JPS62182553A - Manufacture of solar heat absorbing body - Google Patents
Manufacture of solar heat absorbing bodyInfo
- Publication number
- JPS62182553A JPS62182553A JP61021680A JP2168086A JPS62182553A JP S62182553 A JPS62182553 A JP S62182553A JP 61021680 A JP61021680 A JP 61021680A JP 2168086 A JP2168086 A JP 2168086A JP S62182553 A JPS62182553 A JP S62182553A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- solution
- base material
- metal
- plating
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000243 solution Substances 0.000 claims abstract description 17
- 238000007747 plating Methods 0.000 claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000010935 stainless steel Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims abstract description 3
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000002500 ions Chemical class 0.000 claims abstract 2
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 230000003647 oxidation Effects 0.000 claims description 5
- 239000003929 acidic solution Substances 0.000 claims description 4
- 150000002978 peroxides Chemical class 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 8
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 239000000470 constituent Substances 0.000 abstract description 4
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 4
- 239000011790 ferrous sulphate Substances 0.000 abstract description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 4
- 150000001450 anions Chemical class 0.000 abstract description 3
- -1 salt peroxide Chemical class 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 3
- 239000002131 composite material Substances 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000012501 ammonium carbonate Nutrition 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000532 Deoxidized steel Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、安価で処理の容易な集熱効率の高い太陽熱吸
収体の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of manufacturing a solar heat absorber that is inexpensive, easy to process, and has high heat collection efficiency.
従来技術
太陽熱利用分野は、新エネルギーの１つとして大きな期
待を集めて久しく原油価格の変動等による影響を受けな
がらも徐々に発展しつつある。中でも日射条件が悪く、
且つ外気温の低い冬季の需要を満足する高性能の真空管
式ソーラーコレクターは、今後益々普及するものと予想
される。一般に真空管式ソーラーコレクターは、真空断
熱と合わせて効率良く太陽熱を集熱するために可視光領
域において低反射率（高吸収率）で、赤外光領域におい
て高反射率（低放射率）の選択吸収膜を表面に具備した
太陽熱吸収体を有している。BACKGROUND OF THE INVENTION The field of solar thermal utilization has long attracted great expectations as a new form of energy, and has been gradually developing despite being affected by fluctuations in crude oil prices. Among them, the solar radiation conditions are bad,
In addition, high-performance vacuum tube solar collectors that meet the demand during winter when outside temperatures are low are expected to become increasingly popular in the future. In general, vacuum tube solar collectors are selected to have low reflectance (high absorption rate) in the visible light region and high reflectance (low emissivity) in the infrared light region in order to efficiently collect solar heat in addition to vacuum insulation. It has a solar heat absorber with an absorption film on its surface.
従来、斯る選択吸収膜を表面に具備する太陽熱吸収体に
は■アルミニウム基板の電解着色法■銅基板の黒色メッ
キ法■ステンレス基板の化成処理法等が利用されてきた
。しかしながら■は、基板が高価であること、■はメッ
キ処理のコスＩ・が高価であること■は集熱特性が■■
に比べ劣るという問題があった。銅基板の場合、高価な
黒色クロムメッキの他に化成処理により酸化銅を形成す
ることも可能であるが、耐熱性が２５０℃以下であり、
真空管式ソーラーコレクターのように製造工程で４００
℃前後のベーキングが必要とされる場合は使用できない
。またステンレス鋼には、化成処理法より比較的集熱特
性の優れた電解酸化法があるが、処理液が高価で処理時
間が長いため黒色クロムメッキと同様高価になる。さら
に鉄基板を利用したものでは、高温アルカリ溶液中に浸
漬して四三酸化鉄を主成分とする選択吸収膜を形成する
方法があり、これは安価で処理も容易であるが、膜厚制
御が困難で厚膜になりやすく一般に放射率が高く集熱特
性が悪かった。Hitherto, methods such as electrolytic coloring of aluminum substrates, black plating of copper substrates, and chemical conversion treatment of stainless steel substrates have been used for solar heat absorbers having such selective absorption films on their surfaces. However, ■ is that the board is expensive, ■ is that the cost of plating is expensive, and ■ is that the heat collection properties are poor.
There was a problem that it was inferior to. In the case of copper substrates, in addition to expensive black chrome plating, it is also possible to form copper oxide through chemical conversion treatment, but the heat resistance is 250°C or less,
400 in the manufacturing process like a vacuum tube solar collector
Cannot be used if baking around ℃ is required. Furthermore, for stainless steel, there is an electrolytic oxidation method which has comparatively better heat collecting properties than the chemical conversion treatment method, but the treatment liquid is expensive and the treatment time is long, making it as expensive as black chrome plating. Furthermore, when using an iron substrate, there is a method of immersing it in a high-temperature alkaline solution to form a selective absorption film whose main component is triiron tetroxide. It was difficult to use, tended to be a thick film, and generally had high emissivity and poor heat collection characteristics.
