TY - RPRT TI - Refractory coating protects intricate graphite elements from high-temperature hydrogen AU - Ferris, J. R. AU - Patterson, R. L. AU - Steffen, R. J. AU - Vogel, C. E. PY - 1966 UR - https://ntrs.nasa.gov/citations/19660000084 ID - 19660000084 ER -