JPS62180071A - Noble metal product having transparent hard film on surface - Google Patents
Noble metal product having transparent hard film on surfaceInfo
- Publication number
- JPS62180071A JPS62180071A JP1990686A JP1990686A JPS62180071A JP S62180071 A JPS62180071 A JP S62180071A JP 1990686 A JP1990686 A JP 1990686A JP 1990686 A JP1990686 A JP 1990686A JP S62180071 A JPS62180071 A JP S62180071A
- Authority
- JP
- Japan
- Prior art keywords
- metal product
- precious metal
- film
- noble metal
- carbon
- 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
- 229910000510 noble metal Inorganic materials 0.000 title abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 229910052737 gold Inorganic materials 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052709 silver Inorganic materials 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000012808 vapor phase Substances 0.000 claims abstract description 4
- 229910003481 amorphous carbon Inorganic materials 0.000 claims abstract description 3
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 3
- 239000010432 diamond Substances 0.000 claims abstract description 3
- 239000010970 precious metal Substances 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 5
- 238000001308 synthesis method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000001681 protective effect Effects 0.000 abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005524 ceramic coating Methods 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 229910021385 hard carbon Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 229910052682 stishovite Inorganic materials 0.000 abstract description 2
- 229910052905 tridymite Inorganic materials 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- 229910017083 AlN Inorganic materials 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 24
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 235000019646 color tone Nutrition 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002932 luster Substances 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 241000276699 Seriola Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】 １１上少遭里公！ 本発明は表面被覆を有する貴金属製品に関する。[Detailed description of the invention] 11th grade lord! The present invention relates to precious metal products with surface coatings.
さらに詳しくいえば、貴金属特に金、白金、銀、銅から
なる群から選ばれる少なくとも１種を主成分とする貴金
属製品に透明硬質膜を適用して、貴金属の特性を損うこ
となく、その耐候性、耐摩耗性を改善することに関する
。More specifically, by applying a transparent hard film to precious metal products whose main component is at least one selected from the group consisting of gold, platinum, silver, and copper, the weather resistance of the precious metal can be improved without impairing the properties of the precious metal. related to improving wear resistance and wear resistance.
従来の技術
貴金属、例えば金、白金、銀等は特に装飾品の分野で節
用され、装身具、置物等の各種の貴金属製品が製造され
、流通している。この貴金属装飾品は一般に、無垢又は
渡合の形で用いられ、色調に極めて優れているものの、
長年使用するにつれて輝きが失われ、徐々に退色してし
まうことが良く知られている。また、一般に軟質であり
、傷が付き易いという欠点をも持ち合せている。BACKGROUND OF THE INVENTION Precious metals such as gold, platinum, silver, etc. are used particularly in the field of ornaments, and various precious metal products such as jewelry and ornaments are manufactured and distributed. These precious metal ornaments are generally used in the form of solid wood or wataai, and although they have excellent color tones,
It is well known that over many years of use, it loses its shine and gradually fades. They also have the disadvantage of being generally soft and easily scratched.
しかしながら、従来、これら貴金属製品に対する保護手
段は何等施されておらず、所定の期間毎に暦き直しを行
い元の色調を回復させることが行われていたにすぎない
。However, conventionally, no protection measures have been taken for these precious metal products, and the only thing that has been done is to reset the calendar every predetermined period to restore the original color tone.
発明が解決しようとする問題点
上記の如く、貴金属は色調に優れるが、厳しい環境下で
の耐候性は著しく低く、また総じて柔かい為、傷が付き
易いといった欠点を持ち合わせている。Problems to be Solved by the Invention As mentioned above, noble metals have excellent color tone, but they also have the drawbacks of extremely low weather resistance in harsh environments, and because they are generally soft, they are easily scratched.
即ち、貴金属は化合的腐食に対する耐性が低く、また軟
質であって表面傷を受は易いことから、その特有の輝き
、色調などが損われ、使用に伴って退色等を生じ、その
価値が失われてしまう。In other words, precious metals have low resistance to chemical corrosion, and are soft and susceptible to surface scratches, so their unique shine and color tone are lost, and their color fades with use, causing them to lose their value. I'll get lost.
