Imperial Chemical Industries Limited: preliminary studies in the localised oxidation...

Imperial Chemical Industries Limited: preliminary studies in the localised oxidation of uranium P C S Hayfield.

Report contains 17 photographs showing apparatus used and the results of studies.

1)"Photograph of cell constructed for studying the uranium/carbon monoxide reaction." Size 18cm x 15cm.

2)"Photomicrograph of electropolished reactor grade uranium after a normal sequence of metallographic preparation. x 1400." Size 6cm x 8cm.

3)"Photomicrograph of electrobrightened sample of machine-ground reactor grade uranium. x 1400." Size 6cm x 8cm.

4)"Photomicrograph of electropolished reactor grade uranium exposed to air at nominal 0% RH for three days. x 1400." Size 6cm x 8cm.

5)"Photomicrograph of electropolished reactor grade uranium exposed to air at nominal 50% RH for three days. x 1400." Size 6cm x 8cm.

6)"Electron micrographs of inclusions in electropolished reactor grade uranium x 20,000 - heated in air at 70°C for 2 hours." Size 10cm x 10cm.

7)"Electron micrographs of inclusions in electropolished reactor grade uranium x 20,000 - heated in carbon monoxide at 300°C for 3 hours." Size 10cm x 10cm.

8)"Photomicrographs of reactor grade uranium bar at various stages in processing at Springfields Works x 12 - as lathe turned." Size 6cm x 8cm.

9)"Photomicrographs of reactor grade uranium bar at various stages in processing at Springfields Works x 12 - bar-turned, reeled and stored in air at room temperature for 20 days." Size 6cm x 8cm.

10)"Photomicrographs of reactor grade uranium bar at various stages in processing at Springfields Works x 12 - bar prepared according to the normal machining schedule, canned in Magnix, pressurised at 510°C for 4 hours and finally annealed at 400°C for 24 hours." Size 6cm x 8cm.

11)"Photomicrographs of reactor grade uranium bar at various stages in processing at Springfields Works x 12 - as previous, but showing preferential oxidation attack associated with scratch mark." Size 6cm x 8cm.

12)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - as electropolished. x 600." Size 6cm x 8cm.

13)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - same area as previous, but after exposure to moist carbon dioxide at 400°C for 4 hours. x 600." Size 6cm x 8cm.

14)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - heated in moist carbon dioxide at 400°C for 4 hours. x 1400." Size 6cm x 8cm.

15)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - heated for 4 hours at 400°C in static carbon dioxide stored over phosphorus pentoxide. x 100." Size 6cm x 8cm.

16)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - heated for 4 hours at 200°C in static carbon monoxide stored over phosphorus pentoxide. It is suspected that residual oxygen may have accelerated oxidation attack. x 600." Size 6cm x 8cm.

17)"Photomicrographs of electropolished reactor grade uranium specimens after various treatments - heated for 4 hours at 400°C in static carbon monoxide. Glass vessel 'gettered' by heating further uranium sample at 600°C before releasing carbon monoxide to principal specimen. x 1000." Size 6cm x 8cm.

Includes 17 photographs depicting: Localised oxidation of uranium: cell for studying the uranium/carbon monoxide reaction; photomicrographs and electron micrographs of reactor grade uranium under various conditions. Dated 1960.