JPS60180975A - Black coloring process for zirconia ceramic - Google Patents
Black coloring process for zirconia ceramicInfo
- Publication number
- JPS60180975A JPS60180975A JP59033757A JP3375784A JPS60180975A JP S60180975 A JPS60180975 A JP S60180975A JP 59033757 A JP59033757 A JP 59033757A JP 3375784 A JP3375784 A JP 3375784A JP S60180975 A JPS60180975 A JP S60180975A
- Authority
- JP
- Japan
- Prior art keywords
- zirconia ceramic
- black coloring
- temperature
- zirconia
- coloring process
- 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.)
- Granted
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、ジルコニアセラミツクの黒色系着色法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for coloring zirconia ceramic in black color.
ジルコニアセラミツク（Ｐ．Ｓ．Ｚ．）はセラミツクの
中でもとりわけ靭性に優れ、金属に近く人した性質をも
つている。Zirconia ceramic (P.S.Z.) has particularly excellent toughness among ceramics, and has properties similar to metals.
このために、最近は庖丁等にも試用される様になり、用
途は工業用から家庭用まで広がりつつある。For this reason, it has recently been used in kitchen knives, etc., and its uses are expanding from industrial to household use.
この様に用途が多様化するにつれて、本来の機能の外に
色彩的な要素も要求される様になり、着色が必要になつ
てきた。As the uses have diversified in this way, color elements have come to be required in addition to the original function, and coloring has become necessary.
セラミツクの着色は、一般的には無機酸化物等の顔料を
添加、焼成することにより、行われるが、これは必然的
に性能の低下、特に、強度の低下をもたらす。この中で
特に黒色系の着色は、何種類もの顔料を添加する必要が
あるために、この傾向は顕微になる。Ceramics are generally colored by adding pigments such as inorganic oxides and firing, but this inevitably results in a decrease in performance, particularly in strength. Among these, especially black coloring requires the addition of several types of pigments, so this tendency becomes more noticeable.
機能性が最も要求されるジルコニアセラミツクにあつて
は、顔料添加は好しいことではない。とりわけ市場のニ
ーズの高い黒色系の着色では、これが必要になつてくる
。In the case of zirconia ceramics, where functionality is most required, the addition of pigments is not desirable. This is especially necessary for black coloring, which has high market needs.
本発明は、以上の様な状況に鑑みてなされたものであり
、顔料は何ら添加することなく、ジルコニア本来の機能
を損わずに、重厚な黒色系（スチールブラツク）の着色
を施す方法を提供せんとするものである。The present invention was made in view of the above circumstances, and provides a method for coloring zirconia with a deep black color (steel black) without adding any pigment and without impairing the original function of zirconia. This is what we intend to provide.
本発明は、以上の様な目的のもとになされたものであり
、その要旨とする所は、ジルコニアセラミツクを焼成し
た後、還元雰囲気で、特に１１００℃以上、好しくは１
２００℃以上、焼成温度以下の温度で熱処理することを
特徴とするジルコニアセラミツクの黒色系着色法である
。The present invention has been made based on the above-mentioned objectives, and its gist is that after zirconia ceramic is fired, it is heated at a temperature of 1,100°C or higher, preferably at a temperature of 1,100°C or higher, in a reducing atmosphere.
This is a black coloring method for zirconia ceramic, which is characterized by heat treatment at a temperature of 200°C or higher and lower than the firing temperature.
次に本発明を実施例によつて詳細に説明する。Next, the present invention will be explained in detail by way of examples.
＜実施例＞
安定化剤としてＹ２Ｏ３（３モル％）を添加した部分安
定化ジルコニア（Ｐ．Ｓ．Ｚ．）を１５５０℃で焼成し
た後、水素炉中、それぞれ次の温度で熱処理を行つた。<Example> Partially stabilized zirconia (P.S.Z.) to which Y2O3 (3 mol%) was added as a stabilizer was fired at 1550°C, and then heat treated in a hydrogen furnace at the following temperatures. .
熱処理温度と着色状況および材料特性（曲げ強度）の熱
化は、次表の通りである。The heat treatment temperature, coloring state, and material properties (bending strength) are shown in the following table.
