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1. WO2010093679 - NANOPARTICLE THIN-FILM COATINGS FOR ENHANCEMENT OF BOILING HEAT TRANSFER

Publication Number WO/2010/093679
Publication Date 19.08.2010
International Application No. PCT/US2010/023733
International Filing Date 10.02.2010
IPC
C23C 26/00 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
26Coating not provided for in groups C23C2/-C23C24/87
C23C 28/00 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
28Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups C23C2/-C23C26/173
B05D 1/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
1Processes for applying liquids or other fluent materials
02performed by spraying
04involving the use of an electrostatic field
B05D 3/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
3Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
02by baking
CPC
F22B 37/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
02applicable to more than one kind or type of steam boiler
04and characterised by material, e.g. use of special steel alloy
F28F 13/185
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
13Arrangements for modifying heat-transfer, e.g. increasing, decreasing
18by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
185Heat-exchange surfaces provided with microstructures or with porous coatings
F28F 2245/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
2245Coatings; Surface treatments
02hydrophilic
Applicants
  • MASSACHUSETTS INSTITUTE OF TECHNOLOGY [US]/[US] (AllExceptUS)
  • RUBNER, Michael [US]/[US] (UsOnly)
  • BUONGIORNO, Jacopo [IT]/[US] (UsOnly)
  • HU, Lin-wen [US]/[US] (UsOnly)
  • FORREST, Eric [US]/[US] (UsOnly)
  • WILLIAMSON, Erik [US]/[US] (UsOnly)
  • COHEN, Robert [US]/[US] (UsOnly)
Inventors
  • RUBNER, Michael
  • BUONGIORNO, Jacopo
  • HU, Lin-wen
  • FORREST, Eric
  • WILLIAMSON, Erik
  • COHEN, Robert
Agents
  • SAYRE, Robert
Priority Data
61/151,58611.02.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NANOPARTICLE THIN-FILM COATINGS FOR ENHANCEMENT OF BOILING HEAT TRANSFER
(FR) REVÊTEMENTS DE COUCHES MINCES DE NANOPARTICULES POUR L'AMÉLIORATION DE L'ÉCHANGE THERMIQUE PAR ÉBULLITION
Abstract
(EN)
A superhydrophilic thin film is formed on a metal surface of a boiler vessel to alter the wettability and roughness of the surface, which, in turn, changes the boiling behavior at the surface. The superhydrophilic film is formed by depositing a layer of a first ionic species on the surface from a solution. A second ionic species having a charge opposite to the that of the first ionic species is then deposited from solution onto the surface to produce a bilayer of the first ionic species and the oppositely charged second ionic species. The depositions are then repeated to form a plurality of bilayers, on top of the preceding bilayer. The bilayers are then heated, leaving the second ionic species on the metal surface to form a superhydrophilic film.
(FR)
La présente invention concerne une couche mince super hydrophile qui est formée sur une surface métallique d'un récipient de chaudière afin de modifier l'aptitude au mouillage et la rugosité de la surface, ce qui, à son tour, modifie le comportement d'ébullition à la surface. La couche super hydrophile est formée par le dépôt d'une couche d'une première espèce ionique sur la surface à partir d'une solution. Une seconde espèce ionique possédant une charge opposée à celle de la première espèce ionique est ensuite déposée à partir de la solution sur la surface afin de produire une bicouche de la première espèce ionique et de la seconde espèce ionique à charge opposée. Les dépôts sont alors répétés afin de former une pluralité de bicouches, sur le dessus de la bicouche précédente. Les bicouches sont alors chauffées, ce qui laisse la seconde espèce ionique sur la surface métallique pour former une couche super hydrophile.
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