Title:
METALLIC MATERIAL FOR HEAT TRANSMISSION PROVIDED WITH HYDROPHILICITY
Document Type and Number:
Japanese Patent JP3029522
Kind Code:
B2
Abstract:
PURPOSE: To produce a metallic material for heat transmission having excellent hydrophilicity by adjusting the X-ray spectral peak intensity due to the hydrophilic group (-C=O) in the residual organic matter on the surface of the metallic material used as a heat transmission material of the drip liquid film heat exchanger, etc., to an intensity higher than that due to the hydrophobic group (-CH) in the residual organic matter.
CONSTITUTION: The metallic material for heat transmission used as a material of the drip liquid film heat exchanger, etc., is subjected to corona discharge treatment and then an X-ray spectroscopic analysis of the residual organic matter on the surface of the metallic material for heat transmission is performed. At this time, the spectral peak intensity due to the hydrophilic group (-C=O) is adjusted to a value higher than that due to the hydrophobic group (-CH). Thus, the metallic material having excellent hydrophilicity can be obtained and further by coating the surface of the metallic material with an oxide film having 300 to 1400&angst average thickness, its hydrophilicity can be maintained for a long period of time.
Inventors:
Masashi Ishida
Application Number:
JP19280293A
Publication Date:
April 04, 2000
Filing Date:
July 07, 1993
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C23C26/00; F28F13/18; F28F21/08; (IPC1-7): C23C26/00; F28F21/08
Attorney, Agent or Firm:
Masanori Fujimaki