Journal of Inorganic Materials, Volume. 39, Issue 7, 754(2024)
Effect of Particle Grading on Properties of Silicon Carbide Ceramics Prepared by Selective Laser Sintering Printing Combined with Solid-phase Sintering at Atmospheric Pressure
Figures & Tables(9)
. Pore size distribution and corresponding SEM images of the samples
. X, Y, and Z-axis shrinkage rate of CIP-PIP-2-SSiC for gradation and D50=82 μm systems
Table 1. Parameters for SLS printing
View tableView in ArticleTable 1. Parameters for SLS printing
Laser power/ W Hatch distance/ μm Scanning speed/ (mm·s-1) Preheating temperature/ ℃ Layer thickness/ mm Energy density / (J·mm-3) 35 80 7620 60 0.1 0.057
Table 2. Abbreviations for experimental procedures
View tableView in ArticleTable 2. Abbreviations for experimental procedures
Abbreviation Experimental procedure SLS-SSiC Solid-phase sintering at atmospheric pressure after SLS CIP-SSiC Solid-phase sintering at atmospheric pressure after SLS and CIP CIP-PIP-1-SSiC Solid-phase sintering at atmospheric pressure after SLS and CIP followed by PIP once CIP-PIP-2-SSiC Solid-phase sintering at atmospheric pressure after SLS and CIP followed by PIP twice PIP-4-SSiC Solid-phase sintering at atmospheric pressure after SLS and PIP four times
Table 3. Effect of different processes on properties of SiC ceramics with gradation and D50=82 μm systems
View tableView in ArticleTable 3. Effect of different processes on properties of SiC ceramics with gradation and D50=82 μm systems
Sample Bulk density/ (g·cm-3) Open porosity/% Flexural strength/MPa Elastic modulus/GPa Fracture toughness/(MPa·m1/2) SLS-SSiC Gradation 1.41 52.16 3.49 — — D50=82 μm 1.30 54.23 3.12 — — CIP-SSiC Gradation 2.54 6.37 136.8 127 1.98 D50=82 μm 2.29 10.01 99.4 111 1.72 CIP-PIP-1-SSiC Gradation 2.67 7.43 142.1 118 2.16 D50=82 μm 2.53 7.05 120.5 107 2.09 CIP-PIP-2-SSiC Gradation 2.69 7.27 150.3 106 2.04 D50=82 μm 2.51 7.59 123.9 113 2.11 PIP-4-SSiC Gradation 2.29 20.2 59.6 89 1.37 D50=82 μm 2.15 19.8 55.7 75 1.19
Table 4. Comparison of densities and flexural strengths of SiC ceramics prepared in this work with literature reports
View tableView in ArticleTable 4. Comparison of densities and flexural strengths of SiC ceramics prepared in this work with literature reports
Sample Bulk density / (g·cm-3) Open porosity/% Flexural strength/MPa Ref. CIP-SSiC PIP-4-SSiC 2.67 6.37 136.8 This work 2.29 20.2 59.6 CIP-SSiC — 7.02 56.2 [ 20 ]CIP 2.12 33.88 59.47 [ 21 ]PIP-7 — 10 20 [ 22 ]PIP-8 2.45 5.05 152.6 [ 23 ]
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Kanglong WANG, Jie YIN, Xiao CHEN, Li WANG, Xuejian LIU, Zhengren HUANG. Effect of Particle Grading on Properties of Silicon Carbide Ceramics Prepared by Selective Laser Sintering Printing Combined with Solid-phase Sintering at Atmospheric Pressure[J]. Journal of Inorganic Materials, 2024, 39(7): 754
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Received: Dec. 18, 2023
Accepted: --
Published Online: Aug. 30, 2024
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