発明の目的
本発明は、上記問題点に鑑みなされたもので集熱特性に
優れた太陽熱吸収体を安価で部属に製造する方法を提供
することを目的とするものである。OBJECTS OF THE INVENTION The present invention was devised in view of the above-mentioned problems, and an object of the present invention is to provide a method for manufacturing a solar heat absorber having excellent heat collecting characteristics at low cost.
発明の構成
本発明は、吸収体の基材の材質として好適な銅を主成分
とする金属もしくはステンレス鋼からなる基材を用いて
、安価に耐熱性及び集熱特性に優れた選択吸収膜を形成
するため基材に鉄メッキをしてなるもので、すなわち銅
を主成分とする金属もしくはステンレス鋼からなる基材
の表面に鉄メッキを施した後、酸性溶液中で該基材を陽
極として電解酸化し、表面に選択吸収膜を形成すること
を特徴とする。Structure of the Invention The present invention provides a selective absorption film that is inexpensive and has excellent heat resistance and heat collection properties by using a base material made of copper-based metal or stainless steel, which is suitable as the base material of an absorber. In other words, after iron plating is applied to the surface of a base material made of copper-based metal or stainless steel, the base material is used as an anode in an acidic solution. It is characterized by electrolytic oxidation to form a selective absorption film on the surface.
次に本発明を具体的に説明する。太陽熱吸収体の基材と
しては、耐蝕性に優れた銅を主成分とする金属もしくは
ステンレス鋼を用いる。基材の表面仕上げとしては、鏡
面仕上げが望ましいが冷間圧延仕上げでもよい。次にこ
の基材表面に鉄メッキを施すが、ここで用いるメッキ液
は、基材表面に均一に鉄メッキ層が形成できるものであ
ればよく、例えば硫酸第一鉄を主成分とする液が好適で
ある。その後鉄メッキを施した基材を陽極として電解酸
化し、表面に選択吸収膜、すなわち四三酸化鉄を主成分
とする鉄酸化物もしくはその鉄酸化物と電解度を構成す
る金属元素、酸化物の複合体を形成する。この場合の電
解液としては、陰イオンに金属の錯イオンをもち、且つ
鉄よりイオン化傾向の大きな金属を陽イオンとしてもつ
ような酸性酸化剤（例えば重クロム酸カリウム等の重ク
ロム酸塩あるいは過マンガン酸塩等）の単独液及び混合
液が好ましい。あるいは上記以外にも鉄よりイオン化傾
向の大きな金属を陽イオンとしてもつような酸性酸化剤
（例えば硝酸塩、亜硝酸塩、過酸化塩等）の単独液及び
混合液を用いることもできる。このように電解液に酸性
酸化剤を用いると選択吸収膜にＦｅ２Ｏ３の割合が少な
くなり、Ｆｅ３Ｏ４が電解液中の陰イオン構成金属（あ
るいは酸化物）と混在して吸収率が高くなる。また鉄よ
りイオン化傾向の大きな金属を含む酸化剤は、陽極の鉄
の溶出を抑制するため陰イオン構成金属の陽極上への反
応を促進し、耐候性のある選択吸収膜を形成するが、一
方鉄よりイオン化傾向の小さな金属を含む酸化剤を用い
ると陽極の鉄基板の溶解が促進されるだけでいわゆる電
解研摩になり所望の選択吸収膜が得られない。Next, the present invention will be specifically explained. As the base material of the solar heat absorber, a metal mainly composed of copper or stainless steel, which has excellent corrosion resistance, is used. As for the surface finish of the base material, a mirror finish is desirable, but a cold rolling finish may also be used. Next, iron plating is applied to the surface of this base material. The plating solution used here may be any one that can form an iron plating layer uniformly on the surface of the base material. For example, a solution containing ferrous sulfate as a main component may be used. suitable. After that, electrolytic oxidation is performed using the iron-plated base material as an anode, and a selective absorption film is formed on the surface, that is, iron oxide whose main component is triiron tetroxide, or metal elements and oxides that constitute the iron oxide and electrolyte. form a complex of The electrolyte in this case should be an acidic oxidizing agent that has a metal complex ion as an anion and a metal that has a greater ionization tendency than iron as a cation (for example, a dichromate such as potassium dichromate or A single solution or a mixed solution of manganate, etc.) is preferred. Alternatively, in addition to the above, it is also possible to use a single solution or a mixed solution of an acidic oxidizing agent (for example, nitrate, nitrite, peroxide, etc.) having a metal having a greater ionization tendency than iron as a cation. When an acidic oxidizing agent is used in the electrolytic solution in this way, the proportion of Fe2O3 in the selective absorption membrane is reduced, and Fe3O4 is mixed with the anion-constituting metal (or oxide) in the electrolytic solution, increasing the absorption rate. In addition, an oxidizing agent containing a metal with a greater ionization tendency than iron promotes the reaction of the anionic constituent metal onto the anode in order to suppress the elution of iron from the anode, forming a selective absorption film with weather resistance. If an oxidizing agent containing a metal having a smaller ionization tendency than iron is used, the dissolution of the iron substrate of the anode will only be promoted, resulting in so-called electrolytic polishing, and the desired selective absorption film will not be obtained.