ところで、セラミックス材料は化学的安定性（耐食性）
、耐熱性、機械的強度、耐スクラ・ノチ性等の各種特性
に優れ、各種構造材料、表面コーティング材料などとし
て注目され、例えば各種電気部品、半導体デバイスなど
において、これらデバイス等の特性を長期に亘り保持す
るためにセラミックスコーティングが利用されている。By the way, ceramic materials have chemical stability (corrosion resistance)
It has excellent properties such as heat resistance, mechanical strength, and scratch/notch resistance, and is attracting attention as a variety of structural materials and surface coating materials.For example, it is used in various electrical parts, semiconductor devices, etc. Ceramic coatings are used to hold it in place.
従って、上記貴金属製品の欠点を補うためにセラミック
スコーティングを利用して、長期間に亘りこれら製品の
耐候性、耐スクラッチ性等を保持することはその製品価
値を長期に亘り持続させる上で極めて有用であり、本発
明の目的もこの点にある。即ち、高い耐化学腐食性並び
に耐スクラッチ性を大幅に改善した貴金属製品を提供す
ることにある。Therefore, it is extremely useful to maintain the weather resistance, scratch resistance, etc. of these products over a long period of time by using ceramic coating to compensate for the drawbacks of the above-mentioned precious metal products. This is also the object of the present invention. That is, the object of the present invention is to provide a precious metal product with high chemical corrosion resistance and significantly improved scratch resistance.
問題点を解決するための手段
本発明者等は貴金属製品の上記のような現状に鑑みて、
その耐候性、耐スクラッチ性等を改善する技術を開発す
べく種々検討した結果、゛貴金属製品の表面に所定の厚
さでセラミックスの薄膜を適用することが有利であるこ
とを見出し、本発明を完成した。Means for Solving the Problems In view of the above-mentioned current state of precious metal products, the present inventors have proposed the following:
As a result of various studies to develop techniques to improve weather resistance, scratch resistance, etc., it was discovered that it is advantageous to apply a thin ceramic film of a predetermined thickness to the surface of precious metal products, and the present invention was developed. completed.
即ち、本発明の貴金属製品は金、白金、銀および銅から
なる群から選ばれる少なくとも１種を含有する貴金属物
品と、その表面に設けられた透光性かつ硬質のセラミッ
クスあるいはカーボンの被膜とで構成されることを特徴
とするものである。That is, the precious metal product of the present invention comprises a precious metal article containing at least one member selected from the group consisting of gold, platinum, silver, and copper, and a transparent and hard ceramic or carbon coating provided on the surface of the precious metal article. It is characterized by being configured.
本発明において有用な貴金属物品としてはカップ、皿、
スプーン、フォーク、ナイフ、等の食器類；首飾り、ペ
ンダント、指輪、ブレスレット、時計のがわ、イヤリン
グ、カフスボタン、ボタン、ネクタイピン等の装身具、
銅板等の建材：置き時計のがわ、その他各種貴金属製置
物等の室内装飾品；続矛等の屋外装飾品など任意の形状
、特性のものであり得る。Precious metal articles useful in the present invention include cups, plates,
Tableware such as spoons, forks, knives, etc.; Accessories such as necklaces, pendants, rings, bracelets, watch cases, earrings, cufflinks, buttons, tie pins, etc.
Building materials such as copper plates: Interior decorations such as clock walls and various other ornaments made of precious metals; Outdoor decorations such as spears, etc. Can be of any shape and characteristics.
