JPS6040979B2 - Metal materials for ornaments - Google Patents
Metal materials for ornamentsInfo
- Publication number
- JPS6040979B2 JPS6040979B2 JP16254081A JP16254081A JPS6040979B2 JP S6040979 B2 JPS6040979 B2 JP S6040979B2 JP 16254081 A JP16254081 A JP 16254081A JP 16254081 A JP16254081 A JP 16254081A JP S6040979 B2 JPS6040979 B2 JP S6040979B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- metal
- base
- decorative
- machinability
- 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.)
- Expired
Links
- 239000007769 metal material Substances 0.000 title claims description 11
- 239000000956 alloy Substances 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000010953 base metal Substances 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 239000011651 chromium Substances 0.000 description 5
- 239000010931 gold Substances 0.000 description 3
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 3
- 239000010956 nickel silver Substances 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 239000010944 silver (metal) Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 101150000971 SUS3 gene Proteins 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
Landscapes
- Eyeglasses (AREA)
- Laminated Bodies (AREA)
- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】
この発明は装飾品用金属材料に関し、Ｃｒ４〜２０％と
Ａｇ６％以下とを含むＮｉ基合金の表面をＲｈ層で被う
ことにより極めて耐食性ならびに切削性の優れた装飾用
金属材料を提供せんとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal material for decorative articles, which has extremely excellent corrosion resistance and machinability by covering the surface of a Ni-based alloy containing 4 to 20% Cr and 6% or less Ag with a Rh layer. The purpose is to provide metal materials for
時計、時計バンド、めがねフレーム等の装飾品には基材
金属を貴金属層で被ったものがある。Some decorative items such as watches, watch bands, and eyeglass frames are made by covering a base metal with a precious metal layer.
これは主として装飾上ないしは製品価値を高めるためで
あるが、技術上は装飾品の耐食性を改良し、耐久性を向
上させるためである。このような貴金属としてはＡへ
Ｐｔ等が有名であるが、Ａｕ，Ｐｔ等よりも高価なＲｈ
を用いることもある。This is mainly for decorative purposes or to increase product value, but technically it is for improving the corrosion resistance and durability of decorative items. For such precious metals, go to A.
Pt etc. are famous, but Rh is more expensive than Au, Pt etc.
may also be used.
このＲｈは白色金属で耐食性が良く、装飾上も良好で装
飾品の貴金属層被覆として極めて望ましい。従来、Ｒｈ
層を設けるに際しその基材金属としては外観が白色であ
る金属たとえばステンレススチール（たとえばＳＵＳ３
０４）、洋白、洋白に金クラツドを施したものを用いて
いる。This Rh is a white metal with good corrosion resistance and is also good for decoration, making it extremely desirable as a precious metal layer coating for decorative items. Conventionally, Rh
When forming a layer, the base metal is a metal with a white appearance, such as stainless steel (for example, SUS3).
04), nickel silver or nickel silver coated with gold cladding is used.
これはＲｈ層が剥離した場合における主として装飾上の
見地からであると考えられる。しかしこのような基材金
属にＲｈ層を設けた装飾品は永年の使用において点蝕を
生ずるという欠点があり実用には向かなかった。この発
明はこのような欠点を除去し、永年の使用においても点
蝕を生ぜず、したがって充分に実用的なＲｈ層を設け且
つ切削性の優れた装飾用材料を提供することを目的とす
る。This is considered to be mainly from a decorative point of view when the Rh layer peels off. However, such ornaments in which a Rh layer is provided on a base metal have the disadvantage of causing pitting after long-term use, and are not suitable for practical use. The object of the present invention is to eliminate such drawbacks, and to provide a decorative material that does not cause pitting even after long-term use, has a sufficiently practical Rh layer, and has excellent machinability.
すなわち、この発明の第１の装飾品用金属材料は、クロ
ムＣｒ４〜２０％および銀Ａ節％以下を含み残部実質的
にニッケルＮｉからなるＮｉ基合金表面をＲｈ層を被っ
て成ることを特徴とするものである。That is, the first metal material for decorative articles of the present invention is characterized in that the surface of a Ni-based alloy containing 4 to 20% of chromium and 20% or less of silver, and the remainder being substantially nickel and Ni, is covered with a Rh layer. That is.
