JPS5941444A - Decorative sintered hard alloy - Google Patents

Abstract

PURPOSE:To provide a decorative sintered hard alloy showing novel appearance, obtained by a method wherein particles comprising compounds of a transition metals belonged to the Group IVa, Va of the Periodic Table and different in color tones are mixed and a metal binder component is added to the obtained mixture to perform sintering. CONSTITUTION:One kind or more particle with a particle size of about 0.3- 3mm.phi comprising a sintered hard alloy based on carbide, nitride of a transition metal belonged to the Group IVa, Va of the Periodic Table and tungsten carbide or a compound thereof is used and a metal binder component is added to particles comprising systems respectively different in color tones to perform sintering. By this method, a new hard alloy wherein a silver white color and a yellowish white color are mixed is easily formed. In this case, as the silver white color type compound, TiC, ZrC, HfC, VC, WC or the like are represented and, as the yellowish white type compound, TbC, TaC, TiN, ZrN, HfN, VN, NbN, TaN or the like are represented.

Description

【発明の詳細な説明】 本発明は、従来にない外観をつくシ出すことによシ付加
価値を高めた装飾用超硬合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative cemented carbide that has increased added value by providing an appearance that has never existed before.

一般に、装飾用合金に要求される主な性質と１では、 （１）表面光沢が良好で長い間、その外観が保たれるこ
と。In general, the main properties required for decorative alloys are: (1) Good surface gloss and long-lasting appearance.

（２）使用環境によって腐食、変色が生じないこと。(2) No corrosion or discoloration will occur depending on the usage environment.

（３）色調に特徴があり、又材料自体に価値があること
。(3) The color tone is characteristic and the material itself has value.

等があげられる。etc. can be mentioned.

従来使用されている装飾用合金には、Ｗａ系やＴａＯ系
の超硬合金、　Ｎｉ合金、　Ｃｏ合金系の硬質合金、１
８に、１４に、１０に合金等の金合金。Conventionally used decorative alloys include Wa-based and TaO-based cemented carbides, Ni alloys, Co-based hard alloys, and 1.
8, 14, and 10 are gold alloys such as alloys.

さらにはステンレス鋼や黄銅への各種メッキ品等があり
、これらの合金は、ネックレス、イヤリング、指輪、ブ
レスレット、ウォッチケース、ライター等の装身具類に
広く用いられている。しかし、装飾的な要求が多様化す
るにつれ、可能ならば上記の（１）〜（３）までの要求
を同時に満たしさらに新しいイメージを演出できる様な
新しい装飾合金が要求されている。Furthermore, there are various types of plated stainless steel and brass, and these alloys are widely used in jewelry such as necklaces, earrings, rings, bracelets, watch cases, and lighters. However, as decorative requirements become more diverse, there is a need for new decorative alloys that, if possible, can simultaneously satisfy requirements (1) to (3) above and create a new image.

本発明は、この課題を解決するもので、従来単一色の超
硬しかなかったものをバイカラーあるいはトリカラーし
た超硬合金に関するものである。The present invention solves this problem and relates to a bicolor or tricolor cemented carbide, which was conventionally available only in a single color.

その具体的内容は、下記の通りである。The specific contents are as follows.

本発明は周期律表の４８および５ａ族の遷移金属の炭化
物および窒化物、並びに炭化タングステン（以下化合物
と略す）、又は前述の化合物を主成分とり、ｆ超硬合金
からなる０６〜３簡φの粒子を１種又は２種以上用い、
そこにその粒子と色調の異なる前述の化合物と金属バイ
ンダー成分を添加して焼結すること全特徴とする従来に
ない外観の装飾超硬合金をつくろうとするものである。The present invention mainly consists of carbides and nitrides of transition metals in groups 48 and 5a of the periodic table, as well as tungsten carbide (hereinafter referred to as compounds), or the above-mentioned compounds, and is made of f cemented carbide. using one or more types of particles,
The purpose is to create a decorative cemented carbide with an unprecedented appearance, which is characterized by adding the above-mentioned compounds having different grains and colors and a metal binder component and sintering them.

本発明の特徴は、炭化物又は窒化物あるいはそれらを主
成分として製造した超硬合金により、０．３〜５ｇＢＦ
Ｂの粒子に、それとは色調の異なる系の炭化物又は窒化
物の粉末を主成分と金属バインダーを用いて焼結するこ
とに関するものであシ、この方法によシ、銀白色と黄白
色が入り混った新しい概念の超硬を容易に形成すること
ができた。The feature of the present invention is that 0.3 to 5 gBF
This method involves sintering carbide or nitride powders with different color tones using a main component and a metal binder, and this method produces silvery white and yellowish white particles. It was possible to easily form a new concept of mixed carbide.

本発明で述べる周期律表の４ａおよび５Ｂ族の遷移金属
の炭化物および蟹化物及び炭化タングステンのうち、銀
白色系の化合物はＴｉＣ，ＺｒＯ。Among the carbides and tungsten carbides of transition metals in Groups 4a and 5B of the periodic table mentioned in the present invention, the silver-white compounds are TiC and ZrO.

