JPH03115582A - Method for coating diamond with noble metal - Google Patents

Method for coating diamond with noble metal

Info

Publication number
JPH03115582A
JPH03115582A JP25436089A JP25436089A JPH03115582A JP H03115582 A JPH03115582 A JP H03115582A JP 25436089 A JP25436089 A JP 25436089A JP 25436089 A JP25436089 A JP 25436089A JP H03115582 A JPH03115582 A JP H03115582A
Authority
JP
Japan
Prior art keywords
diamond
noble metal
org
metal
compd
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
Application number
JP25436089A
Other languages
Japanese (ja)
Inventor
Hiroko Hoshi
裕子 星
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.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
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 Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP25436089A priority Critical patent/JPH03115582A/en
Publication of JPH03115582A publication Critical patent/JPH03115582A/en
Pending legal-status Critical Current

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  • Chemically Coating (AREA)

Abstract

PURPOSE:To form a colorful thin noble metal film on the surface of diamond by dissolving an org. compd. of a noble metal and an org. compd. of other specified metal in an org. solvent or further dissolving a resin binder, coating the surface of the diamond with the resulting soln. and carrying out baking. CONSTITUTION:An org. compd. of a noble metal such as Pt, Au or Ag synthesized by allowing the chloride or other inorg. salt of the noble metal to react with org. carboxylic acid and an org. compd. of a metal such as Cr, Sb, Pb, Bi, Si, V, Ba, Zr, Ca or Al synthesized in a similar way and used to obtain various color tones as well as to enhance the adhesive strength of the noble metal to diamond are dissolved in an org. solvent such as methanol or toluene or a binder such as epoxy resin is further dissolved. The cut faces of diamond are coated with the resulting soln. and this soln. is dried and heated to <=600 deg.C to decompose the org. compds. A colorful thin noble metal film is formed on the cut faces of the diamond with superior adhesive strength.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、装飾用に稀少価値の高いダイヤモンド上に貴
金属コーティングする方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for coating precious metals on diamonds, which are highly rare and valuable for decoration.

(従来技術とその問題点) 従来、装飾用に稀少価値の高いダイヤモンドは極めて多
用されているが、ダイヤモンドの持つ特有の結晶構造を
生かしカット技術とあいまって神秘的な輝きが好まれて
きた。
(Prior art and its problems) Diamonds, which are highly rare and valuable, have traditionally been used extremely frequently for decorative purposes, but diamonds have been loved for their mysterious brilliance, which is combined with cutting techniques that make use of their unique crystal structure.

しかし、最近では人造ダイヤモンドを合成することも可
能となり、身近な装飾品としてなりつつある。
However, recently it has become possible to synthesize synthetic diamonds, and they are becoming a common accessory.

特に、最近の装飾品の傾向として身につける人の好みと
価値感の違いで特徴のあるものが好まれており、ダイヤ
モンド上に貴金属をコーティングして特徴を持たせるこ
とが考えられたが、従来技術ではこれを達成することが
できず技術開発が望まれていた。
In particular, as a recent trend in jewelry, items with characteristics are preferred depending on the taste and sense of value of the wearer, and it was thought that coating diamonds with precious metals to give them characteristics. This could not be achieved with conventional technology, and technological development was desired.

(発明の目的) 本発明は、上記の要望されていたことを解決するために
成されたもので、ダイヤモンドの一部分に簡便な方法に
より多彩な貴金属のコーティングを施すことのできる方
法を提供することを目的とする。
(Objective of the Invention) The present invention has been made in order to solve the above-mentioned needs, and it is an object of the present invention to provide a method for coating a portion of a diamond with various precious metals by a simple method. With the goal.

(問題点を解決するための手段) 本発明は、600℃以下で熱分解して金属または金属酸
化物となる有機貴金属化合物および有機金属化合物と必
要であればバインダとして樹脂を加えて有機溶剤に溶解
した貴金属含有溶液をダイヤモンド上に塗布し、焼成す
ることを特徴とするダイヤモンド上への貴金属コーティ
ング方法で、前記有機金属化合物の金属成分がクロム、
アンチモン、鉛、ビスマス、ケイ素、バナジウム、バリ
ウム、ジルコニウム、カルシウム、アルミニウムの群よ
り選ばれたl f!T!以上であるダイヤモンド上への
貴金属コーティング方法である。
(Means for Solving the Problems) The present invention provides organic noble metal compounds and organometallic compounds that thermally decompose at 600°C or lower to become metals or metal oxides, and if necessary, a resin as a binder, which is then dissolved in an organic solvent. A method for coating a diamond with a noble metal, which comprises applying a solution containing a dissolved noble metal onto the diamond and firing the diamond, wherein the metal component of the organometallic compound is chromium,
l f! selected from the group of antimony, lead, bismuth, silicon, vanadium, barium, zirconium, calcium, and aluminum. T! The above is a method for coating a diamond with a noble metal.