また、本発明において有効な透光性かつ硬質セラミック
スの薄膜材料としては、アルミナ、ジルコン、シリカ、
窒化珪素、窒化アルミニウム、窒化ホウ素等を代表的な
ものとして例示できる。また、カーボン薄膜材料として
は硬質アモルファスカーボン（ｉ−Ｃ：アモルファス状
ダイヤモンド質カーボン）またはダイヤモンドであり得
る。 −この保護膜の厚さは０．１〜１０μｍの範囲内
とすることが好ましく、これらは気相合成法例えば化学
気相蒸着法（ＣＶＤ法）、プラズマＣＶＤ法、イオンブ
レーティング法などを利用して形成することができ、複
雑な形状を有する場合には、付き回り性、ステップカバ
レージ性の点でＣＶＤ法が好ましい。また、単純な形状
の物品に対しては、金属のアルコラート等を塗布し、こ
れを加熱することによりセラミックス被覆を形成するこ
ともできる。In addition, examples of effective translucent and hard ceramic thin film materials in the present invention include alumina, zircon, silica,
Representative examples include silicon nitride, aluminum nitride, and boron nitride. Further, the carbon thin film material may be hard amorphous carbon (i-C: amorphous diamond-like carbon) or diamond. - The thickness of this protective film is preferably within the range of 0.1 to 10 μm, and can be formed using a vapor phase synthesis method such as a chemical vapor deposition method (CVD method), a plasma CVD method, an ion blating method, etc. In the case of having a complicated shape, the CVD method is preferable in terms of coverage and step coverage. Furthermore, for articles with a simple shape, a ceramic coating can be formed by applying a metal alcoholate or the like and heating the coating.
例えばＣＶＤ法で保護膜の形成を行う場合、Ａｒ＋０２
雲囲気、Ｎ２（十Ｈ２）雰囲気等の下で、例えばＡｌ２
Ｏ３の場合に（おＩＣＩ：ｌ＋１−（２０を原料ガスと
し、ＳｉＣ２の場合には５ＩＣＩＡ 十８２０を、Ｚｒ
Ｏ２の場合にはＺｒｃＬなどが、またＡＩ Ｎ ％ Ｓ
Ｌ３ Ｎ ４の場合には夫々ＡＩＣ］３ ＋ Ｎ２ ＋
Ｈ２０および５ｉ（ＮＨ２）−が原料ガスとして使用で
きる。For example, when forming a protective film using the CVD method, Ar+02
For example, under a cloud atmosphere, N2 (10H2) atmosphere, etc., Al2
In the case of O3 (ICI: l + 1 - (20 is the raw material gas, in the case of SiC2, 5ICIA + 820, Zr
In the case of O2, ZrcL, etc., and AI N % S
In the case of L3 N 4, respectively AIC] 3 + N2 +
H20 and 5i(NH2)- can be used as source gases.
また、プラズマＣＶＤ法では低温度条件下での成膜が可
能であるなどの特徴を有することから、高温条件下でＣ
ＶＤ法により成膜することが被処理製品にとって好まし
くない場合には有利である。In addition, the plasma CVD method has features such as being able to form films under low temperature conditions, so it is possible to form films under high temperature conditions.
This is advantageous when forming a film by the VD method is undesirable for the product to be processed.
これら被膜は、単一材料の一層あるいは異なる材料の少
なくとも２層からなる多層構造などがいずれも可能であ
り、このような態様のいずれも本発明の範囲にはいるも
のと理解すべきである。These coatings can have either a single layer of a single material or a multilayer structure consisting of at least two layers of different materials, and it should be understood that any of these embodiments falls within the scope of the present invention.
スパッタ法、イオンブレーティング法等のいわゆる物理
気相蒸着法（ＰＶＤ法）では、機械的に被コーテイング
物品表面を損傷する恐れがある。So-called physical vapor deposition methods (PVD methods) such as sputtering methods and ion blating methods may mechanically damage the surface of the article to be coated.
従って、被処理物品の表面損傷を避けたい場合には、予
めＣＶＤ法等の表面損傷性の小さいと思われる方法で成
膜した後、その上にＰＶＤ法による膜を積層するなどの
方法を採用することによって、表面損傷の可能性なしに
、ＰＶＤ法を有利に応用できる。このような成膜法も本
発明の範囲内ｊごはいることは勿論である。Therefore, if you want to avoid surface damage to the object to be treated, you should first form a film using a method that is thought to cause less surface damage, such as CVD, and then layer a PVD film on top of it. By doing so, the PVD method can be advantageously applied without the possibility of surface damage. Of course, such a film forming method is also within the scope of the present invention.
作画
貴金属製品は無垢又は渡合の形で用いられており、一般
には耐腐食性、耐スクラッチ性に劣るために、その輝き
、色調は失われ、徐々に退色してしまう。これは化学的
腐食あるいは表面傷の発生によるものであり、しばしば
磨き直す必要があった。Painted precious metal products are used in the form of solid or watara, and generally have poor corrosion resistance and scratch resistance, so they lose their shine and color tone and gradually fade. This was due to chemical corrosion or surface scratches, which often required repolishing.
