JPH0524974B2 - - Google Patents
Info
- Publication number
- JPH0524974B2 JPH0524974B2 JP7362084A JP7362084A JPH0524974B2 JP H0524974 B2 JPH0524974 B2 JP H0524974B2 JP 7362084 A JP7362084 A JP 7362084A JP 7362084 A JP7362084 A JP 7362084A JP H0524974 B2 JPH0524974 B2 JP H0524974B2
- Authority
- JP
- Japan
- Prior art keywords
- hardness
- tac
- golden
- present
- sintered
- 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 - Lifetime
Links
Description
本発明は、時計枠、タイピン、ネツクレス等の
装飾部材用として用いる黄金色の焼結材料に関す
るものである。
従来から用いられている金合金（14K、18K）
の硬さは、通常Hv200位で、硬質のものにあつて
も高々Hv300程度である為に、耐摩耗性の点で問
題があり、各種装飾部材として用いた場合に、傷
が付き易いという欠点があつた。
本発明では、上記金合金の有する欠点を解消
し、耐摩耗性に優れ、しかも耐食性にも富む黄金
色の焼結材料を提供せんとするものであり、その
要旨は、TaCおよびTiNを少なくとも5wt％より
なるTaCとTiN混合組成が10〜77wt％、TiC、
WC、NbCの少なくとも１種が１〜5wt％、Ni及
び又はCoが１〜5wt％、Cu1〜5wt％、残部がAu
なる組成の装飾部材用焼結材料である。
以下、本発明材料を開発するに際して行なつた
試験並びにその結果を示す。
平均粒径1.1μｍのTaC、平均粒子径1.1μｍの
TiN、同1.1μｍのTiC、同1.0μｍのWC、同2.0μｍ
のNbC、同2.8μｍのNi、同1.4μｍのCo、同10μｍ
のAu、及び350メツシユのCuを、それぞれ第１
表に示す様な割合に配合したものを、湿式ボール
ミルで72時間混合、乾燥後、パラフインを添加
し、1.5ton／cm2でプレス成形をし、5.5mm×10mm
×30mmの成形品を得た。更にこの成形品を真空雰
囲気800℃で予備焼結を行ない、パラフインを除
去した後、第１表に示す各温度で５×10-2mmHg
の真空度で30〜60分間の焼結を行なつた。この焼
結品をダイヤモンド砥石で研削した後、硬さを測
定した。又ダイヤモンド砥石で研削後、更にラツ
ピングを行なつて耐食性試験、色調の観察を行な
つた。
The present invention relates to a golden-colored sintered material used for decorative members such as watch frames, tie pins, and necklaces. Traditionally used gold alloys (14K, 18K)
The hardness of the material is usually around Hv200, and even if it is hard, it is around Hv300 at most, so there is a problem in terms of wear resistance, and when used as various decorative materials, it is easily scratched. It was hot. The present invention aims to eliminate the drawbacks of the above-mentioned gold alloys and provide a golden-colored sintered material with excellent wear resistance and corrosion resistance. TaC and TiN mixed composition consisting of 10~77wt%, TiC,
At least one of WC and NbC is 1 to 5 wt%, Ni and or Co is 1 to 5 wt%, Cu is 1 to 5 wt%, and the balance is Au.
This is a sintered material for decorative members having the following composition. Tests conducted in developing the material of the present invention and their results are shown below. TaC with an average particle size of 1.1μm, TaC with an average particle size of 1.1μm
TiN, 1.1μm TiC, 1.0μm WC, 2.0μm
NbC, 2.8μm Ni, 1.4μm Co, 10μm
of Au and 350 mesh of Cu, respectively, in the first
The mixture in the proportions shown in the table was mixed in a wet ball mill for 72 hours, dried, paraffin was added, and press molded at 1.5 tons/cm 2 to 5.5 mm x 10 mm.
A molded product of ×30 mm was obtained. Furthermore, this molded product was pre-sintered at 800℃ in a vacuum atmosphere to remove paraffin, and then sintered at 5×10 -2 mmHg at each temperature shown in Table 1.
Sintering was carried out for 30 to 60 minutes at a vacuum degree of . After grinding this sintered product with a diamond grindstone, the hardness was measured. Furthermore, after grinding with a diamond grindstone, lapping was performed, and a corrosion resistance test and color tone observation were performed.
