JP2978428B2 - Scale-like colored titanium particles and powder comprising the particles - Google Patents
Scale-like colored titanium particles and powder comprising the particlesInfo
- Publication number
- JP2978428B2 JP2978428B2 JP7280793A JP28079395A JP2978428B2 JP 2978428 B2 JP2978428 B2 JP 2978428B2 JP 7280793 A JP7280793 A JP 7280793A JP 28079395 A JP28079395 A JP 28079395A JP 2978428 B2 JP2978428 B2 JP 2978428B2
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- JP
- Japan
- Prior art keywords
- particles
- titanium
- powder
- thickness
- color
- Prior art date
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Description
【０００１】[0001]
【発明の技術分野】本発明は、塗料の顔料、メタリック
塗料用の光輝材等の光輝材、あるいは装飾用着色材、化
粧品等として利用される所定色彩に着色されたチタン粒
子、および該粒子からなる粉体に関する。BACKGROUND OF THE INVENTION The present invention relates to pigment particles of paints, glittering materials such as glittering materials for metallic paints, or titanium particles colored in a predetermined color used as decorative coloring materials, cosmetics, and the like. Powder.
【０００２】[0002]
【従来の技術】従来、フレーク状顔料と呼ばれるアルミ
ニウム粉末、マイカ及びマイカにＴｉＯ2 をコーティン
グした顔料が用いられている。昭和５５年４月に発行さ
れた雑誌「チタニウム・ジルコニウム」のＶｏｌ．２８
Ｎｏ．２に掲載された論文「チタン表面に生成した大気
酸化処理皮膜の有用性」には、チタンの薄板材を大気中
で加熱すると、薄板材の表面に酸化皮膜層が形成され、
その加熱条件（酸化皮膜の厚さ）に対応して種々の色彩
に発色する旨が開示されている。2. Description of the Related Art Conventionally, pigments called flake pigments, aluminum powder, mica, and mica coated with TiO 2 have been used. Vol. Of the magazine "Titanium / Zirconium" published in April, 1980. 28
No. The article "Usefulness of Atmospheric Oxidized Film Generated on Titanium Surface" published in No. 2 states that when a titanium sheet is heated in air, an oxide layer is formed on the surface of the sheet.
It is disclosed that various colors are developed according to the heating conditions (the thickness of the oxide film).
【０００３】[0003]
【発明が解決しようとする課題】チタン金属粉末を大気
中で加熱することにより有彩色のチタン粉末が得られ
る。チタンは非常に酸化し易い金属であるが、その酸化
の進行についてはあまりよくしられていない。低い温度
で酸化すると所定色彩が発色しなかったり、比較的高温
で酸化すると着色の色ムラが生じる。また、時にはチタ
ン粉末が加熱時に燃焼することもある。着色の色ムラ
は、極端な場合は全く色がつかない粒子と着色した粒子
が混在して生ずるような場合もある。着色したチタン粉
末を塗料の顔料として使用する場合、意識的に異なる色
を合わせて、調色する場合がある。このような明らかに
色が異なる粒子に分かれる。調色する場合でも、元の彩
色粒子（顔料）は純粋であることが望ましい。A chromatic titanium powder can be obtained by heating a titanium metal powder in the atmosphere. Titanium is a metal that is very susceptible to oxidation, but its oxidation progress is not well known. When oxidized at a low temperature, a predetermined color does not develop, and when oxidized at a relatively high temperature, color unevenness occurs. Also, sometimes the titanium powder may burn during heating. In extreme cases, the color unevenness of coloring may be caused by a mixture of non-colored particles and colored particles. When a colored titanium powder is used as a pigment of a paint, there is a case where a different color is intentionally combined and toned. Such distinct colors are divided into different particles. Even when toning, it is desirable that the original colored particles (pigments) be pure.
【０００４】本発明はかかる不都合のない安定して所定
色彩に着色し、色むらの少ない着色チタン粒子、及び該
着色チタン粒子からなる粉体を提供することを目的とす
る。An object of the present invention is to provide colored titanium particles which are stably colored in a predetermined color without such inconvenience and have less color unevenness, and a powder comprising the colored titanium particles.
