JP2019085628A - Nickel copper alloy preventing adhesion of marine organism, and manufacturing method therefor - Google Patents
Nickel copper alloy preventing adhesion of marine organism, and manufacturing method therefor Download PDFInfo
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 59
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010949 copper Substances 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 241000195493 Cryptophyta Species 0.000 abstract description 15
- 229910052790 beryllium Inorganic materials 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 239000000463 material Substances 0.000 description 16
- 235000015170 shellfish Nutrition 0.000 description 12
- 229910000570 Cupronickel Inorganic materials 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 241000238586 Cirripedia Species 0.000 description 2
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 241000270322 Lepidosauria Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000936 Naval brass Inorganic materials 0.000 description 1
- 229910018054 Ni-Cu Inorganic materials 0.000 description 1
- 229910018481 Ni—Cu Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Abstract
Description
本発明は、海洋生物の付着を防止可能な、海中での使用に適したニッケル銅合金及びその製造方法に関する。 The present invention relates to a nickel-copper alloy suitable for use in the sea, which can prevent the adhesion of marine organisms, and a method for producing the same.
発電プラントや化学プラント等では、例えば、海水を冷却水として使用するため、海中に配管等を浸漬させて取水している。この配管等には、海中の貝類や藻類等の生物（即ち、海洋生物）が付着するため、これらの除去作業を定期的に行っており、多大な労力と費用を費やしている。
また、海水を冷却水として使用する熱交換器の管板の材料に、腐食の防止を目的として、ネーバル黄銅、チタン、白銅（キュプロニッケル：Ｃｕｐｒｏｎｉｃｋｅｌ）、ステンレス鋼を使用しているが、これらの材料は海洋生物の付着を防止する機能を有しない。
In a power plant, a chemical plant, etc., for example, in order to use seawater as a cooling water, piping etc. are immersed in the sea and are taken. In this piping and the like, since organisms such as shellfish and algae in the sea adhere (i.e., marine organisms), these removing operations are performed regularly, and a great deal of labor and cost is spent.
In addition, Naval brass, titanium, copper (Cupro-nickel: Cupronickel), stainless steel are used as the material of heat exchanger tube plates that use seawater as cooling water for the purpose of preventing corrosion. The material does not have the function of preventing the adhesion of marine organisms.
そこで、特許文献１には、海水と接触する耐食面をベリリウム銅合金（ＢｅＣｕ）にすることが提案されている。具体的には、ＢｅＣｕ中のＢｅの量が０．０１〜１５．０原子％と記載され、更に、Ｂｅの他に、Ｓｉ、Ｔｉ、Ｚｒ、Ｚｎ、Ａｌ、Ｓｎ、Ｐｂ、Ｍｎ、Ｃｒ、Ｆｅ、Ｃｏ、Ｎｉ、Ａｓ、Ｓｂのうちの一種以上を含有してもよいことが記載されている。
また、特許文献２には、Ｂｅ：０．２〜１．０質量％、Ｎｉ：１．４〜２．２質量％、残部Ｃｕ及び不可避的不純物からなるベリリウム銅合金が開示されている。
Therefore, Patent Document 1 proposes making a corrosion resistant surface in contact with seawater with a beryllium copper alloy (BeCu). Specifically, the amount of Be in BeCu is described as 0.01 to 15.0 atomic%, and in addition to Be, Si, Ti, Zr, Zn, Al, Sn, Pb, Mn, Cr, It is described that one or more of Fe, Co, Ni, As and Sb may be contained.
Further, Patent Document 2 discloses a beryllium copper alloy comprising Be: 0.2 to 1.0% by mass, Ni: 1.4 to 2.2% by mass, the balance Cu and unavoidable impurities.
