Invention Grant
- Patent Title: Process for the production of an optically selective coating of a substrate for high temperature receiver solar devices and relative material obtained
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Application No.: US14427863Application Date: 2013-09-18
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Publication No.: US09786799B2Publication Date: 2017-10-10
- Inventor: Guido Spano′ , Carla Lazzari , Marcello Marella
- Applicant: ENI S.P.A.
- Applicant Address: IT Rome
- Assignee: Eni S.P.A.
- Current Assignee: Eni S.P.A.
- Current Assignee Address: IT Rome
- Agency: Abel Law Group, LLP
- Priority: ITMI2012A1572 20120921
- International Application: PCT/EP2013/069386 WO 20130918
- International Announcement: WO2014/044712 WO 20140327
- Main IPC: C23C14/00
- IPC: C23C14/00 ; H01L31/0216 ; C23C14/06 ; C23C14/16 ; C23C14/34 ; C23C28/00 ; F24J2/48 ; G02B1/14 ; G02B1/113 ; G02B5/20

Abstract:
A process for the production of an optically selective coating of a receiver substrate of a suitable material for solar receiver devices particularly suitable for operating at high temperatures, more specifically for receiver tubes of linear parabolic trough, which comprises: deposition of a layer reflecting infrared radiation consisting of a high-melting metal on a heated receiver substrate of a suitable material; annealing under the same temperature and pressure conditions as the deposition of the reflecting layer; deposition on the high-melting metal of one or more layers of metal-ceramic composite materials (CERMET), wherein the metal is W and the ceramic matrix is YPSZ (“Yttria-Partially Stabilized Zirconia”); deposition on the cermet of an antireflection layer; annealing under the same temperature and pressure conditions as the depositions of the cermet and antireflection layers.
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