprising boron nitride, graphene, carbon nanotubes, tungsten sulfide, tungsten carbide, molybdenum sulfide, molybdenum carbide, calcium fluoride, caesium molybdenum oxide sulfide, titanium silicon carbide and cerium fluoride;
• and
• laser sintering or laser melting a powder mixture in a selective laser sintering method or a selective laser melting method, wherein the powder mixture comprises a sintered component which is selected from the group comprising ceramic materials, ceramic material combinations, metal materials, metal material combinations and metal alloys.

A 3D printing method comprising:

• locally injecting a plasma at a working region of a 3D printing device, wherein the plasma comprises a surface coating component which is selected from the group comprising boron nitride, graphene, carbon nanotubes, tungsten sulfide, tungsten carbide, molybdenum sulfide, molybdenum carbide, calcium fluoride, caesium molybdenum oxide sulfide, titanium silicon carbide and cerium fluoride;
• and
• laser sintering or laser melting a powder mixture in a selective laser sintering method or a selective laser melting method in the working region of the 3D printing device, wherein the powder mixture comprises a sintered component which is selected from the group comprising ceramic materials, ceramic material combinations, metal materials, metal material combinations and metal alloys.

A powder mixture for use in a 3D printing method, comprising:

• a sintered component which is selected from the group comprising ceramic materials, ceramic material combinations, metal materials, metal material combinations and metal alloys;
• and
• at least one surface coating component which is selected from the group comprising boron nitride, graphene, carbon nanotubes, tungsten sulfide, tungsten carbide, molybdenum sulfide, molybdenum carbide, calcium fluoride, caesium molybdenum oxide sulfide, titanium silicon carbide and cerium fluoride.