ダイヤモンドの特性から前記の有機貴金属化合物を含む
溶液は600℃以下の温度で熱分解して貴金属の薄膜を
形成するものでなければならず、しかも、ダイヤモンド
に密着して剥がれに(いものでなくてはならないもので
、それを達成するための成分組成について以下詳細に説
明する。
Due to the characteristics of diamond, the solution containing the organic noble metal compound described above must be thermally decomposed at a temperature of 600°C or less to form a thin film of precious metal. The component composition for achieving this will be explained in detail below.

まず、主成分となる貴金属成分は貴金属塩化物または貴
金属の無機塩と有機カルボン酸を反応させて合成した有
機貴金属化合物であり、他にダイヤモンドと貴金属の密
着力を高めるためと、多彩な色合いを出すために、貴金
属以外の金属としてクロム、アンチモン、鉛、ビスマス
、ケイ素、バナジウム、バリウム、ジルコニウム、カル
シウム、アルミニウムの群より選ばれた1種以上を上記
貴金属の有機化合物と同様に合成した有機金属化合物を
含み、多彩な貴金属コーティングを施すために塗布し易
くさせるための適度の粘度とするのにα−ターピネオー
ル、ジブチルカルピトール、メンタノール、トルエン等
より選らび前記有機貴金属化合物および有機金属化合物
を溶解して溶液とすることのできる共通の有機溶剤を加
えて調製して溶液状としたものである。
First, the main precious metal component is an organic noble metal compound synthesized by reacting a precious metal chloride or an inorganic salt of a precious metal with an organic carboxylic acid. Organic metals prepared by synthesizing one or more metals other than noble metals selected from the group of chromium, antimony, lead, bismuth, silicon, vanadium, barium, zirconium, calcium, and aluminum in the same manner as the organic compounds of the above-mentioned noble metals. The organic noble metal compound and organometallic compound selected from α-terpineol, dibutyl calpitol, menthanol, toluene, etc. are dissolved to obtain a suitable viscosity for easy application of a variety of noble metal coatings. It is prepared by adding a common organic solvent that can be made into a solution.

また、必要によりバインダとしてエポキシ樹脂、フェノ
ール樹脂、ロジン等の樹脂を適量加えることで粘度を調
製し塗布膜の安定化が得られ、貴金属以外の金属の焼成
時の蒸発を抑制させる効果がある。
Furthermore, if necessary, by adding an appropriate amount of a resin such as an epoxy resin, phenol resin, or rosin as a binder, the viscosity can be adjusted and the coating film can be stabilized, which has the effect of suppressing the evaporation of metals other than noble metals during firing.

以上で調製した溶液を塗布、乾燥、焼成することで、ダ
イヤモンド上に貴金属の0.05〜0.3μmの薄膜を
形成させることができ、該塗布の方法は筆ぬり法、スプ
レ法、デイピング法、スクリーン印刷法等の方法を用い
ることができる。
By applying, drying, and firing the solution prepared above, a thin film of 0.05 to 0.3 μm of precious metal can be formed on the diamond. , screen printing method, or the like can be used.

乾燥温度は室温〜125℃で10分間行えばよく、焼成
温度は400〜600℃で10分間以上行えばよい。
The drying temperature may be from room temperature to 125°C for 10 minutes, and the firing temperature may be from 400 to 600°C for 10 minutes or more.

なお、貴金属成分が焼成して金属化させた際に酸化する
場合には必要により水素ガス雰囲気中で還元処理すれば
よいものである。
Note that if the noble metal component oxidizes when fired and metallized, reduction treatment may be performed in a hydrogen gas atmosphere if necessary.

以下、本発明に係わる実施例を記載するが、該実施例は
本発明を限定するものではない。
Examples related to the present invention will be described below, but the examples are not intended to limit the present invention.

