Abstract
A subsecond duration pulse heating method is used to measure the melting point, normal spectral emittance (at the melting point, corresponding to 650 nm). and electrical resistivity (near the melting point) of the following refractory alloys: 90 Ta-10 W, 99 Nb-1 Zr, and 80 Nb-10 Ta-10 W (numbers indicate nominal composition in percentage by weight). The melting point and the normal spectral emittance are: 3286 ± 15 K and 0.396 for 90 Ta-10 W, 2737 ± 10 K and 0.351 for 99 Nb-1 Zr, and 2814 ± 10 K and 0.333 for 80 Nb-10 Ta-10 W. The inaccuracy of the normal spectral emittance and electrical resistivity results is estimated to be 3 percent and 0.5 percent, respectively.
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Schedule a callMore From: Journal of research of the National Bureau of Standards. Section A, Physics and chemistry
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