Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review
Abstract
:1. Introduction
2. Base Metal Powders
Powders Absorptance
3. Coating Processes
3.1. Mechanical Methods
3.1.1. Ball Milling
3.1.2. Turbula
3.2. Non-Mechanical Methods
3.2.1. Powders Immersion
3.2.2. Chemical Vapor Deposition and Physical Vapor Deposition
4. Properties of L-PBF Processed Parts
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Coating Method | Feasibility of the Process | Dispersion of the Coating Particles | Cost of the Process |
---|---|---|---|
HEBM | Easy | Good | Low |
LEBM | Easy | Good | Low |
Powders immersion | Complex | Excellent | Depends on the specific adopted method |
Vapor based | Complex | Excellent | High |
Metal Powder | Coating | Coating Technique | Ref. | Laser Power (W) | Scanning Speed (mm/s) | Hatching Distance (µm) | Layer Thickness (µm) | Relative Density | Mechanical Properties |
---|---|---|---|---|---|---|---|---|---|
steels | TiB2 | Ball milling | [104] | 100 | 83.33 | - | 50 | 99.99% | σ0.2 2 = 980.9 ± 10.9 MPa |
TiC | Ball milling | [106] | 100 | - | 120 | - | 98.22% @ η 3 = 300 J/mm3 | Max compressive yield strength @η 3 = 67 J/mm3 | |
Y2O3 | Ball milling | [105] | 250 | 1200 | - | 40 | 99.6% @ 0.3 wt.% Y2O3 | - | |
TiB2 | Ball milling | [27] | 100 | 83.33 | 120 | 50 | 91.5% | Hardness ~ 600 HV COF 4 = 0.161 @ 15 vol.% TiB2 Wear resistance = 1.93 × 10−7 mm3/(N·m) @ 15 vol.% TiB2 | |
TiC | Ball milling | [29] | 100 | 250 | 50 | 50 | ~96% @ 2.5 vol.% nm-TiC | Hardness = 403 HV0.2 @ 15 vol.% nm-TiC | |
SiC | Ball milling | [119] | 100 | 330 | 40 | 50 | - | TS 6 = 753 ± 49 MPa | |
FLG/SiC | Fluidized bed | [146] | 130 | 700 | 80 | 30 | ~99.9% @ 1 vol.% SiC and 0.75 vol.% FLG | - | |
Y2O3 | Solution 1 | [25] | 160 | 800 | 60 | 30 | - | Hardness = 249 ± 7 HV0.1 σc,p0.2 5 = 538 ± 17 @Tamb; σc,p0.2 5 = 430 ± 11 @600 °C σc,p5 5 = 720 ± 15 @Tamb; σc,p5 5 = 620 ± 30 @600 °C σc,p15 5 = 900 ± 30 @Tamb; σc,p15 5 = 720 ± 30 @600 °C | |
Y2O3 | Solution 1 | [131] | 160 | 800 | - | 30 | 99.2% | - |
Metal Powder | Coating | Coating Technique | Ref. | Laser Power (W) | Scanning Speed (mm/s) | Hatching Distance (µm) | Layer Thickness (µm) | Relative Density | Mechanical Properties |
---|---|---|---|---|---|---|---|---|---|
Ti and its alloys | TiB2 | Ball milling | [108] | 300 | 800 | 100 | 30 | 92.18% @ 1 wt.% TiB2 91.33% @ 2 wt.% TiB2 85.16% @ 3 wt.% TiB2 | Nanohardness = 9.96 ± 0.50 GPa @ 1 wt.% TiB2 Nanohardness = 10.57 ± 0.53 GPa @ 2 wt.% TiB2 Nanohardness = 9.98 ± 0.49 GPa @ 3 wt.% TiB2 |
TiB2 | Ball milling | [26] | 180 | 118–154 | 100 | 100 | >99.5% | Hardness = 402 ± 7 HV YS 3 = 1103 ± 20 MPa UCS 4 = 1421 ± 47 MPa Maximum strain = 17.8 ± 3.2% | |
TiC | Ball milling | [109] | 90 | 300 | 50 | 50 | 98.3% | Hardness = 577 HV0.2 COF 2 = 0.19 @ 12.5 wt.% TiC Wear resistance = 2.3 × 10−16 m3/(N·m·lap) @ 12.5 wt.% TiC | |
Al | Ball milling | [47] | 800 | 100 | 150 | 150 | Near fully dense | - | |
TiC | Ball milling | [110] | 100 | 200 | 70 | 50 | 98.2% | TS 5 = 914 MPa El 6 = 18.3% | |
CNTs | Solution 1 | [62] | 20.6 | 10 | 100 | 25 | - | Hardness = 581 ± 28 HV @ 3 wt.% CNTs | |
CNTs | FBCVD | [48] | 135 | 600 | 50 | 30 | 99.9% | YS 3 = 1162 MPa UCS 4 = 2170 MPa El 6 = 3.2% UTS 7 = 1255 MPa CS 8 = 23.8% |
Metal Powder | Coating | Coating Technique | Ref. | Laser Power (W) | Scanning Speed (mm/s) | Hatching Distance (µm) | Layer Thickness (µm) | Relative Density | Mechanical Properties |