(実施例1) カットされたダイヤモンドのカット面の3力所面に金溶
液を筆ぬり法により塗布し、室温で10分間乾燥したの
ち、500℃で10分間焼成したところ、金の0.15
μmの膜を形成させることができた。
(Example 1) A gold solution was applied to the cut surface of a cut diamond using a brush painting method, dried at room temperature for 10 minutes, and then fired at 500°C for 10 minutes.
It was possible to form a μm film.

該金の膜をビールテスト法で密着性を確認したところ、
20回繰り返し行っても剥がれることはなかった。
When the adhesion of the gold film was confirmed using the beer test method,
Even after repeating the process 20 times, it did not peel off.

ここで用いた金溶液の組成は、以下の割合で調製した。The composition of the gold solution used here was prepared in the following proportions.

有機金化合物(Au65wt%)   30wt%有機
ビスマス化合物(Bi20wt%)5wt%有機溶剤(
α−ターピネオール)   30wt%有機溶剤(ジブ
チルカルピトール)  20wt%エポキシ樹脂   
         5wt%フェノール樹脂     
      2wt%ロジン            
   8wt%(実施例2) カットされたダイヤモンドのカット面に白金溶液をスプ
レ法により塗布し、室温で10分間乾燥したのち、60
0℃で15分間焼成したところ、白金の0.Il、tm
の点在した膜を形成させることができた。
Organic gold compound (Au65wt%) 30wt%organobismuth compound (Bi20wt%) 5wt% organic solvent (
α-terpineol) 30wt% organic solvent (dibutylcarpitol) 20wt% epoxy resin
5wt% phenolic resin
2wt% rosin
8wt% (Example 2) A platinum solution was applied to the cut surface of a cut diamond by a spray method, dried at room temperature for 10 minutes, and then
When baked at 0°C for 15 minutes, the platinum content was 0. Il,tm
It was possible to form a film dotted with .

該白金の点在した膜をビールテスト法で密着性を確認し
たところ、20回繰り返し行っても剥がれることはなか
った。
When the adhesion of the platinum dotted film was confirmed by the beer test method, it did not peel off even after repeating the test 20 times.

ここで用いた白金溶液の組成は、以下の割合で調製した
The composition of the platinum solution used here was prepared in the following proportions.

有機白金化合物(Pt30wt%)  40wt%有機
クロム化合物(Cr7wt%)    1.wt%有機
アンチモン化合物(Sb10wt%)1wt%有機溶剤
(シクロヘキサノン)     l Owt%有機溶剤
にトロベンゼン)      48wt%(実施例3) カットされたダイヤモンドのカット面4ケ所にロジウム
溶液を筆塗り法により塗布し、室温で10分間乾燥した
のち、400℃で15分間焼成し次いで水素ガス雰囲気
中でIO分間還元したところ、ロジウムの0. 1μm
の点在した膜を形成させることができた。
Organoplatinum compound (Pt30wt%) 40wt%organochromium compound (Cr7wt%) 1. wt% organic antimony compound (Sb 10 wt%) 1 wt% organic solvent (cyclohexanone) l Owt% organic solvent and trobenzene) 48 wt% (Example 3) Rhodium solution was applied to four cut surfaces of a cut diamond using a brush painting method. After drying at room temperature for 10 minutes, it was calcined at 400°C for 15 minutes and then reduced in a hydrogen gas atmosphere for 10 minutes, resulting in 0.0% of rhodium. 1μm
It was possible to form a film dotted with .

該ロジウム膜をビールテスト法で密着性を確認したとこ
ろ、20回繰り返し行っても剥がれることはなかった。
When the adhesion of the rhodium film was confirmed by the beer test method, it did not peel off even after repeating the test 20 times.

ここで用いたロジウム溶液の組成は、以下の割合で調製
した。
The composition of the rhodium solution used here was prepared in the following proportions.

