Vapor phase coating of molybdenum articles

Claim 1

THE METHOD OF PRODUCING A CORROSION- AND TEMPERATURE-RESISTANT MOLYNBDENUM ARTICLE WHICH COMPRISES PASSING VOLATILIZED SILICN TETRACHLORIDE IN A STREAM F HYDRGEN IN CNTACT WITH A MOLYBDENUM ARTICLE AT A TEMPERATURE OF 1600* TO 1800* F. TO THEREBY DECOMPOSE SAID SILICN TETRACHLRIDE AND MAINTAINNG SAID ARTICLE IN CONTACT WITH SAID STREAM FOR A PERIOD OF AT LEAST TWO HOURS AND UNTIL THE SURFACE OF THE MOLYBDENUM REACTS WITH THE SILICON RESULTING FROM THE DECOMPOSITION OF THE SAID SILICON TETRACHLOORIDE TO FORM OXIDATION-RESISTANT INTERMETALLIC COMPOUNDS OF MOLYBDENUM AND SILICN AT THE MOLYBDENUM SURFACE THEREBY PRODUCING A SILICON COATED MOLYBDENUM ARTICLE CHARACTERIZED BY THE PRESENCE OF INTERMETALLIC COMPOUNDS OF SILICN AND MOLYBDENUM HAVING A PROPORTIONALLY SMALLER SILICN CONTENT FROM THE EXTERIOR SILICON LAYER TO THE MOLYBDENUM BODY.