Radiation Induced Surface Activity Phenomenon: 1. Report - Surface Wettability on Metal Oxides
Creators
- 1. Tokyo University of Mercantile Marine, 2-1-6 Etchu-jima, Koto-Ku, Tokyo 135-8533 (Japan)
- 2. University of Tokyo (Japan)
- 3. Advanced Maritime Transport Technology Department, National Maritime Research Institute, Mitaka, Tokyo 181-0004 (Japan)
Description
Improving the limit of boiling heat transfer or critical heat flux requires that the cooling liquid can contact the heating surface, or a high-wettability, highly hydrophilic heating surface, even if a vapor bubble layer is generated on the surface. We investigated surface wettability using metal oxides irradiated by gamma rays in room condition. Contact angle, an indicator of macroscopic wettability, was measured by image processing of the images obtained by a CCD video camera. The results showed that the surface wettability on oxide metal pieces of titanium, zircaloy No. 4, SUS-304 and copper improved significantly by Radiation Induced Surface Activity (RISA) phenomenon. Highly hydrophilic conditions on the test pieces were achieved after 500 kGy irradiation of 60Co gamma ray. (authors)
Additional details
Publishing Information
- Publisher
- American Society of Mechanical Engineers - ASME
- Imprint Place
- New York (United States)
- Imprint Pagination
- 4 p.
Conference
- Title
- 10. international conference on nuclear engineering
- Acronym
- ICONE-10
- Dates
- 14-18 Apr 2002
- Place
- Arlington - Virginia (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- France
- INIS RN
- 39086163
- Subject category
- S42: ENGINEERING;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALBUMINS; CHARGE-COUPLED DEVICES; COBALT 60; COPPER; CRITICAL HEAT FLUX; GAMMA RADIATION; HEAT TRANSFER; IMAGE PROCESSING; OXIDES; SURFACES; TELEVISION CAMERAS; TITANIUM; VAPORS; WETTABILITY; ZIRCALOY
- Descriptors DEC
- ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CAMERAS; CHALCOGENIDES; COBALT ISOTOPES; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY TRANSFER; FLUIDS; GASES; HEAT FLUX; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; METALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PROCESSING; PROTEINS; RADIATIONS; RADIOISOTOPES; SEMICONDUCTOR DEVICES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS; YEARS LIVING RADIOISOTOPES; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS