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Merge branch 'main' into pdcu
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RemDelaporteMathurin authored Sep 17, 2024
2 parents 27060c7 + 373565a commit 4deb621
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1 change: 1 addition & 0 deletions h_transport_materials/material.py
Original file line number Diff line number Diff line change
Expand Up @@ -169,3 +169,4 @@ class PalladiumAlloy(Alloy):

PD60CU40 = PalladiumAlloy("60pd40cu")
PD52CU = PalladiumAlloy("pd52cu")
SIC = Compound("sic")
4 changes: 3 additions & 1 deletion h_transport_materials/property_database/__init__.py
Original file line number Diff line number Diff line change
Expand Up @@ -69,4 +69,6 @@

from . import tzm

from . import palladium_copper
from . import palladium_copper

from . import sic
91 changes: 91 additions & 0 deletions h_transport_materials/property_database/sic.py
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@@ -0,0 +1,91 @@
import h_transport_materials as htm
from h_transport_materials import Diffusivity, Solubility

u = htm.ureg

causey_alpha_diffusivity = Diffusivity(
D_0=1.09e-2 * u.cm**2 * u.s**-1,
E_D=54.9 * u.kcal * u.mol**-1,
note="alpha-SiC single crystal",
range=(u.Quantity(800, u.degC), u.Quantity(1400, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

causey_beta_diffusivity = Diffusivity(
D_0=28e-2 * u.cm**2 * u.s**-1,
E_D=65.0 * u.kcal * u.mol**-1,
note="beta-SiC single crystal",
range=(u.Quantity(800, u.degC), u.Quantity(1000, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

causey_al_doped_alpha_diffusivity = Diffusivity(
D_0=4.04e-4 * u.cm**2 * u.s**-1,
E_D=34.0 * u.kcal * u.mol**-1,
note="Al-doped alpha-SiC single crystal",
range=(u.Quantity(500, u.degC), u.Quantity(900, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

causey_vapor_dep_beta_diffusivity = Diffusivity(
D_0=1.58e-4 * u.cm**2 * u.s**-1,
E_D=73.6 * u.kcal * u.mol**-1,
note="vapor-deposited beta-SiC",
range=(u.Quantity(1000, u.degC), u.Quantity(1300, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

causey_hot_pressed_alpha_diffusivity = Diffusivity(
D_0=0.904e-4 * u.cm**2 * u.s**-1,
E_D=48.2 * u.kcal * u.mol**-1,
note="hot-pressed alpha-SiC",
range=(u.Quantity(500, u.degC), u.Quantity(800, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

causey_sintered_beta_diffusivity = Diffusivity(
D_0=8.54e-4 * u.cm**2 * u.s**-1,
E_D=64.2 * u.kcal * u.mol**-1,
note="sintered beta-SiC",
range=(u.Quantity(800, u.degC), u.Quantity(1100, u.degC)),
source="causey_hydrogen_1978",
isotope="T",
)

sic_density = (
3.21 * u.g * u.cm**-3
) # ref: https://pubchem.ncbi.nlm.nih.gov/compound/Silicon-carbide
sic_molecular_weight = (
40.096 * u.g * u.mol**-1
) # ref: https://pubchem.ncbi.nlm.nih.gov/compound/Silicon-carbide
sic_atom_density = sic_density / sic_molecular_weight


causey_beta_vapor_dep_solubility = Solubility(
S_0=8.77e-9 * u.atm**-0.5 * sic_atom_density,
E_S=-37.0 * u.kcal * u.mol**-1,
range=(u.Quantity(1000, u.degC), u.Quantity(1400, u.degC)),
note="vapor-deposited beta-SiC, at 1 atm",
isotope="D",
source="causey_hydrogen_1978",
)

properties = [
causey_alpha_diffusivity,
causey_beta_diffusivity,
causey_al_doped_alpha_diffusivity,
causey_vapor_dep_beta_diffusivity,
causey_hot_pressed_alpha_diffusivity,
causey_sintered_beta_diffusivity,
causey_beta_vapor_dep_solubility,
]

for prop in properties:
prop.material = htm.SIC

htm.database += properties
17 changes: 17 additions & 0 deletions h_transport_materials/references.bib
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Expand Up @@ -2752,4 +2752,21 @@ @article{xu_bi-directional_2017
year = {2017},
keywords = {F82H, First wall, Gas- and plasma-driven permeation, Isotopic effect, Transport parameters},
pages = {343--348},
}
@article{causey_hydrogen_1978,
title = {Hydrogen {Diffusion} and {Solubility} in {Silicon} {Carbide}},
volume = {61},
issn = {1551-2916},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1151-2916.1978.tb09284.x},
doi = {10.1111/j.1151-2916.1978.tb09284.x},
abstract = {Tritium diffusion coefficients and deuterium solubilities were measured for silicon carbide. At 500° to 1300° C, measured tritium diffusion coefficients were much lower than the recorded values for metals, whereas the activation energies for diffusion were much higher (30 to 75 kcal/mol). The solubility of deuterium in silicon carbide decreased as temperature increased and exhibited a pressure dependence of ∼P1l2.},
language = {en},
number = {5-6},
urldate = {2024-09-17},
journal = {Journal of the American Ceramic Society},
author = {Causey, R. A. and Fowler, J. D. and Ravanbakht, Camran and Elleman, T. S. and Verghese, Kuruvilla},
year = {1978},
note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1151-2916.1978.tb09284.x},
pages = {221--225},
}

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