しかしながら、このような貴金属固有の欠点は本発明に
従って、その表面に透明かつ硬質のセラミックスまたは
カーボンの薄膜を適用することによって有利に解決する
ことができる。However, these inherent disadvantages of noble metals can be advantageously overcome according to the invention by applying a transparent and hard ceramic or carbon thin film to their surface.
貴金属固有の光沢を失わさぬため、表面に形成させる保
護膜は透明であることは勿論のこと、最大厚みは１０ミ
クロン以下とすることが必要である。In order not to lose the luster inherent to noble metals, the protective film formed on the surface must not only be transparent but also have a maximum thickness of 10 microns or less.
また、所定の表面保護効果を生ぜしめる為には最小厚み
は０．１ミクロン以上とすることが必要である。Further, in order to produce a predetermined surface protection effect, the minimum thickness must be 0.1 micron or more.
保護膜形成法としては、金属アルコラート等を塗布し、
熱を加えてセラミックスを形成させる方法でも良いが、
より好ましい手段は既に述べたように気相合成法である
。この方法によれば均質且つ厚みムラの少ない保護膜を
形成させることが容易となる。保護膜の組成としては、
貴金属より硬く且つ耐食性に優れ透明である物質が主成
分であることが必要である。The protective film formation method involves applying metal alcoholate, etc.
It is also possible to form ceramics by applying heat, but
A more preferable means is the vapor phase synthesis method as already mentioned. According to this method, it becomes easy to form a protective film that is homogeneous and has less uneven thickness. The composition of the protective film is as follows:
The main component must be a substance that is harder than noble metals, has excellent corrosion resistance, and is transparent.
貴金属の内でも最も耐食性に優れると言われる金（Ａｕ
＞でも、長時間風雨に晒されると退色するが、本発明の
構造の表面保護膜を形成させると、金よりも保護膜の耐
蝕性や耐摩耗性が優れるので、退色は著しく抑制される
。しかも本発明の保護膜は可視領域の波長の光では透明
であるため、全本来の持つ色合いを失わさないので商品
価値を損うこともない。Gold (Au) is said to have the highest corrosion resistance among precious metals.
>However, if exposed to wind and rain for a long time, the color will fade, but if a surface protective film with the structure of the present invention is formed, the corrosion resistance and abrasion resistance of the protective film are better than that of gold, so the color fading is significantly suppressed. Furthermore, since the protective film of the present invention is transparent to light of wavelengths in the visible range, it does not lose its original color and does not impair its commercial value.
実施例
以下、本発明を実施例（作製例）によって更に詳しく説
明すると共に、その奏する効果を実証する。しかしなが
ら、本発明の範囲は以下の例によって何隻制限されない
。EXAMPLES Hereinafter, the present invention will be explained in more detail by examples (manufacturing examples), and its effects will be demonstrated. However, the scope of the invention is not limited by the following examples.
実施例１
銀製の食器皿にイオンブレーティング法によりＡｌ２Ｏ
＊膜を０．６ミクロンの厚みに蒸着した。この食器とＡ
ｌ２Ｏ３膜を蒸着させていない銀皿を使用したところ、
前者は１ケ月使用しても全く輝きを失わなかったのに対
して、後者は１週間毎に暦き直さないと光沢が失われて
しまうことが確Ｓ忍された。Example 1 Al2O was applied to a silver tableware plate by the ion blating method.
*The film was deposited to a thickness of 0.6 microns. This tableware and A
When using a silver plate on which l2O3 film was not deposited,
While the former did not lose its luster at all even after one month of use, it was confirmed that the latter would lose its luster if it was not refreshed every week.
次いで前者の皿の表面に更に５１３Ｎ４膜をスパッター
法により５ミクロンの厚みに蒸着した。この皿は６ケ月
使用しても全く輝きを失わなかった。Next, a 513N4 film was further deposited on the surface of the former dish to a thickness of 5 microns by sputtering. This plate did not lose any shine even after 6 months of use.