【０００５】[0005]
【課題を解決するための手段】本発明の着色チタン粒子
粉体は、粒子の表裏の平面部の状態が平滑であり、か
つ、周縁部が滑らかな形状を示す鱗片状の粒子であっ
て、該粒子の表層は２５〜２００ｎｍの範囲の均一な厚
さの酸化チタン皮膜層を有することを特徴とする。ここ
で平面部が平滑とは多孔質でないことをいう。更には、
光を正反射するような鏡面状であることが、より好まし
い。また、周縁部が滑らかな形状とは周縁が滑らかな曲
線でつながり深い切れ込みやギサギサがないことをい
う。Means for Solving the Problems The colored titanium particle powder of the present invention is a scaly particle in which the state of the flat surface on the front and back surfaces of the particle is smooth and the peripheral portion has a smooth shape, The surface layer of the particles has a titanium oxide film layer having a uniform thickness in the range of 25 to 200 nm. Here, a flat surface means that it is not porous. Furthermore,
It is more preferable that the mirror surface is specular so as to regularly reflect light. Further, the shape having a smooth peripheral portion means that the peripheral edge is connected by a smooth curve and there is no deep cut or jagged edge.
【０００６】[0006]
【発明の実施の形態】本発明の着色チタン粒子は、内部
が金属チタンとなり、表層は酸化チタン皮膜層となった
二層構造を形成し、表層の酸化皮膜の厚さによってその
発色する色彩が異なる。この着色チタン粒子は鱗片形状
であるため、キラキラとした光輝感を与える。そして鱗
片形状の粒子の表裏の平面部の状態が平滑であるため、
より高い高輝度、鮮明性が得られる。また、鱗片形状の
粒子の周縁部が滑らかな（ギザギザのない）形状を示す
ため、この点でも高輝度、鮮明性が高くなっている。BEST MODE FOR CARRYING OUT THE INVENTION The colored titanium particles of the present invention form a two-layer structure in which the inside is titanium metal and the surface layer is a titanium oxide film layer, and the color developed by the thickness of the surface oxide film is changed. different. Since the colored titanium particles are in the form of scales, they give a glittering glitter. And because the state of the plane part on the front and back of the scale-shaped particles is smooth,
Higher brightness and sharpness can be obtained. In addition, since the periphery of the flake-shaped particles has a smooth (non-jagged) shape, high brightness and high sharpness are also achieved in this regard.
【０００７】酸化チタン皮膜層の厚みは２５〜２００ｎ
ｍの範囲の均一な厚さで、かつ着色チタン粒子の径が１
３０μｍ以下、厚さが５μｍ以下であることが好まし
い。酸化チタン皮膜層が、着色チタン粒子の所定の色彩
に応じて、２５〜２００ｎｍの範囲内の均一な厚さであ
るため、均一でかつ鮮明な任意の色彩を発現することが
できる。なお、酸化チタン皮膜層の厚さと発現する色彩
との関係については、前記従来技術の文献にも紹介され
ており（１０〜２５ｎｍが黄色、２５〜７０ｎｍが青
色、７０〜１５０ｎｍが青緑色、１７０ｎｍ以上白
色）、酸化条件を適宜選択することで酸化チタン皮膜層
の厚さを調整して所望の色彩とすることができる。The thickness of the titanium oxide film layer is 25 to 200 n
m, and the diameter of the colored titanium particles is 1
It is preferable that the thickness be 30 μm or less and the thickness be 5 μm or less. Since the titanium oxide film layer has a uniform thickness in the range of 25 to 200 nm according to the predetermined color of the colored titanium particles, a uniform and clear arbitrary color can be expressed. The relationship between the thickness of the titanium oxide film layer and the color developed is also introduced in the above-mentioned prior art document (10 to 25 nm is yellow, 25 to 70 nm is blue, 70 to 150 nm is bluish green, 170 nm By appropriately selecting the oxidation conditions, the thickness of the titanium oxide film layer can be adjusted to obtain a desired color.