しかしながら、特許文献１の技術では、ＢｅＣｕ中のＢｅの量の範囲が極めて広く（最小値に対する最大値が１５００倍と極めて大きく）、実際の操業では、再度の実験を行ってＢｅの量を決める必要がある。
また、ＢｅＣｕ中にＮｉを入れることも記載されているが、量が未定である。
また、特許文献２の技術では、ＢｅＣｕがＢｅを０．２〜１．０質量％含むことが記載されているが、Ｂｅは、その比重が約１．８と小さく、また、比較的高価な金属であることから、必要以上のＢｅを使用しないことが好ましい。
However, in the technique of Patent Document 1, the range of the amount of Be in BeCu is extremely wide (the maximum value for the minimum value is extremely large such as 1500 times), and in actual operation, the experiment is repeated to determine the amount of Be. There is a need.
Moreover, although putting Ni into BeCu is also described, the quantity is undecided.
Further, the technology of Patent Document 2 describes that BeCu contains 0.2 to 1.0% by mass of Be, but Be has a small specific gravity of about 1.8 and is relatively expensive. Since it is metal, it is preferable not to use more Be than necessary.
本発明はかかる事情に鑑みてなされたもので、実際に実験を行って、ベリリウムの量を制限し、従来よりも貝類や藻類等の生物の付着を抑制、更には防止可能な海洋生物の付着を防止したニッケル銅合金及びその製造方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and experiments are actually carried out to limit the amount of beryllium, and the adhesion of marine organisms such as shellfish and algae can be suppressed and prevented more than before. And a method of manufacturing the same.
前記目的に沿う第１の発明に係る海洋生物の付着を防止したニッケル銅合金は、Ｎｉを８．０質量％以上２０．０質量％以下含む銅合金に、Ｂｅを０．０２質量％以上１．８質量％以下含ませた。 The nickel copper alloy in which adhesion of marine organisms according to the first invention in accordance with the first object is prevented is 0.02 mass% or more of Be to a copper alloy containing 8.0 mass% or more and 20.0 mass% or less of Ni. .8 mass% or less was included.
第１の発明に係る海洋生物の付着を防止したニッケル銅合金において、前記銅合金は、Ｎｉを９．０質量％以上１１．０質量％以下、Ｍｎを１．０質量％以下、Ｆｅを１．０質量％以上１．８質量％以下、Ｚｎを０．５０質量％以下、Ｐｂを０．０２質量％以下、含み、残部がＣｕ及び不可避的不純物からなることが好ましい。 In the nickel-copper alloy in which adhesion of marine organisms according to the first invention is prevented, the copper alloy contains not less than 9.0% by mass and not more than 11.0% by mass of Ni, not more than 1.0% by mass of Mn, and 1 of Fe. It is preferable that 0 mass% or more and 1.8 mass% or less, Zn be 0.50 mass% or less, Pb be 0.02 mass% or less, and the balance be Cu and an unavoidable impurity.
前記目的に沿う第２の発明に係る海洋生物の付着を防止したニッケル銅合金の製造方法は、Ｂｅの含有量が０．０２質量％以上１．８質量％以下となるように、Ｎｉを８．０質量％以上２０．０質量％以下含む銅合金の溶湯に前記Ｂｅを添加して凝固させる。 The method for producing a nickel-copper alloy in which adhesion of marine organisms according to the second invention according to the second object is prevented according to the above object is 8 Ni so that the content of Be is 0.02 mass% or more and 1.8 mass% or less. The Be is added to and solidified in a copper alloy melt containing 0 mass% or more and 20.0 mass% or less.
第２の発明に係る海洋生物の付着を防止したニッケル銅合金の製造方法において、前記銅合金は、Ｎｉを９．０質量％以上１１．０質量％以下、Ｍｎを１．０質量％以下、Ｆｅを１．０質量％以上１．８質量％以下、Ｚｎを０．５０質量％以下、Ｐｂを０．０２質量％以下、含み、残部がＣｕ及び不可避的不純物からなることが好ましい。 In the method for producing a nickel-copper alloy according to the second aspect, wherein adhesion of marine life is prevented, the copper alloy contains 9.0% by mass or more and 11.0% by mass or less of Ni, and 1.0% by mass or less of Mn. It is preferable that 1.0% by mass or more and 1.8% by mass or less of Fe, 0.50% by mass or less of Zn, and 0.02% by mass or less of Pb, and the balance be Cu and unavoidable impurities.