実施例２
家屋の屋根の一部を銅板で葺き、その銅板の内の一部を
プラズマＣＶＤ法によりＡＩ。０３膜で被覆した。Ａｌ
２Ｏ３膜の皐みは８ミクロンであった。Example 2 A part of the roof of a house was covered with a copper plate, and a part of the copper plate was subjected to AI using the plasma CVD method. It was coated with 03 membrane. Al
The wrinkle of the 2O3 film was 8 microns.
この家を１年后に訪れたところ、Ａｌ２Ｏ３被菜を施し
た銅板のみ赤銅色の輝きを呈し、他の銅板は茶色もしく
は黄緑色に変色していた。When I visited this house a year later, I found that only the copper plates that had been coated with Al2O3 had a red copper shine, while the other copper plates had discolored to brown or yellow-green.
実施例３
全鍍金した首飾りにプラズマ蒸着法により透明硬質カー
ボンを蒸着した。この蒸着処理を施さない首飾りは１年
も使用すると傷がつき始め光沢が失われるのに対して、
カーボン蒸着処理をした首飾りは３年使用しても元の光
沢が失われなかった。Example 3 Transparent hard carbon was deposited on a fully plated necklace by plasma deposition. Necklaces that are not subjected to this vapor deposition treatment begin to get scratched and lose their luster after being used for a year, whereas
The carbon-deposited necklace did not lose its original luster even after three years of use.
なお、この透明硬質カーボン膜の厚みは０．１ミクロン
で、膜は電気的に絶縁性を有していた。The thickness of this transparent hard carbon film was 0.1 micron, and the film had electrical insulation properties.
実施例４
金の薄板を貼りつけた琥矛の薄板を基体より剥がして、
その一部の板に金属アルコラートを塗布し、真空炉で加
熱排気することにｊすＳｉＯ２を３〜７ミクロンの厚み
に表面被覆した。またイオン蒸着法によりＢＮ膜を夫々
５ミクロン及び３ミクロンの厚みに表面被覆した。Example 4 A thin plate of amberjack with a thin gold plate pasted on it was peeled off from the base,
Metal alcoholate was applied to some of the plates, and the surface was coated with SiO2 to a thickness of 3 to 7 microns by heating and exhausting in a vacuum furnace. Further, the surface was coated with a BN film to a thickness of 5 microns and 3 microns, respectively, by ion vapor deposition.
この琥矛は屋根の上に取付けて２年経った後も全く退色
せず、従来の琥矛が１年毎に暦きを行う必要があった事
実と比べると格段の差があった。Even after two years had passed since it was installed on the roof, the color did not fade at all, which was a big difference compared to the fact that the traditional ako had to be read every year.
発明の効果
以上詳しく述べたように、本発明によれば、耐化学腐食
性並びに耐スクラッチ性に劣り、使用に伴ってその特有
の色調が損われてしまう各種貴金属製品に、長期に亘る
耐候性、耐摩耗性等を付与することができる。その結果
、短期間の周期で暦き直しするといった面倒な作業が不
要となり、維持、保守コストが大巾に節減できることと
なる。Effects of the Invention As described in detail above, the present invention provides long-term weather resistance to various precious metal products that have poor chemical corrosion resistance and scratch resistance, and which lose their unique color tone with use. , wear resistance, etc. can be imparted. As a result, the troublesome work of resetting the calendar at short intervals becomes unnecessary, and maintenance costs can be reduced significantly.
更に、貴金属製品は装身具、室内・外装飾品等として使
用され、その呈する特有の色調、輝きが常に維持されて
いることが必要であり、この点本発明によればこれらが
十分に維持できるので、各製品の商品価値は、本発明に
よって著しく改善されることになる。１Furthermore, since precious metal products are used as accessories, interior and exterior decorations, etc., it is necessary to always maintain their characteristic color tone and shine, and in this regard, the present invention can sufficiently maintain these. The commercial value of each product will be significantly improved by the present invention. 1
Claims (6)
とも１種を含有する貴金属物品と、その表面に設けられ
た、透光性のある硬質のセラミックス或いはカーボンの
被膜とで構成されることを特徴とする貴金属製品。(1) Consisting of a precious metal article containing at least one member selected from the group consisting of gold, platinum, silver, and copper, and a transparent hard ceramic or carbon coating provided on its surface. A precious metal product characterized by:
の範囲内であることを特徴とする特許請求の範囲第１項
記載の貴金属製品。(2) The precious metal product according to claim 1, wherein the film thickness of the coating is within the range of 0.1 micron to 10 micron.