【０００８】前記酸化チタン粒子の径が１３０μｍ以
下、厚さが５μｍ以下と適当であるため、高級感のある
光輝性と豊かな色彩感を発現できる。特に塗膜や繊維に
用いる場合、現用の使用条件に合致するサイズである。
また、粗大粒子の混入がないため、粗大粒子に起因する
反射光のキメの粗さがなく、高級感が確保される。鱗片
状とは、鱗のような薄板状の形状を言う。その平面形状
は円形、楕円形、角形、不定型等、特に限定がないが、
たとえば、塗膜中では平行層状に配向し易いと言う理由
から、特に円形が良い。平面形状の周縁部はギザギザの
ない滑らかな形状が良い。周縁部が滑らかでないと、粒
子や粉末どうしの滑りが悪く、例えば塗膜中で平行層状
にならずに起立した角度になる粒子もあり、このため光
輝性や色の鮮明性等が損なわれるので好ましくない。Since the titanium oxide particles have an appropriate diameter of 130 μm or less and a thickness of 5 μm or less, high-quality glitter and rich color can be exhibited. In particular, when used for a coating film or a fiber, the size is suitable for current use conditions.
In addition, since there is no mixing of coarse particles, there is no roughness of the texture of the reflected light due to the coarse particles, and a sense of quality is secured. The scaly shape means a thin plate-like shape like a scale. Its planar shape is not particularly limited, such as circular, elliptical, square, irregular, etc.
For example, a circular shape is particularly preferred because it is easy to orient in a parallel layer in a coating film. The periphery of the planar shape preferably has a smooth shape without jaggedness. If the peripheral part is not smooth, particles and powder will not slide smoothly, for example, some particles will not stand in a parallel layer form in the coating film but have an upright angle, and this will impair glittering and color clarity etc. Not preferred.
【０００９】粒子の表裏の平面部の状態は、平滑、即ち
凹凸の少ない水平な面であることが好ましく、平滑が欠
けると、光輝性の減少、塗色の不均一性という不具合を
生じる。粒子の外周形状は、楕円状、より好ましくは円
形状が良い。また、より具体的には、粒子は鱗片状の径
が１３０μｍ以下、厚さが５μｍ以下アスペクト比が２
５以上であるのが好ましい。金属チタン粒子の厚さは、
平均で５μｍ以下、特に個々の粒子の厚さが５μｍ以下
であることが好ましい。粒子がこれより厚いと、厚みの
部分は光を反射し難いため、全体として濁った暗い感じ
の色になり、光輝性も損なわれる。The state of the front and back flat portions of the particles is preferably smooth, that is, a horizontal surface with few irregularities. If the smoothness is lacking, problems such as a decrease in glitter and non-uniform coating colors occur. The outer shape of the particles is preferably elliptical, more preferably circular. More specifically, the particles have a scale-like diameter of 130 μm or less, a thickness of 5 μm or less, and an aspect ratio of 2 μm or less.
It is preferably 5 or more. The thickness of the metal titanium particles is
It is preferable that the average particle size is 5 μm or less, and in particular, the thickness of each particle is 5 μm or less. If the particles are thicker than this, the thicker portions hardly reflect light, so that the overall color becomes cloudy and dark, and the glitter is also impaired.
【００１０】以上の点から、着色チタン粒子のアスペク
ト比については、約２５程度以上、特に４０程度が好適
である。アスペクト比がこの程度であると、光輝性が優
れ、薄すぎることによる扱い性の悪さも回避できる。但
し、意図的に陰のある輝きを発現させる場合には、上記
アスペクト比はより小さくともよいが、アスペクト比は
少なくとも１５以上必要である。[0010] From the above points, the aspect ratio of the colored titanium particles is preferably about 25 or more, particularly preferably about 40. When the aspect ratio is at this level, the brilliancy is excellent, and poor handling due to being too thin can be avoided. However, in order to intentionally exhibit shaded brightness, the aspect ratio may be smaller, but the aspect ratio must be at least 15 or more.