また、この発明の第２の装飾品用金属材料は、上記第１
の装飾品用金属材料におけるＮｉ基合金が更に銅Ｃｕお
よび鉄Ｆｅから選ばれた元素の一種以上をＡｇとの合計
量で６％以下となる量で含むことを特徴とするものであ
る。このようなこの発明による金属材料を用いて装飾品
、たとえば時計、時計バンド、めがねフレーム、ライタ
ー、楽器、贋物、ネックレス、ブレスレット等を製造す
れば、装飾上も良好であるばかりでなく、永年の使用に
おいても点蝕を生じない。Further, the second metal material for decorative articles of the present invention is the first metal material described above.
The Ni-based alloy in the metal material for decorative articles further contains one or more elements selected from copper, Cu, and iron, in an amount that together with Ag is 6% or less in total. If ornaments such as watches, watch bands, eyeglass frames, lighters, musical instruments, counterfeit goods, necklaces, bracelets, etc. are manufactured using the metal material according to the present invention, they will not only be good decoratively but also have a long life. No pitting occurs during use.
本発明者はＣｒ４〜２０％およびＡｇまたはＡｇとＣｕ
およびＦｅの一種以上とを合計量で６％以下を合むＮｉ
基合金を基材金属に用いる場合、Ｒｈ層で被った金属材
料は永年の使用に耐えることを発見した。The present inventor has discovered that Cr4-20% and Ag or Ag and Cu
and one or more types of Fe in a total amount of 6% or less
It has been discovered that when a base alloy is used as the base metal, the metal material coated with the Rh layer can withstand many years of use.
この発明はこのような発見に基づいている。これは下記
の理由によると考えられる。基材金属にＲｈ層を設けて
成る金属材料の腐食は主として基材金属とＲｈ層とで構
成される化学電池の電位差に大小に支配されると考えら
れる。This invention is based on these discoveries. This is considered to be due to the following reasons. Corrosion of a metal material formed by providing a Rh layer on a base metal is thought to be mainly controlled by the potential difference of a chemical cell composed of the base metal and the Rh layer.
即ち、かかる電位差が大きい場合腐食され易いのである
。これは装飾品材料におけるＲｈ層は０．１〜．数山ｍ
と薄く、したがって本質的にポーラスであるから、この
孔に汗（塩を多く含む）等の電解質溶液が触れるとＲｈ
層と基地金属間に電池が形成されることとなり腐食が昂
進されるからである。このため、この発明において耐食
性が良好なのはＲｈとＣｒ４〜２０％およびＡｇ，Ｃ山
Ｆｅを６％以下含むＮｊ基合金との電位差が小さいため
と考えられる。基地金属間にＲｈ層を設けた装飾品用材
料の点蝕は基地金属の種類を選択すれば解決されること
予想されるわけであるが、Ｒｈのイオン化額向は不明（
種々の文献に載つていない）であり、標準電極電位も不
明であるためにその選択は困難であり、かっこの発明の
Ｎｉ基合金のＣｒを一定範囲に限定し、かつ一定限度ま
でのＡｇ，Ｃｕ，Ｆｅを含有させた合金の総合的な標準
電極電位がＲｈの電位に低いものとして得られることが
解明されていなかったため、従来良好な耐食性の基材金
属にＲｈ層を設けて成る装飾品用材料は存在しなかった
ものと考えられる。That is, if such a potential difference is large, corrosion is likely to occur. This means that the Rh layer in decorative material is 0.1~. several mountain meters
Because it is thin and therefore porous in nature, when an electrolyte solution such as sweat (which contains a lot of salt) comes into contact with these pores, Rh
This is because a battery is formed between the layer and the base metal, accelerating corrosion. Therefore, the reason why the corrosion resistance is good in the present invention is considered to be because the potential difference between Rh and the Nj-based alloy containing 4 to 20% of Cr and 6% or less of Ag, C and Fe is small. It is expected that pitting of decorative materials with an Rh layer between base metals can be solved by selecting the type of base metal, but the amount of Rh ionization is unknown (
Since the standard electrode potential is also unknown, it is difficult to select one.The Cr content of the Ni-based alloy of the invention in parentheses is limited to a certain range, and the Ag content is limited to a certain range. Since it was not clear that the overall standard electrode potential of alloys containing , Cu, and Fe could be obtained as low as the potential of Rh, decorations consisting of a base metal with good corrosion resistance and a Rh layer were used. It is thought that there were no materials for the items.
