Aging of Columbium Alloy D-43 [electronic resource]

Mode of access: Internet.

Columbium alloy clad uranium carbide fuel element : final report [covering the period] May 1, 1959-April 30, 1960 /

"Contract no. AT-(40-1)-2559."

Columbium alloy clad uranium carbide fuel element : technical report no. 61-33 /

Work conducted at the Metals Research Laboratories, Union Carbide Metals Company, a Division of Union Carbide Corporation, under the United States Atomic Energy Commission contract no. AT-(40-1)-2559.

Methods for the analysis of columbium and its alloys /

This report consists of the analytical procedures modified or developed at Pratt & Whitney Aircraft, CANEL, for the determination of alloying constituents and impurities in columbium and its alloys. Included are spectrophotometric methods for chromium, columbium, iron, molybdenum, tungsten, nickel, nitrogen and titanium; volumetric methods for chromium, vanadium and zirconium; emission and X-ray spectrographic methods for various alloying elements; a spectrographic method for zirconium and trace impurities and miscellaneous methods for aluminum, carbon, oxygen and hydrogen.

Solid-state metallurgy studies of pure columbium and Cb-1 Zr alloy /

"Contract AT(11-1)-229."

Utilization of yttrium in gettering oxygen and nitrogen in columbium base materials /

Work performed at CANEL.

The structural stability of welds in columbium alloys. Technical documentary report no. ML-TDR-64-210.

Cover title.

Development of columbium-base alloys. Project no. 7351, Task no. 735101.

Cover title.

Isostatic pressing of UO₂ in high temperature metals /

The hot isostatic pressing process has been applied at temperatures up to 1500°C for the fabrication of high temperature fuel rods composed of UO₂ clad in columbium and UO₂ in iron-aluminum type alloy. The fused UO₂ powder apparently becomes quite plastic at temperatures above 1200°C and can be isostatically compacted at 1500°C to 98% of its theoretical density. Columbian tubes particularly lend themselves to the fabrication of fuel rods by simultaneously compacting and cladding UO₂ powders in the tubes, but the cast iron-aluminum type alloy that was used was unsatisfactory because of its brittleness.

Observations on columbuim /

"Reprinted from the Journal of the American chemical society. Vol. XXX Vol. II November, 1908."

An analysis of a mineral substance from North America, containing a metal hitherto unknown. From the Philosophical transactions.

Binder's title: Discovery of columbium.