本発明に係る海洋生物の付着を防止したニッケル銅合金及びその製造方法は、Ｎｉを８．０質量％以上２０．０質量％以下含む銅合金にＢｅが添加され、Ｂｅの含有量を０．０２質量％以上１．８質量％以下にするので、従来よりも貝類や藻類等の生物の付着を抑制、更には防止できる。これにより、従来よりも、配管等のメンテナンス作業を行う頻度を低減できる。 In the nickel-copper alloy which prevents the adhesion of marine organisms according to the present invention and the method for producing the same, Be is added to a copper alloy containing 8.0% by mass or more and 20.0% by mass or less of Ni. Since the content is at least 02 mass% and not more than 1.8 mass%, adhesion of organisms such as shellfish and algae can be suppressed and prevented more than in the past. Thereby, the frequency of performing maintenance work such as piping can be reduced compared to the conventional case.
続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態につき説明し、本発明の理解に供する。
本発明の一実施の形態に係る海洋生物の付着を防止したニッケル銅合金（以下、単にニッケル銅合金ともいう）は、従来よりも貝類や藻類等の生物の付着を抑制、更には防止可能な、海中での使用に適した材料である。以下、詳しく説明する。
Next, embodiments of the present invention will be described with reference to the attached drawings for understanding of the present invention.
The nickel-copper alloy (hereinafter, also simply referred to as a nickel-copper alloy) that prevents the adhesion of marine organisms according to an embodiment of the present invention can suppress or even prevent the adhesion of organisms such as shellfish and algae than ever before. , A material suitable for use in the sea. Details will be described below.
ニッケル銅合金（Ｎｉ−Ｃｕ合金）は、Ｎｉ（ニッケル）を含む銅合金に、Ｂｅ（ベリリウム）を含ませたものである。
銅合金は、Ｎｉを８．０質量％以上２０．０質量％以下含有する合金であり、例えば、白銅である。具体的には、Ｎｉを９．０質量％以上１１．０質量％以下、Ｍｎ（マンガン）を１．０質量％以下（下限は、０質量％でもよいが、実際には０．０２質量％程度、上限は、０．５０質量％が好ましく、更には０．２０質量％が好ましい）、Ｆｅ（鉄）を１．０質量％以上１．８質量％以下、Ｚｎ（亜鉛）を０．５０質量％以下（０質量％でもよい）、Ｐｂ（鉛）を０．０２質量％以下（０質量％でもよい）、含み、残部がＣｕ及び不可避的不純物からなる。なお、この白銅をＣｕ分析した場合、Ｃｕ、Ｆｅ、Ｍｎ、及び、Ｎｉの合計量は９９．５質量％以上である。
The nickel copper alloy (Ni-Cu alloy) is a copper alloy containing Ni (nickel) and Be (beryllium).
The copper alloy is an alloy containing 8.0% by mass or more and 20.0% by mass or less of Ni, and is, for example, white copper. Specifically, Ni is 9.0% by mass or more and 11.0% by mass or less, Mn (manganese) is 1.0% by mass or less (the lower limit may be 0% by mass, but it is actually 0.02% by mass) The upper limit is preferably 0.50% by mass, more preferably 0.20% by mass), Fe (iron) is 1.0% by mass or more and 1.8% by mass or less, Zn (zinc) is 0.50 It contains not more than mass% (may be 0 mass%), not more than 0.02 mass% (may be 0 mass%) of Pb (lead), and the balance consists of Cu and unavoidable impurities. In addition, when Cu analysis of this white copper, the total amount of Cu, Fe, Mn, and Ni is 99.5 mass% or more.
ニッケル銅合金が含有するＢｅ量は、０．０２質量％以上１．８質量％以下である（即ち、ニッケル銅合金中のＢｅを除いた量が上記した銅合金の量となる）。
ここで、Ｂｅの含有量が０．０２質量％未満の場合、Ｂｅの添加による効果が小さ過ぎて、貝類や藻類等の生物が付着し易くなる。一方、Ｂｅの含有量が１．８質量％超の場合、本発明者らが試験を行った知見によると、貝類や藻類等の生物が付着し易くなった。
従って、ニッケル銅合金中のＢｅ量を、０．０２質量％以上１．８質量％以下としたが、下限を０．０３質量％、上限を０．１０質量％、更には０．０５質量％とすることが好ましい。
The amount of Be contained in the nickel copper alloy is 0.02% by mass or more and 1.8% by mass or less (that is, the amount excluding the Be in the nickel copper alloy is the amount of the above-described copper alloy).
