A method (100) of producing a heat pipe includes the following steps: (1) inserting a mandrel (10) into a hollow metal casing (20) with a space formed between the hollow metal casing and the mandrel; (2) filling into the space with a slurry (40) comprised of powders; (3) solidifying the slurry in the...http://www.google.es/patents/US7527762?utm_source=gb-gplus-sharePatente US7527762 - Method of producing heat pipe