# Copyright 2019 TerraPower, LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# cython: profile=False
"""
Thorium Oxide solid ceramic.
Data is from [#IAEA-TECDOCT-1450]_.
.. [#IAEA-TECDOCT-1450] Thorium fuel cycle -- Potential benefits and challenges, IAEA-TECDOC-1450 (2005).
https://www-pub.iaea.org/mtcd/publications/pdf/te_1450_web.pdf
"""
from armi.utils.units import getTk
from armi.materials.material import Material
[docs]class ThoriumOxide(Material):
name = "ThO2"
[docs] def setDefaultMassFracs(self):
r"""ThO2 mass fractions. Using Pure Th-232. 100% 232
Thorium: 232.030806 g/mol
Oxygen: 15.9994 g/mol
2 moles of oxygen/1 mole of Thorium
grams of Th-232 = 232.030806 g/mol* 1 mol = 232.030806 g
grams of Oxygen = 15.9994 g/mol* 2 mol = 31.9988 g
total=264.029606 g.
Mass fractions are computed from this."""
self.setMassFrac("TH232", 0.8788)
self.setMassFrac("O16", 0.1212)
[docs] def density(self, Tk=None, Tc=None):
"""g/cc from IAEA TE 1450"""
Tk = getTk(Tc, Tk)
return 10.00
[docs] def linearExpansion(self, Tk=None, Tc=None):
r"""m/m/K from IAEA TE 1450"""
Tk = getTk(Tc, Tk)
self.checkTempRange(298, 1223, Tk, "linear expansionn")
return 9.67e-6
[docs] def thermalConductivity(self, Tk=None, Tc=None):
r"""W/m-K from IAEA TE 1450"""
Tk = getTk(Tc, Tk)
return 6.20
[docs] def meltingPoint(self):
r"""melting point in K from IAEA TE 1450"""
return 3643.0