Alternate electrode materials for the SP100 reactor. Final report

TL;DRAbstract

This work was performed in response to a request by the Astro-Space Division of the General Electric Co. to develop alternate electrodes materials for the electrodes of the PD2 modules to be used in the SP100 thermoelectric power conversion system. Initially, the project consisted of four tasks: (1) development of a ZrB{sub 2} (C) CVD coating on SiMo substrates, (2) development of a ZrB{sub 2} (C) CVD coating on SiGe substrates, (3) development of CVI W for porous graphite electrodes, and (4) technology transfer of pertinent developed processes. The project evolved initially into developing only ZrB{sub 2} coatings on SiGe and graphite substrates, and later into developing ZrB{sub 2} coatings only on graphite substrates. Several sizes of graphite and pyrolytic carbon-coated graphite substrates were coated with ZrB{sub 2} during the project. For budgetary reasons, the project was terminated after half the allotted time had passed. Apart from the production of coated specimens for evalua

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