実施例１ 以下に本発明の実施例を示す。Example 1 Examples of the present invention are shown below.
リン脱酸鋼管（Ｃ１２２０Ｔ、φ９０Ｘ ｔＯ，４Ｘ又
５００）をトリクレン脱脂後、硫酸第一鉄２４０ｇ／ｌ
の溶液中に浸漬すると共にこの溶液中にステンレス鋼板
を配置して、リン脱酸鋼管を陰極、ステンレス鋼板を陽
極として溶液温度６０℃、電流密度ＩＯＡ／ｄ＋ｎ”の
条件下で５分電解処理して鉄メッキした。鉄メッキした
鋼管を水洗後、１５％重クロム酸カリウムの電解液中で
陽極とし、陰極に鉄板を用いて溶液温度７５℃、電流密
度６０Ａ／ｄｍ”の条件下で１０分電解酸化した後、十
分水洗いし乾燥させた。After degreasing phosphorus deoxidized steel pipe (C1220T, φ90X tO, 4X or 500) with trichlene, ferrous sulfate 240g/l
At the same time, a stainless steel plate was placed in this solution and subjected to electrolytic treatment for 5 minutes at a solution temperature of 60°C and a current density of IOA/d+n'' using the phosphorus deoxidizing steel tube as a cathode and the stainless steel plate as an anode. After washing the iron-plated steel pipe with water, it was heated in a 15% potassium dichromate electrolyte as an anode and an iron plate as a cathode at a solution temperature of 75°C and a current density of 60 A/dm for 10 minutes. After electrolytic oxidation, it was thoroughly washed with water and dried.
このようにして製造した吸収体の受光面上に形成された
皮膜の分光反射スペクトルを測定し、結６一
果を第１図に示した。得られた吸収体の選択吸収膜につ
いて図面に示した分光反射スペクＩ・ル曲線に基づいて
、太陽エネルギーの吸収率αを、又ブランク（Ｐｌａｎ
ｃｋ）の式により求められる黒体放射輝度に基づいて放
射率εを算出した。この結果、α及びε値は、夫々０．
９３及び０．１０という高い値を示した。The spectral reflection spectrum of the film formed on the light-receiving surface of the absorber thus produced was measured, and the results are shown in FIG. Based on the spectral reflection spectral curve shown in the drawing for the selective absorption film of the obtained absorber, the absorption rate α of solar energy was determined as well as the blank (Plan
The emissivity ε was calculated based on the blackbody radiance determined by the equation (ck). As a result, the α and ε values are respectively 0.
It showed high values of 93 and 0.10.
実施例２
フェライト系ステンレス鋼管（５ＯＳ４４４ 、φ９０
×ｔＯ，４×又５００）をトリクレン脱脂して電解研摩
した後、硫酸第一鉄１４０ｇ＃、ホウ酸２５ｇ７文、炭
酸アンモニウム１８０ｇ＃！の溶液中に浸漬すると共に
この溶液中に鉄管を配置して、ステンレス鋼管を陰極、
鉄管を陽極にして溶液温度６０℃、電流密度ＩＯＡ、／
ｄｍ２の条件下で５分電解処理して鉄メッキした。Example 2 Ferritic stainless steel pipe (5OS444, φ90
xtO, 4 x 500) after trichlene degreasing and electrolytic polishing, 140 g of ferrous sulfate, 25 g of boric acid, 7 g of ammonium carbonate, 180 g of ammonium carbonate! By immersing the stainless steel tube in a solution of
Using an iron tube as an anode, the solution temperature is 60℃, the current density is IOA, /
Iron plating was performed by electrolytic treatment for 5 minutes under dm2 conditions.