Here, when the content of Be is less than 0.02 mass%, the effect of the addition of Be is too small, and organisms such as shellfish and algae are easily attached. On the other hand, when the content of Be is more than 1.8% by mass, organisms such as shellfish and algae easily adhere, according to the findings obtained by the present inventors.
Therefore, the amount of Be in the nickel copper alloy is set to 0.02 mass% or more and 1.8 mass% or less, but the lower limit is 0.03 mass%, the upper limit is 0.10 mass%, and further 0.05 mass%. It is preferable to
上記したニッケル銅合金は、使用環境に応じて種々の形状に加工し使用できる。
例えば、鋳造加工や塑性加工を行い、継手（フランジやエルボ）、配管、線材等の部品（構造物）に加工して使用できる。
また、薄板材（例えば、厚さが４ｍｍ以下程度）に加工し、この薄板材をそのまま、又は、他の板材に貼り合わせて、使用することもできる。
更に、例えば、電気めっきや溶融めっき等を用いて他の材料にめっきしたり、また、溶射等を用いて他の材料に被覆したりして、使用することもできる。
The above-mentioned nickel-copper alloy can be processed and used in various shapes according to the use environment.
For example, it can be used by performing casting processing or plastic processing and processing into parts (structures) such as joints (flanges and elbows), pipes, wires and the like.
Moreover, it can be processed into a thin plate material (for example, about 4 mm or less in thickness), and this thin plate material can be used as it is or pasted to another plate material.
Furthermore, for example, other materials may be plated using electroplating, hot-dip plating, etc., or may be coated with other materials using thermal spraying etc.
続いて、本発明の一実施の形態に係る海洋生物の付着を防止したニッケル銅合金の製造方法について説明する。
ニッケル銅合金は、Ｂｅの含有量が０．０２質量％以上１．８質量％以下（下限が０．０３質量％、上限が０．１０質量％、更には０．０５質量％）となるように、Ｎｉを含む銅合金の溶湯にＢｅを添加して撹拌した後、凝固させることで得られる。
なお、前記したように、銅合金には、Ｎｉを８．０質量％以上２０．０質量％以下含む合金、例えば白銅を使用できる。
Then, the manufacturing method of the nickel copper alloy which prevented adhesion of the marine life concerning one embodiment of the present invention is explained.
In the nickel copper alloy, the content of Be is 0.02 mass% or more and 1.8 mass% or less (the lower limit is 0.03 mass%, the upper limit is 0.10 mass%, and further 0.05 mass%). After adding and stirring Be to the molten metal of the copper alloy containing Ni, it is obtained by solidifying.
As described above, as the copper alloy, an alloy containing 8.0% by mass or more and 20.0% by mass or less of Ni, for example, copper can be used.
この銅合金は、上記した組成となるように各金属を秤量し、溶解炉で溶解することで得られる。
使用にあっては、溶解炉で溶解させたニッケル銅合金（Ｂｅ含有）を、鋳型へ注入して冷却し凝固させたり、また、凝固させた後に塑性加工を施したりすることができる。
This copper alloy is obtained by measuring each metal so that it may become the above-mentioned composition, and melt | dissolving with a melting furnace.
In use, a nickel-copper alloy (containing Be) melted in a melting furnace can be poured into a mold and allowed to cool and solidify, or can be subjected to plastic processing after solidifying.
