The following are summaries of five of the papers presented at a Meeting of the Midlands Section held on February 24th, 1971, and reported in the May issue of Proceedings (p. 94).
A chemical procedure for the determination of oxygen in titanium and titanium-base alloys is described. The solid sample is admixed with graphite and chlorinated in an atmosphere of argon and the products of the reaction are subsequently isolated, excess of chlorine being removed by reaction with antimony. The liberated carbon monoxide has been shown to bear a stoicheiometric relationship to the amount of oxygen present in the sample, and in the final stages of the procedure the purified carbon monoxide is oxidised to carbon dioxide and weighed.The results were reproducible when the procedure was applied to the analysis of titaniummanganese alloys : this potential application is an outstanding advantage over the vacuum fusion procedure. With a single apparatus, about twelve determinations can be completed in a normal working week of 5 days. This is about the same rate as that a t which oxygen can be determined by the macro vacuum fusion procedure, but, whereas a complete vacuum fusion unit costs about A2500 and requires fairly constant attention, apparatus for the recommended procedure costs about i120 and i t is estimated that three units could be operated simultaneously.THE most reliable procedure for the determination of oxygen in titanium and its alloys is that based on the principle of vacuum fusion.1.'~~3~47j~617 In this procedure, the sample is
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