【００１１】着色チタン粒子の粉体における個々の粒子
の径と厚さ、及び、平均の径と厚さは上記の通りである
が、実際の使用にあたっては、例えば全粒子の５％程度
の範囲内で、形状あるいは平面部の平滑度の不良な粒子
が混入することは許される。本発明の着色チタン粒子粉
体は、所定の条件を備えた金属チタン粒子を圧延処理し
て鱗片状の金属チタン粒子とし、この金属チタン粒子を
酸化雰囲気中で加熱処理することにより表層部に所定状
態の酸化チタン層を生成させることで得られる。The diameter and thickness of the individual particles in the powder of the colored titanium particles and the average diameter and thickness thereof are as described above. However, in actual use, for example, a range of about 5% of all the particles is used. It is permissible for particles having poor shape or flatness to be mixed therein. The colored titanium particle powder of the present invention is obtained by rolling metal titanium particles having predetermined conditions into flaky metal titanium particles, and heating the metal titanium particles in an oxidizing atmosphere to a predetermined amount on the surface layer. It is obtained by generating a titanium oxide layer in a state.
【００１２】鱗片状の金属チタン粒子の製造には、例え
ばスポンジチタンのように多孔質、非塊状のものは不適
当である。なぜなら、粒子を圧延して鱗片化した時、そ
の粒子の表裏の平面部に面の平滑性が出ず、かつ粒子の
周縁部の形状がギザギザになるからであり、更に色彩の
にごり感の原因となる非鱗片状の微粉末を生ずるので好
ましくない。したがって、原料としては、金属チタンの
無孔質でかつ塊状の粒子、特に金属チタンのアトマイズ
化球状粒子が最適である。前記した最適サイズの鱗片粒
子を得るには、アトマイズ化球状粒子の径が６μｍ〜４
０μｍの範囲がが最適である。このアトマイズ化球状粒
子とは、チタンを加熱溶融した溶湯流れに高圧ガスを作
用させて噴霧するというプロセスにより製造された球状
の粒子をいう。For the production of flaky metal titanium particles, porous and non-lumpy particles such as titanium sponge are not suitable. The reason is that when the particles are rolled and flaked, the surface does not have smoothness on the front and back planes of the particles, and the shape of the peripheral edge of the particles is jagged, which further causes the smell of color. This is not preferable because a non-scale-like fine powder is produced. Therefore, as the raw material, nonporous and massive particles of titanium metal, particularly, atomized spherical particles of titanium metal are most suitable. In order to obtain the above-mentioned scale particles having the optimum size, the diameter of the atomized spherical particles is from 6 μm to 4 μm.
The range of 0 μm is optimal. The atomized spherical particles refer to spherical particles produced by a process of spraying a molten metal stream obtained by heating and melting titanium by applying a high-pressure gas thereto.
【００１３】圧延処理には、原料粒子を鱗片状に圧延で
きる処理であれば、その種類を問わない。原料粒子のサ
イズとの関係からは、実質的に考えられる処理はボール
ミル、圧延、スタンプミル等であるが、特にボールミル
による処理が最適である。ボールミル処理の場合、例え
ばポット容量が４００ｃｃ、粉末の仕込み量が２０ｇ、
分散剤が６０ｃｃであれば、鋼球のサイズは直径が１０
〜２０ｍｍ程度、ボールミルの運転条件は、回転速度が
６０ｒｐｍで、２０時間程度が好ましい。処理条件が過
剰であると、粉末形状の不規則化、粉末の平面部の平滑
性の減少、過剰に微細な粉末の生成等の不具合を生ず
る。処理条件が不足であると、生産粉末のアスペクト比
が不足し易い。The type of the rolling process is not particularly limited as long as the raw material particles can be rolled into flakes. From the relation with the size of the raw material particles, substantially conceivable treatments are a ball mill, rolling, a stamp mill, etc., but the treatment by a ball mill is particularly optimal. In the case of ball milling, for example, the pot capacity is 400 cc, the charged amount of powder is 20 g,
If the dispersant is 60 cc, the size of the steel ball is 10
The operation conditions of the ball mill are preferably about 20 hours at a rotation speed of 60 rpm. Excessive processing conditions may cause problems such as irregularities in the powder shape, a decrease in the smoothness of the flat portion of the powder, and generation of an excessively fine powder. If the processing conditions are insufficient, the aspect ratio of the produced powder tends to be insufficient.