この発明を更に詳しく説明する。This invention will be explained in more detail.
この発明において用いられる基材金属はＣｒ４〜２０％
を含むＮｉ基合金である。The base metal used in this invention is Cr4-20%
It is a Ni-based alloy containing.
この基材合金には任意に、Ｃ，Ｓｊ，Ｍｎ，Ｎ，Ｔｉ等
の脱酸剤の１種以上総計で４％までを代表的な不純物と
して含むことができる。この発明の合金は、更にＡｇま
たはＡｇとＣｕおよびＦｅから成る群より選択された１
種以上とを総計で６％まで含む。ＣｒはＲｈとの電位差
を極小とするために添加され、４〜２０％の範囲でない
とこの発明の所望の効果を達成することができない。The base alloy may optionally contain one or more deoxidizing agents such as C, Sj, Mn, N, Ti, etc., in a total amount of up to 4% as typical impurities. The alloy of the present invention further comprises one selected from the group consisting of Ag or Ag and Cu and Fe.
Contains up to 6% of species and above in total. Cr is added to minimize the potential difference with Rh, and unless it is in the range of 4 to 20%, the desired effect of the present invention cannot be achieved.
また、Ａｇ，ＣｕおよびＦｅは装飾品用材料の機械加工
性（快削性）を向上させるために添加され、６％を超え
ると、快削性は向上するが脆性が大きくなり、更にはＲ
ｈとの電位差が大きくなって材料の耐食性が充分でなく
なる。In addition, Ag, Cu, and Fe are added to improve the machinability (free machinability) of materials for decorative items.
The potential difference with h increases, and the corrosion resistance of the material becomes insufficient.
より詳しくは、ＡｇはＮｉ−Ｃｒ合金マトリクスに固港
せず、分散粒子となって切削片の構造欠陥を与える（チ
ップブレーカーとして作用する）ことにより切削性を向
上するのに対して、ＣｕおよびＦｅはマトリクスに固溶
し且つその粘りを減少することにより切削性を改善する
作用を有する。この基材合金にＲｈ層を設ける方法は基
本的に限定されない。More specifically, Ag does not stick to the Ni-Cr alloy matrix and becomes dispersed particles that provide structural defects to the cutting piece (acting as a chip breaker), thereby improving machinability, whereas Cu and Fe is dissolved in the matrix and has the effect of improving machinability by reducing its viscosity. The method of providing the Rh layer on this base alloy is basically not limited.
たとえばメッキ、クラツドで設けることができる。Ｒｈ
層の厚さは従釆のように０．１〜数仏ｍである。以下、
この発明の実施例を説明する。この実施例はこの発明を
限定するものではない。例
この発明による基地合金および従来の基地合金とＲｈと
の間の電位差を図によるような方法で測定した。For example, it can be provided by plating or cladding. Rh
The thickness of the layer is 0.1 to several meters thick like a casing. below,
Examples of this invention will be described. This example is not intended to limit the invention. EXAMPLE The potential difference between a base alloy according to the invention and a conventional base alloy and Rh was measured in the manner shown in the figure.
図において、１は３％食塩水であり、２はＲｈ、３は基
地金属、４は電位差計を示している。In the figure, 1 is a 3% saline solution, 2 is Rh, 3 is a base metal, and 4 is a potentiometer.
このような電位差計４は士３肌Ｖの範囲で測定が可能で
ある。また上記基地合金にＲｈを２．０ムｍの厚さにメ
ッキした後（但し、下表中における洋白にＡｕをクラツ
ドしたもの、および銀はメッキなし）、ＪＩＳＺ２３７
１による塩水贋霧試験を行い、耐食性を評価した。Such a potentiometer 4 is capable of measuring within a range of 300 V. In addition, after plating Rh on the above base alloy to a thickness of 2.0 mm (however, in the table below, nickel silver clad with Au and silver not plated), JIS Z237
A salt water fog test according to No. 1 was conducted to evaluate corrosion resistance.
