Integrating sphere method for determining the effective spectral emissivity of superalloys at high temperatures using a single wavelength pyrometer

被引：9

作者：

Alaruri, SD

Bianchini, L

Brewington, A

Jilg, T

Belcher, B

机构：

[1] Allison Engine Company, Rolls Royce Aerospace Group, Box 420, Indianapolis

来源：

OPTICAL ENGINEERING | 1996年 / 35卷 / 09期

关键词：

superalloys; pyrometer; integrating sphere; temperature measurements;

D O I：

10.1117/1.600839

中图分类号：

O43 [光学];

学科分类号：

070207 [光学]; 0803 [光学工程];

摘要：

A method that employs an integrating sphere and a single-wavelength (1.6-mu m) pyrometer for measuring the spectral effective emissivities of superalloys in the temperature range (similar to 650 to 1050 degrees C) is described. The spectral effective emissivities for five superalloys, namely, MARM-247, MARM-509, CMSX-4, Inconel-718, and N-155 were measured. Correcting the pyrometer measurements for the variations in the object emissivity would reduce the uncertainty in the temperature measurements to <+/-1%. (C) 1996 Society of Photo-Optical Instrumentation Engineers.

引用

页码：2736 / 2742

页数：7