鉄メッキしたステンレス鋼管を水洗後、１５％重クロム
酸カリウムの電解液中で陽極とし、陰極に鉄管を用いて
溶液温度７５℃、電流密度６０Ａ／ｄｒｎ”の条件下で
１０分電解酸化した後、十分水洗いし乾燥させた。After washing the iron-plated stainless steel pipe with water, it was electrolytically oxidized for 10 minutes at a solution temperature of 75°C and a current density of 60 A/drn, using the iron pipe as the anode and cathode in a 15% potassium dichromate electrolyte. , thoroughly washed with water and dried.
このようにして製造した吸収体の受光面上に形成された
皮膜の分光反射スペクトルを測定し、結果を第２図に示
した。得られた吸収体の選択吸収膜の太陽エネルギーの
吸収率αと放射率εを、実施例と同様に算出した結果、
α及びε値は、夫々０゜９０及び０．０８という高い値
を示した。The spectral reflection spectrum of the film formed on the light-receiving surface of the absorber thus manufactured was measured, and the results are shown in FIG. As a result of calculating the solar energy absorption rate α and emissivity ε of the selective absorption film of the obtained absorber in the same manner as in the example,
The α and ε values showed high values of 0°90 and 0.08, respectively.
発明の効果
以上のように本発明の太陽熱吸収体の製造方法は、集熱
管材質として適している銅を主成分とする金属もしくは
ステンレス鋼からなる基材の表面に鉄メッキを施すこと
によって耐熱性、集熱特性に優れた選択吸収膜を安価で
簡便に形成できるものである。Effects of the Invention As described above, the method for manufacturing a solar heat absorber of the present invention improves heat resistance by applying iron plating to the surface of a base material made of copper-based metal or stainless steel, which is suitable as a heat collecting tube material. , a selective absorption film with excellent heat collecting properties can be formed easily and inexpensively.
第１図は、本発明の実施例１の方法により得られる太陽
熱吸収体の分光反射スペクトル曲線図である。
第２図は、本発明の実施例２の方法により得られる太陽
熱吸収体の分光反射スペクトル曲線図である。
特許出願人 日本電気硝子株式会社
代表者 岸 １）清 作
匣 龜 硲FIG. 1 is a spectral reflection spectrum curve diagram of a solar heat absorber obtained by the method of Example 1 of the present invention. FIG. 2 is a spectral reflection spectrum curve diagram of a solar heat absorber obtained by the method of Example 2 of the present invention. Patent Applicant Nippon Electric Glass Co., Ltd. Representative Kishi 1) Kiyoshi Sakuho Kuwa
Claims (3)
なる基材の表面に鉄メッキを施した後、酸性溶液中で該
基材を陽極として電解酸化し、表面に選択吸収膜を形成
することを特徴とする太陽熱吸収体の製造方法。(1) After applying iron plating to the surface of a base material made of copper-based metal or stainless steel, electrolytic oxidation is performed using the base material as an anode in an acidic solution to form a selective absorption film on the surface. A method for manufacturing a solar heat absorber characterized by:
属の錯イオンを含む酸化剤の単独液及び混合液から成る
ことを特徴とする特許請求の範囲第１項記載の太陽熱吸
収体の製造方法。(2) The solar heat absorber according to claim 1, wherein the acidic solution consists of a single solution or a mixed solution of an oxidizing agent containing complex ions of metals such as dichromate and permanganate. manufacturing method.
剤の単独液及び混合液から成ることを特徴とする特許請
求の範囲第１項記載の太陽熱吸収体の製造方法。(3) The method for manufacturing a solar heat absorber according to claim 1, wherein the acidic solution comprises a single solution or a mixed solution of an oxidizing agent such as a nitrate, a nitrite, or a peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021680A JPS62182553A (en) | 1986-02-03 | 1986-02-03 | Manufacture of solar heat absorbing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021680A JPS62182553A (en) | 1986-02-03 | 1986-02-03 | Manufacture of solar heat absorbing body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62182553A true JPS62182553A (en) | 1987-08-10 |
Family
ID=12061775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61021680A Pending JPS62182553A (en) | 1986-02-03 | 1986-02-03 | Manufacture of solar heat absorbing body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62182553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013077363A1 (en) | 2011-11-22 | 2013-05-30 | 新日鐵住金株式会社 | Ferritic heat-resistant steel, and manufacturing method for same |
-
1986
- 1986-02-03 JP JP61021680A patent/JPS62182553A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013077363A1 (en) | 2011-11-22 | 2013-05-30 | 新日鐵住金株式会社 | Ferritic heat-resistant steel, and manufacturing method for same |
| US9657383B2 (en) | 2011-11-22 | 2017-05-23 | Nippon Steel & Sumitomo Metal Corporation | Heat resistant ferritic steel and method for producing the same |
| US10385438B2 (en) | 2011-11-22 | 2019-08-20 | Nippon Steel Corporation | Heat resistant ferritic steel and method for producing the same |
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