ＨｆＯ，ＶＣ，、Ｗｅ等であシ、黄金色系の化合物は、
ＮｂＯ，Ｔａ、Ｏ，Ｔ１Ｎｉ、ＺｒＮ、ＨｆＮ、ＶＮ、
ＮｂＮ、ＴａＮ等である。Golden-colored compounds such as HfO, VC, We, etc.
NbO, Ta, O, T1Ni, ZrN, HfN, VN,
NbN, TaN, etc.

以下に、本発明による合金を実施例によシ説明する。In the following, the alloy according to the present invention will be explained by way of examples.

実施例１ 原料粉末として、平均粒径Ｑ、７ｍｍのＴａ０粒子を平
均粒径１．６μｍのｗＣ粉末と、平均粒径３μのバイン
ダー金属全第１表に示す最終成分組成を持つように混合
し、真空雰囲気中で３００〜１４００℃で１時間焼結し
、さらに、１３５０℃、１５００気圧で熱間静水圧プレ
スを行うことによ）本発明合金を製造した。この合金に
ついて、ダイヤモンド研削盤［Ｊ：る荒研削及びラップ
盤によるランプ仕上げを行った。これを、工ＳＯ（国際
標準化機構）規格に則した人工汗（ＰＨ＝４．７）’を
腐食液として使用し、温度４０℃士２℃に保持した前記
人工汗中に銅面研磨した試片の下半分を２４時間浸漬し
、前記研磨方面にくもりが発生するか否かを観察する耐
食試験を行ったところ特に変色等の問題は生じなかった
。さらに上記合金を用いてウォッチ用の胴を製作し、カ
バーガラス、裏ぶた等を組み込んだ後、コンクリート上
へ落下した場合にも、１．０ｍの高さまで割れ等の問題
を生ぜず実用上の問題はなかった。本合金は、耐食性、
耐衝撃性共に問題がなく、さらに硬度的にもＨｙ＝１３
００以上を有するため、実用上の傷等が生じることは全
くなかった。この様に、従来の超硬合金と同等の各種特
性を有していながら、本合金は、ＴａＣの黄金色の粒の
周囲ｆＷｏ−Ｃｏ−Ｏｒ系の銀白色系の超硬合金がとシ
まく、新しいイメージの超硬合金をつくることができた
。Example 1 As a raw material powder, Ta0 particles with an average particle size Q of 7 mm were mixed with wC powder with an average particle size of 1.6 μm and a binder metal with an average particle size of 3 μm so as to have the final component composition shown in Table 1. The alloy of the present invention was produced by sintering at 300 to 1400°C for 1 hour in a vacuum atmosphere, and then hot isostatic pressing at 1350°C and 1500 atm. This alloy was subjected to rough grinding using a diamond grinder [J:] and ramp finishing using a lapping machine. This was tested by polishing the copper surface in the artificial sweat, which was kept at a temperature of 40°C to 2°C, using artificial sweat (PH = 4.7) as a corrosive liquid in accordance with SO (International Organization for Standardization) standards. A corrosion resistance test was conducted in which the lower half of the piece was immersed for 24 hours and observed whether clouding occurred on the polished side, and no problems such as discoloration occurred. Furthermore, even if a watch body is manufactured using the above alloy and a cover glass, case back, etc. are assembled and the case is dropped onto concrete, there will be no cracking or other problems up to a height of 1.0 m, which is a practical problem. There was no. This alloy has corrosion resistance,
There is no problem with impact resistance, and in terms of hardness, Hy=13
00 or more, no scratches or the like occurred during practical use. In this way, although it has various properties equivalent to conventional cemented carbide, this alloy has a silvery white cemented carbide based on the fWo-Co-Or system surrounding the golden grains of TaC. , we were able to create a new type of cemented carbide.

実施例２ 原料粉末として、平均粒径２．０μｍのｗｅ粉末と３．
０μｍの１３ｗｔ％Ｎｉ　、　２ｗｔ％Ｏｒによシ圧粉
。Example 2 As raw material powders, we powder with an average particle size of 2.0 μm and 3.
0μm 13wt%Ni, 2wt%Or powder.