次に、本発明の作用効果を確認するために行った実施例について説明する。
まず、生物の付着状況を確認するため、生物繁茂期の７月初旬より数ヶ月間、条件の異なる海中に、図１（Ａ）に示す試験材（従来例）と、図１（Ｂ）に示す試験片（実施例１）を、それぞれ浸漬させた結果について説明する。なお、図１（Ａ）に示す試験材は、鉄（ＳＳ４００）、ステンレス（ＳＵＳ３０４）、及び、銅（Ｃ１２２０）で構成され、図１（Ｂ）に示す試験片は、Ｎｉを含む銅合金に前記した構成の白銅（Ｎｉの含有量：１０．０質量％）を使用し、Ｂｅの含有量を０．０４質量％（誤差も含めると０．０３質量％〜０．０５質量％）にしたニッケル銅合金で構成されたものである。
Next, an example carried out to confirm the operation and effect of the present invention will be described.
First, in order to confirm the adhesion state of the organisms, the test material shown in FIG. 1 (A) (conventional example) and FIG. The results of immersion of the test pieces (Example 1) shown will be described. The test material shown in FIG. 1A is made of iron (SS400), stainless steel (SUS 304), and copper (C1220), and the test piece shown in FIG. 1B is a copper alloy containing Ni. Using the white copper (content of Ni: 10.0% by mass) of the above-mentioned constitution, the content of Be was made 0.04% by mass (0.03% by mass to 0.05% by mass including the error) It is composed of a nickel-copper alloy.
（試験１）
図１（Ａ）に示す試験材と図１（Ｂ）に示す試験片をそれぞれ、外海と河口の水が混じり合う湾内の海中に４ヶ月間浸漬させた。その結果を、以下に説明する。
試験材を構成する鉄の部分には、赤錆、土、藻類、及び、フジツボの付着が確認され、ステンレスと銅の各部分には、土、藻類、及び、フジツボの付着が確認された。
一方、ニッケル銅合金製の試験片には、貝類や藻類等の生物の付着がなかった。
(Test 1)
The test material shown in FIG. 1 (A) and the test piece shown in FIG. 1 (B) were each immersed for 4 months in the sea in the bay where the water of the open sea and the estuary were mixed. The results are described below.
The adhesion of rust, soil, algae, and barnacles was confirmed in the portion of iron constituting the test material, and the adhesion of soil, algae, and barnacles was confirmed in each portion of stainless steel and copper.
On the other hand, the test piece made of the nickel copper alloy did not have adhesion of organisms such as shellfish and algae.
（試験２）
図１（Ａ）に示す試験材と図１（Ｂ）に示す試験片をそれぞれ、港湾の海中に３ヶ月間浸漬させた。その結果を、以下に説明する。
試験材については、図２（Ａ）に示すように、その全体に管棲多毛類（エゾカサネカンザシ）が付着した。このエゾカサネカンザシは、円筒形の殻を造り、殻の口から鰓を出して呼吸し、また、餌をとるものであり、殻は石灰質で強固に付着するものである。
一方、試験片については、図２（Ｂ）に示すように、試験片が取付けられたロープに、上記した管棲多毛類が付着していたが、ニッケル銅合金製の試験片には、貝類や藻類等の生物の付着がなかった。
(Test 2)
The test material shown in FIG. 1 (A) and the test piece shown in FIG. 1 (B) were each immersed in the sea of the port for 3 months. The results are described below.
As for the test material, as shown in FIG. 2 (A), the tubercle moths (Ezo-kasane kanesasi) adhered to the whole. The lizard has a cylindrical shell, which breathes from the mouth of the shell and breathes, and takes food, and the shell is calcareous and adheres firmly.
On the other hand, with regard to the test piece, as shown in FIG. 2 (B), the above-described tubercladus was attached to the rope to which the test piece was attached, but in the test piece made of nickel copper alloy, shellfish And no adhesion of organisms such as algae.
