Gas Pulse Impregnation of Graphite with Carbon
- 1 June 1970
- journal article
- research article
- Published by Taylor & Francis in Nuclear Applications and Technology
- Vol. 8 (6) , 488-495
- https://doi.org/10.13182/nt70-a28648
Abstract
A vacuum-pressure pulsing process was developed to gas impregnate graphite with carbon. An inductively heated graphite substrate is cycled between vacuum and 20-psig butadiene for 2 to 30 h at 750 to 950°C. The vacuum and pressure pulse periods were, respectively, 0.5 to 1 sec and 7.5 to 60 sec. Weight increases up to 8% were achieved in graphite of original density 1.86 g/cm3, and helium permeabilities were reduced from >10−2 to −8 cm2/sec, as required for molten-salt breeder reactor application.Keywords
This publication has 2 references indexed in Scilit:
- Modifications du spectre de pores de graphites artificiels densifies par craquage de gaz naturel. Etude au moyen d'un nouveau porosimetre a absorption γCarbon, 1968
- Deposition of pyrolytic carbon in the pores of graphite bodies — I. Introduction to and results of deposition experiments using methaneCarbon, 1968