The previous work on the silver-oxygen system from the thermodynamicists' view point, has been reviewed. The design consideration of high pressure equipment in general, and of that used here in particular, have been discussed. Fusion points of silver and silver oxide subjected to oxygen pressures ranging from 0.2 to 750 atm. have been deter-mined to derive the pressure-temperature relation for the silver -oxygen system. The eutectic point corresponding to Ag(s) ⇌ liq. ⇌ Ag20(s) is found to be at 530°C and 530 atm. Compositions of the silver-oxygen melts have been measured thermogravimetrically along the silver liquidus and on the isotherms at 950° and 1050°C in the all liquid region in the pressure range 1 to 100 atm. The extrapolated oxygen content at the eutectic point is 0.22 atom fraction. A phase diagram for the silver-silver oxide system has been constructed. Thermo-dynamic quantities for the process, ½02 (g) ⇌ 0 (liq. silver) have been derived.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:623141 |
| Date | January 1968 |
| Creators | Talukdar, Mohammed Ishaq |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10044/1/16107 |
Page generated in 0.0016 seconds