| Title |
The Effect of MnO_{2} on the Characteristics of an Infrared Radiator of Cordierite System with Pressing Method |
| Keywords |
코디어라이트 ; 적외선 방사체 ; 방사율 Cordierite ; Infrared Radiator ; Spectral Emissivity |
| Abstract |
An infrared radiator of cordierite system were manufactured byslurry casting anddry pressing method. The characteristics of cordierite (2MgO.2Al_{2}O_{3}.5SiO_{2})+30wt% clay+Xwt% MnO_{2} of infrared radiator have been investigated as a function of MnO_{2} additives (X=0, 0.1, 0.25, 0.5, 1.0, 1.5, 2.0, 2.5). The thermal expansioncoefficient was decreased with increasing amounts of MnO_{2} additives. Otherwise, the spectral emissivity was increased in the below 4.5.mu.m wavelength. Also, the infrared radiator of cordierite system which spectral emissivity was approximately 1.0 can be attainable at from 4.5.mu.m to 8.mu.m wavelength. The spectral emissivity was decreased from 8.mu.m to 14.mu.m above X=2.5. |