ることを特徴とする特許請求の範囲第１項または第２項
記載の貴金属製品。(3) The precious metal product according to claim 1 or 2, wherein the coating is formed by a vapor phase synthesis method.
ことにより得られたものである特許請求の範囲第１項ま
たは第２項記載の貴金属製品。(4) The precious metal product according to claim 1 or 2, wherein the coating is obtained by applying a metal alcoholate and heating it.
＿２、ＳｉＯ＿２、Ｓｉ＿３Ｎ＿４、ＡｌＮまたはこれ
らの混合物であることを特徴とする特許請求の範囲第１
〜４項のいずれか１項に記載の貴金属製品。(5) The above hard ceramics are Al_2O_3, ZrO
_2, SiO_2, Si_3N_4, AlN or a mixture thereof
The precious metal product according to any one of items 1 to 4.
はダイヤモンドであることを特徴とする特許請求の範囲
第１〜３項のいずれか１項に記載の貴金属製品。(6) The precious metal product according to any one of claims 1 to 3, wherein the carbon is hard amorphous carbon or diamond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990686A JPS62180071A (en) | 1986-01-31 | 1986-01-31 | Noble metal product having transparent hard film on surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990686A JPS62180071A (en) | 1986-01-31 | 1986-01-31 | Noble metal product having transparent hard film on surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62180071A true JPS62180071A (en) | 1987-08-07 |
Family
ID=12012255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990686A Pending JPS62180071A (en) | 1986-01-31 | 1986-01-31 | Noble metal product having transparent hard film on surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62180071A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62270774A (en) * | 1986-05-16 | 1987-11-25 | Sumitomo Electric Ind Ltd | Ornament coated with hard transparent film |
| EP0384667A1 (en) * | 1989-02-16 | 1990-08-29 | De Beers Industrial Diamond Division (Proprietary) Limited | Diamond growth |
| EP0679729A1 (en) * | 1994-04-29 | 1995-11-02 | Wmf Württembergische Metallwarenfabrik Ag | Process for preventing tarnishing of products |
| EP0784101A1 (en) | 1995-12-14 | 1997-07-16 | Orient Watch Co., Ltd. | Structure formed with transparent protective film and method for production thereof |
| US5981060A (en) * | 1997-05-27 | 1999-11-09 | Kyocera Corporation | Decorative member |
| US6284376B1 (en) | 1997-07-31 | 2001-09-04 | Kyocera Corporation | Ornamental article and process for producing the same |
| KR100364851B1 (en) * | 1999-10-26 | 2002-12-26 | 유창남 | Coating composition for protecting thin layer of precious metal and method of preparing coating layer using the same |
| US8883258B2 (en) | 2006-02-02 | 2014-11-11 | Beneq Oy | Protective coating of silver |
-
1986
- 1986-01-31 JP JP1990686A patent/JPS62180071A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62270774A (en) * | 1986-05-16 | 1987-11-25 | Sumitomo Electric Ind Ltd | Ornament coated with hard transparent film |
| EP0384667A1 (en) * | 1989-02-16 | 1990-08-29 | De Beers Industrial Diamond Division (Proprietary) Limited | Diamond growth |
| EP0679729A1 (en) * | 1994-04-29 | 1995-11-02 | Wmf Württembergische Metallwarenfabrik Ag | Process for preventing tarnishing of products |
| EP0784101A1 (en) | 1995-12-14 | 1997-07-16 | Orient Watch Co., Ltd. | Structure formed with transparent protective film and method for production thereof |
| US5981060A (en) * | 1997-05-27 | 1999-11-09 | Kyocera Corporation | Decorative member |
| US6284376B1 (en) | 1997-07-31 | 2001-09-04 | Kyocera Corporation | Ornamental article and process for producing the same |
| KR100364851B1 (en) * | 1999-10-26 | 2002-12-26 | 유창남 | Coating composition for protecting thin layer of precious metal and method of preparing coating layer using the same |
| US8883258B2 (en) | 2006-02-02 | 2014-11-11 | Beneq Oy | Protective coating of silver |
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