US 11,814,317 B2
Refractory article and method of making
Olivier Citti, Wellesley, MA (US); Wesley S Towle, North Grosvenordale, CT (US); and David J. Lechevalier, Cambridge, MA (US)
Assigned to SAINT-GOBAIN CERAMICS & PLASTICS, INC., Worcester, MA (US)
Appl. No. 15/552,386
Filed by SAINT-GOBAIN CERAMICS & PLASTICS, INC., Worcester, MA (US)
PCT Filed Feb. 24, 2016, PCT No. PCT/US2016/019322
§ 371(c)(1), (2) Date Aug. 21, 2017,
PCT Pub. No. WO2016/138111, PCT Pub. Date Sep. 1, 2016.
Claims priority of provisional application 62/120,818, filed on Feb. 25, 2015.
Claims priority of provisional application 62/120,343, filed on Feb. 24, 2015.
Prior Publication US 2018/0044243 A1, Feb. 15, 2018
Int. Cl. C04B 35/66 (2006.01); C04B 35/185 (2006.01); C04B 41/87 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 35/657 (2006.01); C03B 5/43 (2006.01)
CPC C04B 35/185 (2013.01) [C03B 5/43 (2013.01); C04B 35/657 (2013.01); C04B 35/66 (2013.01); C04B 41/009 (2013.01); C04B 41/5037 (2013.01); C04B 41/87 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3222 (2013.01); C04B 2235/3227 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3243 (2013.01); C04B 2235/3267 (2013.01); C04B 2235/3272 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3279 (2013.01); C04B 2235/3293 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/3813 (2013.01); C04B 2235/5409 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/72 (2013.01); C04B 2235/77 (2013.01); C04B 2235/80 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A refractory article comprising:
a body including a ceramic consisting of:
mullite present in an amount of at least 93 wt % and not greater than 97 wt % for a total weight of the body; and
a dopant consisting of a combination of MgAl2O4 and Fe3O4, wherein the dopant is present in an amount of at least 3 wt. % and not greater than 7 wt. % for a total weight of the body,
wherein the body comprises an average relative emissivity over a wavelength of 0.5 microns to 5 microns of at least 0.8 and not greater than 0.99, and
wherein the body comprises a melting temperature of at least 1600° C. and not greater than 3200° C.