【００１４】ボールミルのポット容量と原料粒子の仕込
み量、鋼球のサイズと鋼球の使用量、ボールミルの回転
数等は必要に応じて適宜に設定される。この際に使用す
る分散剤は、公知あるいは常用されるものを適宜に設定
すれば良いが、例えば脂肪酸、特にオレイン酸の使用は
好適である。加熱処理では、鱗片状の金属チタン粒子
を、所定の条件下、空気中で、あるいはその他の酸化雰
囲気中で加熱する。加熱処理の条件の選択により表層の
酸化チタン層の厚さが変わり、これにより発現する色彩
も変わる。均一な厚さの酸化チタン層は、均一で鮮明な
発色のための条件であるが、そのためには、比較的低い
温度（例えば４００℃程度）で加熱して均一な厚さの酸
化チタン層を形成させて濃い黄金色に発色させる。この
処理によって酸化チタン層が安定化する。濃い黄金色を
望む場合はこれにて処理を終えるが、その他の色彩を望
む場合は一旦かかる処理をしてから、所望の色彩に応じ
た温度で更に加熱する方法が好ましい。かかる方法によ
り、粒子の内部まで酸化層が及びことを防止でき、か
つ、チタン粒子の燃焼も有効に防止できる。The pot capacity of the ball mill and the charged amount of the raw material particles, the size of the steel balls and the amount of the used steel balls, the number of revolutions of the ball mill, and the like are appropriately set as required. The dispersant used at this time may be a known or commonly used dispersant, and for example, a fatty acid, particularly oleic acid, is preferably used. In the heat treatment, the flaky metal titanium particles are heated under predetermined conditions in air or another oxidizing atmosphere. The thickness of the surface titanium oxide layer changes depending on the selection of the conditions of the heat treatment, and the color developed thereby also changes. The titanium oxide layer having a uniform thickness is a condition for uniform and vivid color development. For this purpose, the titanium oxide layer having a uniform thickness is heated at a relatively low temperature (for example, about 400 ° C.). It forms and develops a deep golden color. This treatment stabilizes the titanium oxide layer. If a deep golden color is desired, the process is finished here, but if another color is desired, it is preferable to perform such a process once and then further heat at a temperature according to the desired color. According to such a method, it is possible to prevent the oxide layer from reaching the inside of the particles, and also effectively prevent the titanium particles from burning.
【００１５】[0015]
【実施例】以下、実施例により具体的に説明する。 ＜実施例＞粒径２５μｍ、粒径３５μｍおよび粒径３０
μｍの３種類のチタンアトマイズ粉末を使用した。The present invention will be specifically described below with reference to examples. <Example> Particle size 25 μm, particle size 35 μm and particle size 30
Three kinds of titanium atomized powder of μm were used.
【００１６】ボールミルとして、ポット容量が４０００
ｃｃでポット材質がジルコニア、ボールとして、φ１
０．０ｍｍのステンレスボール１０ｋｇを使用した。こ
のポット中に、前記チタンアトマイズ粉末の１種類６０
０ｇと、分散剤としてオレイン酸９００ｇを加えた。そ
してこのジルコニアポットを遊星ミルに設置し、公転１
００（ｒｐｍ）、自転１５０（ｒｐｍ）で駆動し、３〜
８時間運転した。その後粉末とボールとを分別し、圧延
粉末をアセトンを用いてオレイン酸を洗浄除去した。そ
して得られた粉末を１００℃に設定した乾燥機で２０時
間乾燥した。このようにして、上記した３種類のチタン
アトマイズ粉末を圧延処理した。As a ball mill, the pot capacity is 4000
cc, pot material is zirconia, ball, φ1
10 kg of a 0.0 mm stainless steel ball was used. In this pot, one kind of the titanium atomized powder 60
0 g and oleic acid 900 g as a dispersant were added. And this zirconia pot is installed on a planetary mill,
00 (rpm), rotation at 150 (rpm),
We ran for 8 hours. Thereafter, the powder and the balls were separated, and the rolled powder was washed with acetone to remove oleic acid. Then, the obtained powder was dried with a dryer set at 100 ° C. for 20 hours. Thus, the above-mentioned three types of titanium atomized powder were subjected to rolling treatment.
