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Barr, F.A.; Page, R.J.
Page (R.J.) Co., Santa Ana, CA (USA)1986
Page (R.J.) Co., Santa Ana, CA (USA)1986
AbstractAbstract
[en] The feasibility of fabricating small rhenium parts with metal oxide additives by means of slip casting and extrusion techniques is described. The metal oxides, ZrO2 and HfO2 were stabilized into the cubic phase with Y2O3. Additions of metal oxide to the rhenium of up to 15 weight percent were used. Tubes of 17 mm diameter with 0.5 mm walls were slip cast by adapting current ceramic oxide techniques. A complete cast double conical nozzle demonstrated the ability to meet shapes and tolerances. Extrusion of meter long tubing lengths of 3.9 mm o.d. x 2.3 mm i.d. final dimension is documented. Sintering schedules are presented to produce better than 95% of theoretical density parts. Finished machining was found possible were requried by electric discharge machining and diamond grinding
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Apr 1986; 17 p; NASA-CR--174970; NAS--1.26:174970; Available from NTIS, PC A02/MF A01
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