Analysis of Species and Plasmas

Bäuerle, D.

doi:10.1007/978-3-642-17613-5_30

Cited by 1 publication

(2 citation statements)

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“…The minimum pressure to retain both silicon and carbon at the pivot peak temperatures (3390°C) is around 10 atm. The high local pressure is a result of shockwaves formed from the interaction of plasma from ablated material and the surrounding atmosphere 21,41 . Pressures over 100 atm were calculated at the contact surface of these shockwaves 42 .…”

Section: Discussionmentioning

confidence: 99%

“…The high local pressure is a result of shockwaves formed from the interaction of plasma from ablated material and the surrounding atmosphere. 21,41 Pressures over 100 atm were calculated at the contact surface of these shockwaves. 42 Shockwave generation affects component microstructure, 21 and this instance can be advantageous to component composition by limiting the amount of material lost to vaporization at the high temperatures generated by laser irradiation.…”

Section: Laser-sic Interactions and Phase Separation During Pbfmentioning

confidence: 99%

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Phase separation during the direct powder bed fusion of SiC

Lamm,

Karakoc,

Mao

et al. 2024

Int J Applied Ceramic Tech

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Powder bed fusion (PBF) is an attractive additive manufacturing option for fabrication of SiC object with complex geometries. However, the density and microstructure controls remain a challenge. This study is aimed at understanding laser–SiC interactions, with emphasis on microstructure‐processing relationships, to identify potential solutions for the process improvement. SiC tubes were fabricated by PBF of pure SiC powders without sintering additives. Comprehensive analysis by X‐ray diffraction, Raman spectroscopy, and electron microscopy indicated that binding of SiC particles was achieved by incongruent melting of SiC to a Si/C mixture containing SiC micro‐ and nanocrystallites. The phase evolution under laser irradiation of SiC was explained by phase diagrams. This study uncovered the PBF SiC microstructure at different length scales and the relationship between the microstructure and the processing parameters.

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Section: Discussionmentioning

confidence: 99%