【００１７】このようにして３種類の鱗片状のチタン粒
子粉体を得た。これら３種類の鱗片状のチタン粒子粉体
の平均粒径および平均厚さは、５０μｍと１．５μｍ、
１００μｍと２．２μｍおよび７０μｍと２．５μｍで
あった。次に、これら３種類の鱗片状のチタン粒子粉体
を原料として使用し、加熱炉として管状ニクロム炉を用
い、ステンレス製のボートに粉末を載せて大気中（炉口
片側開放）で５００℃、１０００℃、１５００℃および
２０００℃で加熱した。加熱条件は、１０℃／時間の昇
温速度で４００℃まで加熱し、４００℃で１時間保持し
た。その後５０℃／時間の昇温速度で５００℃まで加熱
し、実施例１では５００℃で１時間保持した。実施例２
では５００℃で４時間保持した。実施例３では５００℃
で１２時間保持した。実施例４では５００℃で２０時間
保持した。その後、炉より取り出し、空気中で放冷し
た。これにより表１に示す各色に着色したチタン粉末が
得られた。Thus, three types of scale-like titanium particle powder were obtained. The average particle size and average thickness of these three types of flaky titanium particle powder are 50 μm and 1.5 μm,
They were 100 μm and 2.2 μm and 70 μm and 2.5 μm. Next, using these three types of flaky titanium particle powder as a raw material, using a tubular nichrome furnace as a heating furnace, placing the powder on a stainless steel boat, and placing the powder at 500 ° C. in air (opening one side of the furnace opening), Heated at 1000 ° C, 1500 ° C and 2000 ° C. The heating conditions were heating to 400 ° C. at a rate of 10 ° C./hour and holding at 400 ° C. for 1 hour. Thereafter, the sample was heated to 500 ° C. at a temperature rising rate of 50 ° C./hour, and was maintained at 500 ° C. for 1 hour in Example 1. Example 2
Was held at 500 ° C. for 4 hours. 500 ° C. in Example 3.
For 12 hours. In Example 4, the temperature was maintained at 500 ° C. for 20 hours. Then, it was taken out of the furnace and allowed to cool in the air. As a result, titanium powder colored in each color shown in Table 1 was obtained.
【００１８】加熱酸化膜厚は、オージェ電子分光法によ
る表面酸素分析及び分光測色法による光学的干渉厚みで
測定した。そして表１に示す、４種類の鱗片状の着色チ
タン粒子粉体を得た。なお、表１には各鱗片状の着色チ
タン粒子粉体の平均粒径、平均厚さ、酸化層厚さおよび
色彩を纏めて示す。The thickness of the thermally oxidized film was measured by surface oxygen analysis by Auger electron spectroscopy and optical interference thickness by spectral colorimetry. Then, four types of scale-like colored titanium particle powders shown in Table 1 were obtained. Table 1 summarizes the average particle size, average thickness, oxide layer thickness, and color of each flaky colored titanium particle powder.
【００１９】[0019]
【表１】 表１に示すように加熱酸化層の厚みが５０〜２００ｎｍ
の範囲で、鱗片状粉末の粒径が１３０μｍ以下、および
厚みが５μｍ以下であると光輝度に優れ、色むらのない
着色チタン粒子が得られた。[Table 1] As shown in Table 1, the thickness of the heating oxide layer is 50 to 200 nm.
