Ar	surface area concentration of rough coating shell	[m2 m−3]
As	surface area concentration of smooth coating shell	[m2 m−3]
A2	surface area concentration of coating particles	[m2 m−3]
a1	surface area of coating monomer	[m2]
a2	surface area of coating particle	[m2]
a2f	surface area of fully-coalesced (spherical) coating particle	[m2]
C	coating precursor vapor concentration	[# m−3]
C0	initial coating precursor vapor concentration	[# m−3]
CR	cooling rate	[K s−1]
Df	fractal dimension	[-]
d2	collision diameter of coating particle	[m]
dcs	collision diameter of core particle (smooth)	[m]
dcr	collision diameter of core particle (fractal-like)	[m]
dpc	primary particle diameter of core particle	[m]
dpcr	equivalent primary particle diameter of core agglomerate coated with rough shells	[m]
dpcs	diameter of core primary particle (smooth)	[m]
dpcδ	diameter of core primary particle with smooth coating shell (fractal-like)	[m]
dp,min	minimum sintering primary particle diameter	[m]
dpr	primary particle diameter of rough coating shell	[m]
dp2	primary particle diameter of coating particle	[m]
Fsc	fraction of smooth coating shells	[%]
k	overall oxidation rate constant	[s−1]
kg	gas phase oxidation rate constant	[s−1]
ks	overall surface oxidation rate constant	[s−1]
N1	number concentration of coating monomers	[# m−3]
N2	number concentration of coating particles	[# m−3]
Nc	number concentration of core particles	[# m−3]
Nc0	initial number concentration of core particles	[# m−3]
nm	number of monomers per precursor molecule	[-]
np2	number of primary particles per coating particle	[-]
npc	number of core primary particles per core particle	[-]
npc0	initial number of core primary particles per core particle	[-]
npcr	number of equivalent primary particles per core agglomerate coated with rough shells	[-]
Q	gas flow rate	[m3 s−1]
Q0	initial gas flow rate	[m3 s−1]
r	volume ratio, r = v2/v1	[-]
T	temperature	[K]
t	residence time	[s]
Vr	volume concentration of rough coating shells	[m3 m−3]
Vs	volume concentration of smooth coating shells	[m3 m−3]
V2	volume concentration of coating particles	[m3 m−3]
v1	volume of coating monomer	[m3]
v2	volume of coating particle	[m3]
WF	weight fraction of coating material	[%]