Title: Process for producing heat pipe
Application Number: 86108394 Application Date: 1986.12.10
Publication Number: 1011643 Publication Date: 1987.06.17
Approval Pub. Date: 1991.01.23 Granted Pub. Date: 1991.01.23
International Classifi-cation: C23C22/60;C23F11/18
Applicant(s) Name: Showa Aluminum Corp. Address:
Inventor(s) Name: Kazunari Noguchi;Koichiro Fukui;Yuichi Furukawa
Attorney & Agent: CAI MINGJUN XIN ZHESHENG
Abstract:
    A process for producing a heat pipe including the steps of treating the inner surface of a steel container with an aqueous solution of a vanadate with heating, and enclosing in the container a working liquid prepared by adding an alkalinizing pH adjusting agent to pure water and having an adjusted pH of 8 to 12. When the container inner surface is treated with the aqueous vanadate solution with heating, a protective layer covering the inner surface is formed. The working liquid, when in the range of 8 to 12 in pH, maintains the protective layer in a stable state over a prolonged period of time.
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