When the particle size of the flaky powder was 130 μm or less and the thickness was 5 μm or less, colored titanium particles having excellent light luminance and no color unevenness were obtained.
【００２０】[0020]
【発明の効果】本発明の着色チタン粒子は、キラキラと
した光輝感が優れ、かつ、発色の鮮明さや、各粒子にお
ける発色度合いの均一さが良好である。この着色チタン
粒子は、さらに、無彩色を含めた任意の色彩を発現する
ことができる。、特に高級なメタリック感が得られる。
また、多くの用途において現用の使用条件に合致するサ
イズである。The colored titanium particles of the present invention are excellent in glittering brilliancy, good in sharpness of color development, and uniform in the degree of color development in each particle. The colored titanium particles can further develop any color including an achromatic color. Particularly, a high-grade metallic feeling can be obtained.
In addition, the size is suitable for current use conditions in many applications.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 水谷 克彌 愛知県名古屋市中村区名駅４丁目７番23 号 豊田通商株式会社内 (72)発明者 森 盛 兵庫県尼崎市東浜町１番地 住友シチッ クス株式会社内 (56)参考文献 特開 平９−125102（ＪＰ，Ａ) 特開 平７−268598（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C23C 8/10 - 8/16 B22F 9/00,9/08 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsuya Mizutani 4-7-23 Meiji Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Toyota Tsusho Co., Ltd. (72) Inventor Mori Mori 1 Higashihama-cho, Amagasaki-shi, Hyogo (56) References JP-A-9-125102 (JP, A) JP-A-7-268598 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C23C 8 / 10-8/16 B22F 9/00, 9/08
Claims (4)
かつ、周縁部が滑らかな形状を示す鱗片状の粒子であっ
て、該粒子の表層は２５〜２００ｎｍの範囲の厚さの酸
化チタン皮膜層を有することを特徴とする着色チタン粒
子。(1) The state of the front and back flat portions of the particles is smooth,
The colored titanium particles are scale-like particles having a smooth peripheral portion, and the surface of the particles has a titanium oxide film layer having a thickness in the range of 25 to 200 nm.
載の鱗片状着色チタン粒子。2. The flaky colored titanium particles according to claim 1, wherein the flaky shape is a circular shape.
下、厚さが５μｍ以下アスペクト比が２５以上である請
求項１に記載の鱗片状着色チタン粒子。3. The flaky colored titanium particles according to claim 1, wherein the particles have a flaky diameter of 130 μm or less, a thickness of 5 μm or less and an aspect ratio of 25 or more.
ン粒子からなることを特徴とする粉体。4. A powder comprising the colored titanium particles according to claim 1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280793A JP2978428B2 (en) | 1995-10-27 | 1995-10-27 | Scale-like colored titanium particles and powder comprising the particles |
| EP96935445A EP0796688A1 (en) | 1995-10-27 | 1996-10-25 | Bright metallic titanium particles, method of manufacturing same, bright coloring titanium particles using same, method of heating and coloring same, and powder composed of these titanium particles |
| PCT/JP1996/003122 WO1997015412A1 (en) | 1995-10-27 | 1996-10-25 | Bright metallic titanium particles, method of manufacturing same, bright coloring titanium particles using same, method of heating and coloring same, and powder composed of these titanium particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280793A JP2978428B2 (en) | 1995-10-27 | 1995-10-27 | Scale-like colored titanium particles and powder comprising the particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09125222A JPH09125222A (en) | 1997-05-13 |
| JP2978428B2 true JP2978428B2 (en) | 1999-11-15 |
Family
ID=17630048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7280793A Expired - Fee Related JP2978428B2 (en) | 1995-10-27 | 1995-10-27 | Scale-like colored titanium particles and powder comprising the particles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2978428B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1039352B1 (en) * | 1999-03-26 | 2003-10-08 | Rolex Sa | Self-compensating spring for clockwork movement spring balance and method for treating the same |
-
1995
- 1995-10-27 JP JP7280793A patent/JP2978428B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09125222A (en) | 1997-05-13 |
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