続いて、冬の海中に、鉄（ＳＳ４００）製の板（比較例１）、前記した構成の白銅（Ｎｉの含有量：１０．０質量％）製の円盤（比較例２）、及び、ニッケル銅合金製の板（実施例２）を、それぞれ浸漬させた結果について、図３を参照しながら説明する。なお、ニッケル銅合金製の板は、Ｎｉを含む銅合金に前記した構成の白銅（Ｎｉの含有量：１０質量％）を使用し、Ｂｅの含有量を０．０４質量％（誤差も含めると０．０３質量％〜０．０５質量％）にしたニッケル銅合金で構成されている。
図３に示すように、鉄製の板（右端）については、その全体に貝類や藻類等の生物が付着した。また、白銅製の円盤（中央）については、鉄製の板よりも生物の付着を抑制できたが、部分的に付着が確認された。
一方、ニッケル銅合金製の板（左端）については、生物の付着がなかった。
Subsequently, in the winter sea, a plate (comparative example 1) made of iron (SS 400), a disc made of white copper (content of Ni: 10.0% by mass) of the above-mentioned constitution (comparative example 2), and nickel The results of immersing the copper alloy plate (Example 2) will be described with reference to FIG. In addition, the board made of nickel copper alloy uses the white copper (content of Ni: 10 mass%) of the above-mentioned composition to the copper alloy containing Ni, and the content of Be is 0.04 mass% (including an error) It is comprised with the nickel copper alloy made into 0.03 mass%-0.05 mass%).
As shown in FIG. 3, organisms such as shellfish and algae adhered to the whole of the iron plate (right end). In addition, with regard to the disc made of white copper (center), the adhesion of organisms could be suppressed more than the plate made of iron, but the adhesion was partially confirmed.
On the other hand, no biological attachment was found on the nickel copper alloy plate (left end).
更に、Ｂｅの含有量が１．８質量％以下のニッケル銅合金製の試験片についても、上記と同様の条件で試験を行ったが、上記した実施例１、２と同様、貝類や藻類等の生物の付着はなかった。しかし、Ｂｅの含有量が１．８質量％を超えたニッケル銅合金製の試験片については、貝類や藻類等の生物の付着が確認された。
以上のことから、本発明の海洋生物の付着を防止したニッケル銅合金及びその製造方法により、従来よりも貝類や藻類等の生物の付着を抑制、更には防止できることを確認できた。これにより、従来よりも、配管等のメンテナンス作業を行う頻度を低減できる。
Furthermore, although the test was performed under the same conditions as above for the test piece made of a nickel copper alloy having a content of Be of 1.8% by mass or less, shellfish, algae, etc. as in Examples 1 and 2 described above There was no attachment of organisms. However, with regard to a test piece made of a nickel-copper alloy in which the content of Be exceeds 1.8% by mass, adhesion of organisms such as shellfish and algae was confirmed.
From the above, it has been confirmed that adhesion of organisms such as shellfish and algae can be suppressed and further prevented by the nickel-copper alloy which prevents adhesion of marine organisms of the present invention and a method for producing the same. Thereby, the frequency of performing maintenance work such as piping can be reduced compared to the conventional case.
以上、本発明を、実施の形態を参照して説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。例えば、前記したそれぞれの実施の形態や変形例の一部又は全部を組合せて本発明の海洋生物の付着を防止したニッケル銅合金及びその製造方法を構成する場合も本発明の権利範囲に含まれる。
なお、前記実施の形態においては、Ｎｉを８．０質量％以上２０．０質量％以下含む銅合金として、白銅を用いた場合について説明したが、これに限定されるものではなく、例えば、Ｎｉを８．０質量％以上２０．０質量％以下含み、残部がＣｕ及び不可避的不純物からなる銅合金がある。
Although the present invention has been described above with reference to the embodiment, the present invention is not limited to the configuration described in the above-described embodiment, and the items described in the appended claims It also includes other embodiments and modifications that are considered within the scope. For example, a nickel-copper alloy in which adhesion of marine organisms of the present invention is prevented by combining some or all of the above-described embodiments and modifications is also included in the scope of the present invention. .
In addition, in the said embodiment, although the case where white copper was used as a copper alloy containing 8.0 mass% or more and 20.0 mass% or less was demonstrated, it is not limited to this, For example, Ni There is a copper alloy containing 8.0% by mass or more and 20.0% by mass or less, and the balance being Cu and unavoidable impurities.
Claims (4)
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| JPS60197833A (en) * | 1984-03-17 | 1985-10-07 | Ngk Insulators Ltd | Clad material consisting of iron or steel base metal and copper alloy material |
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