以上の結果から、深みのある黒色は
概ね１１００℃近傍から現われ始め、１２００℃以上に
なると、重厚感のある鋼の様なスチールブラツクに変化
してくる。From the above results, a deep black color begins to appear around 1100°C, and when the temperature exceeds 1200°C, it changes to a steel black with a solid feel.
一方強度は、焼成温度付近までは、熱
処理前とほとんど変化がない。しかしこれを越えると、
本来の特性が消失してしまい、この新しい熱処理温度が
既新しい焼成温度になり、材料特性はこの新しい温度に
対応した値に変化する。On the other hand, the strength remains almost unchanged from before heat treatment up to around the firing temperature. But beyond this,
The original properties are lost, this new heat treatment temperature becomes the new firing temperature, and the material properties change to values corresponding to this new temperature.
従つて上限温度は、経済性、本来の材料特性の劣化等の
ことを考えれば、焼成温度以下にとどめる必要がある。Therefore, the upper limit temperature needs to be kept below the firing temperature in consideration of economic efficiency, deterioration of the original material properties, etc.
従つて、強度を損わず重厚感のある黒色を出すには１２
００℃以上、焼成温度以下の熱処理温度が適しているこ
とになる。Therefore, to create a deep black color without sacrificing strength, use 12
A heat treatment temperature of 00°C or higher and lower than the firing temperature is suitable.
尚ここで本発明の適用可能な材質の範囲であるが、基本
的には、実施例のＹ２Ｏ３安定化剤を使用したものの外
に、その他通常の安定化剤を使用するもの、および部分
安定化のみならず、安定化領域全搬適用できることは、
いうまでもないことである。The range of materials to which the present invention can be applied is basically those using the Y2O3 stabilizer of the example, materials using other ordinary stabilizers, and partially stabilized materials. Not only that, but it can also be applied to the entire stabilization area.
It goes without saying.
しかしながら、多くの安定化剤の中で、黒化促進性に関
しては、Ｙ２Ｏ３が最も優れている。However, among many stabilizers, Y2O3 is the most excellent in promoting blackening.
また上例では熱処理雰囲気として、水素雰囲気を使用し
たが、本発明はこれのみに限定されるものではなく、ジ
ルコニアセラミツクが実質的に還元されうる雰囲気であ
れば、全て適用できる。例えば、ＣＯやＨ２ガス等を微
量混合した不汚性雰囲気等がこの■ちゆうに入つてくる
。Further, in the above example, a hydrogen atmosphere was used as the heat treatment atmosphere, but the present invention is not limited to this, and any atmosphere can be applied as long as the zirconia ceramic can be substantially reduced. For example, an unclean atmosphere containing a small amount of CO, H2 gas, etc. enters this area.
本発明は、以上詳記した様に、材料特性をほとんど低下
させることなく、深みのある黒色系着色ができる方法で
あり、ジルコニアやセラミツクの今後の用途創出に大い
に寄与できるものである。As described in detail above, the present invention is a method that allows deep black coloring with almost no deterioration of material properties, and can greatly contribute to the creation of future uses for zirconia and ceramics.
特許出願人 株式会社香蘭社 代表者 深川正Patent applicant Koransha Co., Ltd. Representative Tadashi Fukagawa
Claims (1)
することを特徴とするジルコニアセラミツクの黒色系着
色法。A black coloring method for zirconia ceramic, which is characterized in that the zirconia ceramic is heat-treated in a reducing atmosphere after firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59033757A JPS60180975A (en) | 1984-02-25 | 1984-02-25 | Black coloring process for zirconia ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59033757A JPS60180975A (en) | 1984-02-25 | 1984-02-25 | Black coloring process for zirconia ceramic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60180975A true JPS60180975A (en) | 1985-09-14 |
| JPH0367983B2 JPH0367983B2 (en) | 1991-10-24 |
Family
ID=12395298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59033757A Granted JPS60180975A (en) | 1984-02-25 | 1984-02-25 | Black coloring process for zirconia ceramic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60180975A (en) |
-
1984
- 1984-02-25 JP JP59033757A patent/JPS60180975A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0367983B2 (en) | 1991-10-24 |
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