【表】【table】
【表】
ここで、本発明材料の各成分量の適正値を、上
記試験結果を勘案して考察する。即ち本発明材料
は、その色調が黄金色を呈するという事を必須要
件としているものであるから、Auの含有量を最
小でも20wt％とするものであり、一方、Auがあ
まり多すぎても実用上使いものにならない（装飾
部材として）ので、Auの最大量は18Kのそれに
相当する75wt％とするものである。この様に、
Auの含有量を限定した上で、TaCとTiNの混合
組成については10wt％より少なければ硬さが不
足し、耐摩耗性の点で問題があるし、TaCと
TiNの混合組成の最大量は下記するTiC、WC、
WbC、Ni、Co、Cu並びにAuのいずれをも最小
とした場合で、77wt％となるのである。ところ
でTiC、WC、NbCはそのいずれも黄金色ではな
いので、あまり多量には入れられないが、その硬
さがいずれもTaCよりは大であるので、少なく
とも1wt％含ませて焼結材料の硬さを維持する
が、これらを5wt％より多くすれば色調が黄金色
を外れるので、高々5wt％とする。Ni、Coは、
焼結性を高める為に最少1wt％は必要だが、5wt
％を越えると硬さが低下するので、5wt％に留め
る。又、Cuは焼結温度を下げるので焼結性を高
め、かつCuAuの折出硬化により硬さを高めるの
で、1wt％以下入れるが、あまり多いとCuが浸み
出すので、5wt％以下とする。
以上述べて来た如く、本発明材料は、その色調
が黄金色で、14K相当のAu58.3wt％のもので、
その硬さがHv400〜450であり、Au量が少なく
20wt％のものでは、Hv1000位あり、耐摩耗性に
優れている。
更に、従来の金合金は溶解法によつて製造して
いたのに対し、本発明材料は粉末冶金法によるの
で、従来法では製造し得なかつた組成の材料が得
られ、かつその大きさ（特に薄型化）も自在に調
整出来ると共に、耐食性にも優れているので、時
計枠、ライター、タイピン、カフスボタン、ネツ
クレス等の各種装飾部材用材料として最適であ
る。[Table] Here, the appropriate values for the amounts of each component in the material of the present invention will be discussed in consideration of the above test results. In other words, since the material of the present invention has a golden color tone as an essential requirement, the Au content should be at least 20 wt%. Since it is of no use (as a decorative member), the maximum amount of Au is 75wt%, which is equivalent to that of 18K. Like this,
After limiting the Au content, if the mixed composition of TaC and TiN is less than 10wt%, the hardness will be insufficient and there will be problems in terms of wear resistance.
The maximum amount of TiN mixed composition is TiC, WC,
When all of WbC, Ni, Co, Cu, and Au are minimized, it is 77wt%. By the way, TiC, WC, and NbC are not golden in color, so they cannot be added in large amounts, but their hardness is higher than TaC, so they should be added at least 1wt% to increase the hardness of the sintered material. However, if they are added more than 5wt%, the color tone will be out of golden yellow, so the amount should be at most 5wt%. Ni, Co are
A minimum of 1wt% is required to improve sinterability, but 5wt%
If it exceeds 5%, the hardness decreases, so keep it at 5wt%. In addition, Cu lowers the sintering temperature, increasing sinterability, and increases hardness through precipitation hardening of CuAu, so it should be added at 1wt% or less, but if it is too much, Cu will leach out, so it should be 5wt% or less. . As mentioned above, the material of the present invention has a golden color tone and is made of Au58.3wt% equivalent to 14K.
Its hardness is Hv400-450, and the amount of Au is small.
The 20wt% one has a Hv of around 1000 and has excellent wear resistance. Furthermore, while conventional gold alloys were produced by melting, the material of the present invention is produced by powder metallurgy, which makes it possible to obtain materials with compositions that could not be produced by conventional methods, and to reduce their size ( In particular, it can be adjusted freely (thinner) and has excellent corrosion resistance, making it ideal as a material for various decorative parts such as watch frames, lighters, tie pins, cufflinks, and net dress.
Claims (1)
TiC、WC、NbCの少なくとも１種が１〜5wt％、
Ni及びCoの少なくとも一種を合計１〜5wt％、
Cu1〜5wt％、残部がAuからなることを特徴とす
る装飾部材用焼結材料。1 TaC 5-38wt%, TiN 5-38wt%,
1 to 5 wt% of at least one of TiC, WC, and NbC,
A total of 1 to 5 wt% of at least one of Ni and Co,
A sintered material for decorative parts, characterized by comprising 1 to 5 wt% of Cu and the balance of Au.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7362084A JPS60218450A (en) | 1984-04-12 | 1984-04-12 | Sintered materials for decorative parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7362084A JPS60218450A (en) | 1984-04-12 | 1984-04-12 | Sintered materials for decorative parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60218450A JPS60218450A (en) | 1985-11-01 |
| JPH0524974B2 true JPH0524974B2 (en) | 1993-04-09 |
Family
ID=13523549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7362084A Granted JPS60218450A (en) | 1984-04-12 | 1984-04-12 | Sintered materials for decorative parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60218450A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2104746B1 (en) | 2006-12-15 | 2015-01-21 | Markus King | Method for production of individualized jewellery alloys |
| CN107190196B (en) * | 2017-06-09 | 2019-02-22 | 洛阳理工学院 | A kind of high wear-resistant alloy material for cutting tools and preparation method thereof |
-
1984
- 1984-04-12 JP JP7362084A patent/JPS60218450A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60218450A (en) | 1985-11-01 |
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