---|---|---|---|---|---|---|---|---|---|
Al and its alloys | CNTs | Solution 1 | [144] | 350 | 1250 | 60 | 30 | 99.1% | YS 4 = 99 MPa El 6 ~ cost UTS 7 = 129 MPa |
Ni | Solution 1 | [125] | 400 | 1000 | 60 | 30 | Near fully dense @ 0.5 wt.% Ni | YS 4 = 146 ± 1 MPa @ 0.5 wt.% Ni El 6 = 18 ± 1% @ 0.5 wt.% Ni UTS 7 = 182 ± 0.5 MPa @ 0.5 wt.% Ni | |
Co | Solution 1 | [126] | 400 | 1000 | 60 | 30 | Near fully dense @ 0.5 wt.% Co | YS 4 = 116 MPa @ 0.5 wt.% Co El 6 ~ cost @ 0.5 wt.% Co UTS 7 = 149 MPa @ 0.5 wt.% Co | |
SiO2 | Turbula | [16] | 100 | 250 | 50 | 30 | 99.98% @ atm Ar | Hardness = 132 HV @ η 2 = 80 J/mm3 | |
GO | Solution 1 | [128] | 20,6 | 10 | 100 | 25 | 97.36% | Hardness = 45.6 ± 2.2 HV (trasversal cross section) Hardness = 45.5 ± 2.5 HV (longitudinal cross section) | |
Al2O3 | Ball milling | [22] | 130 | 550 | - | 70 | 97.3% | Hardness = 175 HV0.1 COF 3 = 0.11 Wear resistance = 4.75 × 10−5 mm3/(N·m) | |
TiC | Ball milling | [107] | 120 | 200 | 50 | 50 | - | Hardness = 188.3 HV0.1 TS 5 = 486 MPa El 6 = 10.9% | |
CaB6 | Ball milling | [28] | 200 | 1000 | 100 | 30 | >99.5% | Hardness = 132 ± 4 HV YS 4 = 348 ± 16 MPa El 6 = 12.6 ± 0.6% UTS 7 = 391 ± 22 MPa | |
GO | Solution 1 | [63] | 95 | 200 | 45–105 | 30 | 2.35 g/cm3 | Hardness = 100.6 HV | |
Cu | Solution 1 | [135] | 200 | - | 80 | 30 | 99.1 ± 0.2% | Hardness = 110.3 ± 5.8 HV0.5 YS 4 = 264 ± 1.8 MPa El 6 = 12 ± 0.5% UTS 7 = 461 ± 0.2 MPa E 8 = 73 ± 1.8 GPa |
Metal Powder | Coating | Coating Technique | Ref. | Laser Power (W) | Scanning Speed (mm/s) | Hatching Distance (µm) | Layer Thickness (µm) | Relative Density | Mechanical Properties |
---|---|---|---|---|---|---|---|---|---|
Cu and its alloys | Nitrides, carbides | Thermochemical | [151] | 500 | 800 | 90 | 30 | 98.6% | YS 2 = 183 ± 7 MPa TS 3 = 254 ± 5 MPa El 4 = 39 ± 2% K 6 = 24 ± 0.2 IACS% Thermal conductivity = 112 ± 1 W/(m·K) |
C | Turbula | [19] | 725 | 400 | 120 | 30 | 98% | Hardness = 0.637 ± 0.02 GPa TS 3 = 125 ± 11 MPa E 5 = 105 ± 2 GPa Proof (yield) strength = 64 ± 7 MPa Ductility = 3 ± 1% K 6 = 22.7 × 106 S/m | |
C | Mixing + heat treatment | [152] | 500 | 700 | 90 | 30 | 96.1% @ 400 W and 200 m/s | YS 2 = 174 ± 3 MPa TS 3 = 281 ± 1 MPa El 4 = 36 ± 1% K 6 = 39 ± 1 IACS% Thermal conductivity = 196 ± 3 W/(m·K) | |
CrZr | PVD | [20] | 270 | 300 | 90 | - | 94.3% | - | |
Sn | Solution 1 | [17] | 500 | 600 | 105 | 30 | 99.6% | Hardness = 90 ± 3 HV0.3 YS 2 = 203 ± 4 MPa TS 3 = 256 ± 14 MPa El 4 = 21 ± 2% K 6 = 80 ± 1 IACS% Thermal conductivity = 334 ± 4 W/(m·K) | |
Ni/Sn | Solution 1 | [21] | 200 | 100 | 100 | 20 | - | - |
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Bidulsky, R.; Gobber, F.S.; Bidulska, J.; Ceroni, M.; Kvackaj, T.; Grande, M.A. Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review. Metals 2021, 11, 1831. https://doi.org/10.3390/met11111831
Bidulsky R, Gobber FS, Bidulska J, Ceroni M, Kvackaj T, Grande MA. Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review. Metals. 2021; 11(11):1831. https://doi.org/10.3390/met11111831
Chicago/Turabian StyleBidulsky, Robert, Federico Simone Gobber, Jana Bidulska, Marta Ceroni, Tibor Kvackaj, and Marco Actis Grande. 2021. "Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review" Metals 11, no. 11: 1831. https://doi.org/10.3390/met11111831