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1. (WO2009051595) HIGH TEMPERATURE SOLAR SELECTIVE COATINGS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2009/051595 International Application No.: PCT/US2007/081838
Publication Date: 23.04.2009 International Filing Date: 18.10.2007
IPC:
F24J 2/02 (2006.01) ,C23C 14/00 (2006.01) ,C23C 16/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24
HEATING; RANGES; VENTILATING
J
PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
2
Use of solar heat, e.g. solar heat collectors
02
Solar heat collectors with support for article heated, e.g. stoves, ranges, crucibles, furnaces or ovens using solar heat
C CHEMISTRY; METALLURGY
23
COATING 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
C
COATING 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
14
Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
C CHEMISTRY; METALLURGY
23
COATING 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
C
COATING 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
16
Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes
Applicants:
KENNEDY, Cheryl E. [US/US]; US (UsOnly)
MIDWEST RESEARCH INSTITUE [US/US]; 425 Volker Boulevard Kansas City, Missouri 64110, US (AllExceptUS)
Inventors:
KENNEDY, Cheryl E.; US
Agent:
WHITE, Paul J.; National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401, US
Priority Data:
Title (EN) HIGH TEMPERATURE SOLAR SELECTIVE COATINGS
(FR) REVÊTEMENTS SOLAIRES SÉLECTIFS HAUTE TEMPÉRATURE
Abstract:
(EN) improved solar collectors (40) comprising glass tubing (42) attached to bellows (44) by airtight seals (56) enclose solar absorber tubes (50) inside an annular evacuated space (54;. The exterior surfaces of the solar absorber tubes (50) are coated with improved solar selective coatings {48} which provide higher absorbance, lower emittance and resistance to atmospheric oxidation at elevated temperatures. The coatings arc multilayered structures comprising solar absorbent layers (26) applied to the metal surface of the absorber tubes (50), typically stainless steel, topped wiih antireflective Savers (28) comprising at least two layers (30. 32) of refractory metal or metalloid oxides (such as titania and silica) with substantially differing indices of refraction in adjacent layers. Optionally, at least one layer of a noble metal such as platinum can be included between some of the layers. The absorbent layers cars include cermet materials comprising particles of metal compounds is a matrix, which can contain oxides of refractory metals or metalloids such as silicon. Reflective layers within the coating layers can comprise refractory metal silicides and related compounds characterized by the formulas TiSi. Ti3SiC2, TiAlSi, TiAN and similar compounds for Zr and Hf. The titania can be characterized by the formulas TiO2, Ti3O5. TiOx or TiOxN1-x with x 0 to 1. The silica can be at least one of SiO2, SiO2x or SiO2xN1-x with x = 0 to 1.
(FR) Des collecteurs solaires améliorés (40) comprenant un tube en verre (42) fixé à des soufflets (44) par des joints étanches à l'air (56) renferment des tubes absorbeurs solaires (50) à l'intérieur d'un espace annulaire sous vide (54). Les surfaces extérieures des tubes absorbeurs solaires (50) sont recouvertes de revêtements solaires sélectifs améliorés {48} qui fournissent une absorbance supérieure, une émissivité inférieure et une résistance à l'oxydation atmosphérique à des températures élevées. Les revêtements sont des structures multicouches comprenant des couches absorbantes solaires (26) appliquées sur la surface métallique des tubes absorbeurs (50), généralement en acier inoxydable, surmontées d'économiseurs antireflets (28) comprenant au moins deux couches (30. 32) de métal réfractaire ou d'oxydes métalloïdes (tels que du titane et de la silice) ayant des indices de réfraction sensiblement différents dans des couches adjacentes. Facultativement, au moins une couche de métal noble, tel que du platine, peut être incluse entre certaines des couches. Les couches absorbantes peuvent comprendre des matériaux cermet comprenant des particules de composés métalliques et une matrice, qui peuvent contenir des oxydes de métaux réfractaires ou de métalloïdes, tels que du silicium. Des couches réfléchissantes à l'intérieur des couches de revêtement peuvent comprendre des siliciures métalliques réfractaires et des composés associés caractérisés par les formules TiSi, Ti3SiC2, TiAlSi, TiAN et des composés similaires pour le Zr et le Hf. Le titane peut être caractérisé par les formules TiO2, Ti3O5, TiOx ou TiOxN1-x avec x = 0 à 1. La silice peut être une des formules suivantes : SiO2, SiO2x et/ou SiO2xN1-x avec x = 0 à 1.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)