焼結、熱間静水圧を実施例１と同様の条件で行い、その
合金を平均粒径２ｍに粉砕し、この粗粒に平均粒径１．
８μ？ｎのＴａ、Ｏと平均粒径６μｍの金属バインダー
を第２表に示す最終成分組成を持つように混合し、実施
例１と同様の条件で焼結を行うことによυ、本発明合金
を製造した。この合金を実施例１と同様の条件で研磨を
行い、同様の評価を行った。その結果、耐食性、耐衝撃
性、硬度等に特に問題はなかった。本合金は、従来の超
硬合金と同等の各種特性を有しながら、ｗｅ系の銀白色
超硬粒のまわシラ、ＴａＣ系の黄金色の超硬合金がとシ
まく、新しい色調の超硬合金をつくることができた。こ
の合金を、ペンダントに用いたところ、従来にない高級
感のある新素材として用いることができた。Sintering and hot isostatic pressing were carried out under the same conditions as in Example 1, and the alloy was ground to an average particle size of 2 m, and the coarse particles had an average particle size of 1.0 m.
8μ? The alloy of the present invention was prepared by mixing n of Ta and O and a metal binder with an average particle size of 6 μm so as to have the final component composition shown in Table 2, and sintering it under the same conditions as in Example 1. Manufactured. This alloy was polished under the same conditions as in Example 1 and evaluated in the same manner. As a result, there were no particular problems with corrosion resistance, impact resistance, hardness, etc. This alloy has various properties equivalent to conventional cemented carbide, but it has a new color tone of carbide, with We-based silver-white cemented carbide grains and TaC-based golden-yellow cemented carbide. I was able to make an alloy. When this alloy was used in a pendant, it was possible to use it as a new material with an unprecedented sense of luxury.

実施例３ 原料粉末として、平均粒径０．６〜３％のＴａ０粒子、
ＴｉＮ粒子、ＨｆＮ粒子を平均粒径１．５μｍのＴｉｅ
粉末と平均粒径１．８μｍのＴｉＮ粉末と、平均粒径３
，０μｍの金属バインダーを実施例１と同様の工程で焼
結し、超硬合金を作成した。この合金を実施例１と同様
の条件で研磨を行い、同様の評価を行った。その結果、
耐食性、耐衝撃性、硬度等特に問題はなく、従来の超硬
合金と同等の各種特性を有しながら、黄金色が微妙に異
なるＴａｇ。Example 3 As raw material powder, Ta0 particles with an average particle size of 0.6 to 3%,
TiN particles and HfN particles with an average particle size of 1.5 μm
Powder and TiN powder with an average particle size of 1.8 μm and an average particle size of 3
, 0 μm metal binder was sintered in the same process as in Example 1 to create a cemented carbide. This alloy was polished under the same conditions as in Example 1 and evaluated in the same manner. the result,
Tag has no particular problems with corrosion resistance, impact resistance, hardness, etc., and has the same properties as conventional cemented carbide, but its golden color is slightly different.

ＴｉＮ、ＨｆＮ粒子がＴｉＣ系の白色超硬の中に分散し
ている新しい合金をつくることができた。We were able to create a new alloy in which TiN and HfN particles are dispersed in TiC-based white cemented carbide.

実施例４ 原料粉末として、平均粒径１．０箇のｗｅ粒子に平均粒
径１．５　ｆｉｍのＴｉＮとＮｂＯとｖａの粉末に、平
均粒径３μｍの金属バインダーを第４表に示す最終成分
組成を持つように混合し、実施例１と同様の工程で焼結
を行うことによシ、本発明合金を製造した。これも、実
施例１〜６と同様の特性を有し銀白色のｗｅ粒子を黄金
色系のＴｉＮ系超硬合金がと９囲む合金をつくることが
できた。Example 4 As the raw material powder, the final components shown in Table 4 were We particles with an average particle size of 1.0, TiN, NbO, and VA powders with an average particle size of 1.5 fim, and a metal binder with an average particle size of 3 μm. The alloy of the present invention was manufactured by mixing the components so as to have the same composition and sintering them in the same process as in Example 1. This also made it possible to produce an alloy having properties similar to those of Examples 1 to 6, in which silvery-white we particles were surrounded by golden-colored TiN-based cemented carbide.

上述の様に、本発明による超硬合金は、装飾用部品に要
求される特性をすべて備えているのみならず、複色超合
金として、従来［ｆｉい外観をもつものをつくることが
できた。As mentioned above, the cemented carbide according to the present invention not only has all the properties required for decorative parts, but also can be made as a multi-colored superalloy with a sharper appearance than conventional ones. .

第　　１　　表 第２表 第　　５　　表 第　　４　　表 出願人　株式会社諏訪精工舎 代理人　弁理士　最上　　務Table 1 Table 2 Table 5 Table 4 Applicant: Suwa Seikosha Co., Ltd. Agent Patent Attorney Mogami

Claims (1)

【特許請求の範囲】[Claims] 周期律表の４ａおよび５ａ族の遷移金属の炭化物および
窒化物、並びに炭化タングステン（以下化合物と略す）
、又は前述の化合物を主成分とした超硬合金からなる粒
子を１種又は２種以上用い、そこにその粒子と色調の異
なる前述の化合物と金属バインダー成分を添加して焼結
することを特徴とする装飾用超硬合金。Carbides and nitrides of transition metals in groups 4a and 5a of the periodic table, and tungsten carbide (hereinafter abbreviated as compounds)
, or by using one or more types of particles made of cemented carbide containing the above-mentioned compound as a main component, adding thereto the above-mentioned compound and a metal binder component having a different color tone from the particles, and sintering the particles. Decorative cemented carbide.