Exxon Research and Engineering Company

Exxon Production Research Company

Barry J Berkowitz

Russell D Kane

Bal K Kaul

James B Greer

Dawn F Jacobs

Robert J Franco

Certain high strength alloys lacking resistance to hydrogen embrittlement are cold worked and heat treated utilizing critical preselected conditions to result in a unique alloy having increased resistance to hydrogen embrittlement without unacceptable loss of strength. It is theorized that this unexpected improved resistance correlates with the concentration of certain elements, such as phosphorus and sulfur as impurities on the crystallographic boundary surfaces of the alloy.

Alloys having improved resistance to hydrogen embrittlement

A heat pipe is described for use under low temperature conditions employing preferably ammonia as the heat transport medium and a hydrogen getter material, preferably being a zirconium intermetallic alloy, capable of non-reversibly gettering hydrogen gas in the presence of ammonia and air.

Low temperature heat pipe employing a hydrogen getter

Cold-worked superalloys having improved resistance to hydrogen embrittlement are disclosed. These new superalloys are nickel- or cobalt-chromium-molybdenum superalloys and possess improved resistance to hydrogen embrittlement rendering them useful in deep sour gas wells.

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Scotch Plains, NJ, United States of America

Barry J Berkowitz