有機ロジウム化合物(Rh24wt%)40wt%有機
ビスマス化合物(Bi20wt%)5wt%有機バナジ
ウム化合物(V10wt%)5wt%有機溶剤(α−タ
ーピネオール)    30wt%有機溶剤(ジブチル
カルピトール)    5wt%アクリル樹脂    
         5wt%エチルセルロース    
      2wt%ニトロセルロース       
   8 w t%(実施例4) カットされたダイヤモンドのカット面に銀溶液を筆塗り
法により塗布し、室温で10分間乾燥したのち、500
℃で10分間焼成したところ、銀の0.5μn1の膜を
形成させることができた。
Organic rhodium compound (Rh 24 wt%) 40 wt% Organic bismuth compound (Bi 20 wt%) 5 wt% Organic vanadium compound (V10 wt%) 5 wt% Organic solvent (α-terpineol) 30 wt% Organic solvent (dibutyl calpitol) 5 wt% Acrylic resin
5wt% ethyl cellulose
2wt% nitrocellulose
8 wt% (Example 4) A silver solution was applied to the cut surface of a cut diamond using a brush coating method, and after drying at room temperature for 10 minutes, 500%
When baked at ℃ for 10 minutes, a 0.5 μn1 silver film could be formed.

該銀膜をビールテスト法で密着性を確認したところ、2
0回繰り返し行っても剥がれることはなかった。
When the adhesion of the silver film was confirmed using the beer test method, it was found that 2
It did not peel off even after repeating it 0 times.

ここで用いた銀溶液の組成は、以下の割合で調製した。The composition of the silver solution used here was prepared in the following proportions.

有機銀化合物(Ag20wt%)   50wt%有機
ビスマス化合物(Bi20wj%)5wt%有機溶剤(
α−ターピネオール)    30wt%アルキッド樹
脂          15wt%(発明の効果) 本発明は、以上に説明したように有機貴金属化合物を主
成分とした溶液を塗布、乾燥、焼成するという極めて簡
便な方法で、従来行うことができなかったダイヤモンド
に貴金属をコーティングすることが可能となり、従来と
は異なる個性層で多彩なものとなり、その利用は大いに
期待されるものである。
Organic silver compound (Ag20 wt%) 50 wt% organic bismuth compound (Bi20 wj%) 5 wt% organic solvent (
α-terpineol) 30 wt% Alkyd resin 15 wt% (Effects of the invention) As explained above, the present invention uses an extremely simple method of applying a solution containing an organic noble metal compound as a main component, drying, and baking. It has now become possible to coat diamonds with precious metals, which was previously impossible, and it has become possible to create a variety of products with a unique layer different from that of the past, and its use is highly anticipated.

Claims (2)

【特許請求の範囲】[Claims] (1)600℃以下で熱分解して金属または金属酸化物
となる有機貴金属化合物および有機金属化合物と必要で
あればバインダとしての樹脂を加えて有機溶剤に溶解し
た貴金属含有溶液をダイヤモンド上に塗布し、焼成する
ことを特徴とするダイヤモンド上への貴金属コーティン
グ方法。
(1) A solution containing noble metals dissolved in an organic solvent with the addition of organic noble metal compounds and organometallic compounds that thermally decompose to metals or metal oxides at 600°C or below and, if necessary, a resin as a binder, is applied onto the diamond. A method of coating a precious metal on a diamond, which is characterized by coating the diamond with a precious metal.
(2)前記有機金属化合物の金属成分がクロム、アンチ
モン、鉛、ビスマス、ケイ素、バナジウム、バリウム、
ジルコニウム、カルシウム、アルミニウムの群より選ば
れた1種以上である請求項1に記載のダイヤモンド上へ
の貴金属コーティング方法。
(2) The metal component of the organometallic compound is chromium, antimony, lead, bismuth, silicon, vanadium, barium,
The method for coating a diamond with a noble metal according to claim 1, wherein the noble metal is one or more selected from the group of zirconium, calcium, and aluminum.
JP25436089A 1989-09-29 1989-09-29 Method for coating diamond with noble metal Pending JPH03115582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25436089A JPH03115582A (en) 1989-09-29 1989-09-29 Method for coating diamond with noble metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25436089A JPH03115582A (en) 1989-09-29 1989-09-29 Method for coating diamond with noble metal

Publications (1)

Publication Number Publication Date
JPH03115582A true JPH03115582A (en) 1991-05-16

Family

ID=17263909

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25436089A Pending JPH03115582A (en) 1989-09-29 1989-09-29 Method for coating diamond with noble metal

Country Status (1)

Country Link
JP (1) JPH03115582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100644929B1 (en) * 2004-03-04 2006-11-13 한국원자력연구소 Method for preparing the colored diamond by ion implantation and heat treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100644929B1 (en) * 2004-03-04 2006-11-13 한국원자력연구소 Method for preparing the colored diamond by ion implantation and heat treatment

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