JPS5476446A - Production of selectively absorbing membrane - Google Patents

Production of selectively absorbing membrane

Info

Publication number
JPS5476446A
JPS5476446A JP14366677A JP14366677A JPS5476446A JP S5476446 A JPS5476446 A JP S5476446A JP 14366677 A JP14366677 A JP 14366677A JP 14366677 A JP14366677 A JP 14366677A JP S5476446 A JPS5476446 A JP S5476446A
Authority
JP
Japan
Prior art keywords
soln
persulfate
caustic alkali
contg
mol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14366677A
Other languages
Japanese (ja)
Other versions
JPS5621352B2 (en
Inventor
Hiroshi Matsuoka
Nobuo Uozu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP14366677A priority Critical patent/JPS5476446A/en
Publication of JPS5476446A publication Critical patent/JPS5476446A/en
Publication of JPS5621352B2 publication Critical patent/JPS5621352B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE: To cheaply produce a good membrane for selectively absorbing solar heat by dipping a copper substrate whose surface has been smoothed by polishing, in a mixed aq. soln. contg. a caustic alkali and a persulfate in a specific concn. ratio under specific conditons.
CONSTITUTION: The surface of a copper substrate is uniformly smoothed by mechanical, electrolytic or chemical polishing, yet it is easy to polish the surface with metal abrasives, whereby copper atoms are uniformly arranged on the surface. The substrate is then dipped in a mixed aq. soln. contg. a caustic alkali and a persulfate satisfying the relation between the concn. of caustic alkali; x mol/l and that of persulfate; y mol/l represented by formula I. At this time, the relation between the soln. temp.; T°C and the dipping time; t min is as follows; T+13lnt-68≥0, T≤100 and T-To≥0 (To; room temp.). Thus, a selectively absrobing membrane can be obtd. having a sunleight absorptivity above 0.9 and a radiation rate bleow 0.1.
COPYRIGHT: (C)1979,JPO&Japio
JP14366677A 1977-11-30 1977-11-30 Production of selectively absorbing membrane Granted JPS5476446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14366677A JPS5476446A (en) 1977-11-30 1977-11-30 Production of selectively absorbing membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14366677A JPS5476446A (en) 1977-11-30 1977-11-30 Production of selectively absorbing membrane

Publications (2)

Publication Number Publication Date
JPS5476446A true JPS5476446A (en) 1979-06-19
JPS5621352B2 JPS5621352B2 (en) 1981-05-19

Family

ID=15344100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14366677A Granted JPS5476446A (en) 1977-11-30 1977-11-30 Production of selectively absorbing membrane

Country Status (1)

Country Link
JP (1) JPS5476446A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6487147A (en) * 1987-09-30 1989-03-31 Nippon Mining Co Polishing agent for chemical semiconductor
WO2009114281A3 (en) * 2008-03-14 2009-11-12 Miasole Smoothing a metallic substrate for a solar cell
US8536054B2 (en) 2008-01-18 2013-09-17 Miasole Laser polishing of a solar cell substrate
US8586398B2 (en) 2008-01-18 2013-11-19 Miasole Sodium-incorporation in solar cell substrates and contacts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6111257U (en) * 1984-06-26 1986-01-23 住友電装株式会社 slow acting fuse

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258025A (en) * 1975-11-10 1977-05-13 Mitsubishi Heavy Ind Ltd Process for treating selective absorption surface

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258025A (en) * 1975-11-10 1977-05-13 Mitsubishi Heavy Ind Ltd Process for treating selective absorption surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6487147A (en) * 1987-09-30 1989-03-31 Nippon Mining Co Polishing agent for chemical semiconductor
US8536054B2 (en) 2008-01-18 2013-09-17 Miasole Laser polishing of a solar cell substrate
US8586398B2 (en) 2008-01-18 2013-11-19 Miasole Sodium-incorporation in solar cell substrates and contacts
WO2009114281A3 (en) * 2008-03-14 2009-11-12 Miasole Smoothing a metallic substrate for a solar cell

Also Published As

Publication number Publication date
JPS5621352B2 (en) 1981-05-19

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