Method for producing a component from MAX phases

Abstract

For the first time, components can be produced from MAX-phases due to the use of an additive production method. A method for producing a component from MAX phases, in particular from Ti.sub.3SiC.sub.2 and/or Cr.sub.2AlC, in which an additive manufacturing process is disclosed. Powder is applied layer by layer and densified, the grain sizes of the powder lying at 10 m to 60 m, in which the scanning speed between the energy beam of the laser or electron beam and substrate with powder lies between 400 mm/s and 2000 mm/s, in particular at 1000 mm/s to 1500 mm/s, in which the power output is between 80 W and 250 W, in particular is 100 W to 170 W, in which a spot size of the energy beam lies between 30 m and 300 m.

Claims

1. A method for producing a component from at least one MAX phase, from Ti3SiC2 and/or Cr2AlC, in which an additive manufacturing process is used, in which a powder is applied layer by layer and densified, grain sizes of the powder lying at 10 m to 60 m, in which a scanning speed between an energy beam of a laser or an electron beam and a substrate with the powder lies between 400 mm/s and 2000 mm/s in which a power output is between 80 W and 250 W, in which a spot size of the energy beam lies between 30 pm and 300 m wherein the at least one MAX phase is produced by selective laser melting.

2. The method as claimed in claim 1, in which a production of the powder is by a gas atomization.

3. The method as claimed in claim 1, in which a production of the powder is by a grinding process.

4. The method for producing the component from the at least one MAX phase as claimed in claim 1 is carried out under a shielding gas atmosphere.

5. The method for producing the component from the at least one MAX phase as claimed in claim 1, wherein the scanning speed between the energy beam of the laser or the electron beam and the substrate with the powder lies between 1000 mm/s and 1500 mm/s.

6. The method for producing the component from the at least one MAX phase as claimed in claim 1, wherein the power output is between 100 W and 170 W.

7. A method for producing a component from at least one MAX phase, from Ti.sub.3SiC.sub.2 and/or Cr.sub.2AlC, in which an additive manufacturing process is used, in which a powder is applied layer by layer and densified, grain sizes of the powder lying at 10 m to 60 m, in which a scanning speed between an energy beam of a laser and a substrate with the powder lies between 400 mm/s and 2000 mm/s in which a power output is between 80 W and 250 W, in which a spot size of the energy beam lies between 30 m and 300 m, wherein the at least one MAX phase are produced by selective laser melting.

8. The method for producing the component from the at least one MAX phase of claim 7, wherein the MAX phase are is produced by means of mixed powders of the individual components of the at least one MAX phase.

9. The method for producing the component from the at least one MAX phase of claim 7, wherein the MAX phase are is produced by means of the powder having the correct stoichiometry of the at least one MAX phase.

Description

SUMMARY

(1) An aspect relates to solving the aforementioned problem.

(2) It is proposed to produce the MAX phases in near net shape or in net shape by means of selective laser melting (SLM).

(3) This can be performed by two routes:

(4) 1) by means of mixed powders of the individual components of the MAX phase; or

(5) 2) by means of powder with the correct stoichiometry of the MAX phase.

(6) The process data for the production process by means of the SLM process are as follows for the MAX phases, specifically however for Ti.sub.3SiC.sub.2 and Cr.sub.2AlC: the grain size of the powder lies at 10 m-60 m, either gas-atomized or ground.

(7) The following is proposed as a possible process window: scanning speed: 400-2000 mm/s, preferably 1000-1500 mm/s power output: 80-250 W, preferably 100-170 W spot size: 30-300 m.

(8) In particular, a laser is used as the energy beam.

(9) The processing of the alloy under a shielding gas leads to a low oxygen component in the matrix.