更に上記基地合金のそれぞれについて切削性試験を行っ
た。Furthermore, machinability tests were conducted on each of the above base alloys.
すなわち、切削性を調べるための各試料は所定成分を高
周波議導炉で溶解してィンゴツトを作成して、１０００
ｑｏに加熱した後水暁入れし、その後５０％加工したも
のを用いた。切削性はＪＩＳＢ４３０１の規格を満足し
た直径２．５柳のストレートドリルを使用し、１．５ｋ
９の荷重を加えながら、回転数１７５仇．ｐ．ｍのポー
ル盤により３０秒間穿孔した時の穿孔の深さで示す。That is, each sample to be tested for machinability was prepared by melting the specified components in a high-frequency induction furnace, and preparing 1000 ingots.
After heating to qo, it was soaked in water and then processed to 50%. Cutting performance was 1.5k using a 2.5 diameter willow straight drill that met the JISB4301 standard.
While applying a load of 9, the number of rotations was 175. p. It is indicated by the depth of perforation when a hole is perforated for 30 seconds using a pole disk of m.
穿孔の深さは１／１００比奴ポイントマイクロメーター
により測定した。上記した、電位差、耐食性および切削
性の評価結果は、まとめて下表に記す。The depth of the perforation was measured using a 1/100 ratio point micrometer. The above evaluation results of potential difference, corrosion resistance, and machinability are summarized in the table below.
表
上表の結果を見ると、この発明に用いる基地合金はＲｈ
との電位差が従来の基地合金に比べて著しく小さく、得
られる装飾材料は耐食性と切削性の優れた調和を有する
ことがわかる。Looking at the results in the table above, it can be seen that the base alloy used in this invention is Rh
It can be seen that the potential difference between the two materials is significantly smaller than that of conventional base alloys, and the resulting decorative material has an excellent balance of corrosion resistance and machinability.
図は実施例における電位差測定の方法を示す概略図であ
る。
１・・・・・・３％食塩水、２・・・・・・Ｒｈ（陽極
）、３・・…・基地合金材（陰極）。The figure is a schematic diagram showing a method of measuring potential difference in an example. 1...3% saline solution, 2...Rh (anode), 3...base alloy material (cathode).
Claims (1)
％以下を含み、残部実質的にＮｉからなるＮｉ基合金表
面をＲｈ層で被うことを特徴とする装飾品用金属材料。 ２ Ｃｒ４〜２０％、Ａｇ６％以下、およびＣｕおよび
Ｆｅから選ばれた元素の一種以上をＡｇと合計量で６％
以下となる量で含み、残部実質的にＮｉからなるＮｉ基
合金表面をＲｈ層で被うことを特徴とする装飾品用金属
材料。[Claims] 1 Cr4 to 20% (weight%, the same applies hereinafter) and Ag6
% or less, and the remainder is substantially Ni, the surface of which is covered with a Rh layer. 2 4 to 20% Cr, 6% or less Ag, and one or more elements selected from Cu and Fe in a total amount of 6% with Ag
A metal material for decorative articles, characterized in that the surface of a Ni-based alloy is covered with a Rh layer, the remainder being substantially Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254081A JPS6040979B2 (en) | 1981-10-12 | 1981-10-12 | Metal materials for ornaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254081A JPS6040979B2 (en) | 1981-10-12 | 1981-10-12 | Metal materials for ornaments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57193355A JPS57193355A (en) | 1982-11-27 |
| JPS6040979B2 true JPS6040979B2 (en) | 1985-09-13 |
Family
ID=15756544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16254081A Expired JPS6040979B2 (en) | 1981-10-12 | 1981-10-12 | Metal materials for ornaments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6040979B2 (en) |
-
1981
- 1981-10-12 JP JP16254081A patent/JPS6040979B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57193355A (en) | 1982-11-27 |
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