JPH04214788A - Scintillator member and production thereof - Google Patents
Scintillator member and production thereofInfo
- Publication number
- JPH04214788A JPH04214788A JP41038290A JP41038290A JPH04214788A JP H04214788 A JPH04214788 A JP H04214788A JP 41038290 A JP41038290 A JP 41038290A JP 41038290 A JP41038290 A JP 41038290A JP H04214788 A JPH04214788 A JP H04214788A
- Authority
- JP
- Japan
- Prior art keywords
- scintillator
- powder
- scintillator member
- filling
- binder
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims abstract description 52
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 229910052793 cadmium Inorganic materials 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 238000007796 conventional method Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、複合シンチレータ部材
およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite scintillator member and a method for manufacturing the same.
【０００２】0002
【従来の技術】シンタレーターは、シンタレーター粉末
を焼結した焼結体シンチレーター部材、単結晶部材、ま
たはシンチレーター粉末をエポキシ樹脂等の充填結合材
中に分散させた複合シンチレーター部材等がある。BACKGROUND OF THE INVENTION Examples of scintillators include sintered scintillator members made of sintered scintillator powder, single crystal members, and composite scintillator members made of scintillator powder dispersed in a filler binder such as epoxy resin.
【０００３】焼結体シンチレーター部材は、複合シンチ
レータ部材に比べて一般に発光効率が大きいという特徴
を有する（特開昭５８−２０４０８８号、特開昭５９−
３０８８３号等参照）。[0003] Sintered scintillator members generally have a higher luminous efficiency than composite scintillator members (Japanese Patent Laid-Open No. 58-204088, JP-A No. 59-1999).
30883 etc.).
【０００４】しかし、シンチレーター粉末の種類（組成
）によっては焼結が困難である場合がある。However, depending on the type (composition) of the scintillator powder, sintering may be difficult.
【０００５】したがって、このような難焼結材の場合に
は複合シンチレーター部材として使用される。この複合
シンチレーター部材は、通常溶融状態にしたエポキシ樹
脂等の充填結合材の中にシンチレーター粉末を分散させ
た後充填結合材を固化させる手法、あるいはシンチレー
ター粉末と充填結合材粉末を単に混合した後充填結合材
を融解・脱泡した後に固化させる方法によって製造され
ている。[0005] Therefore, such difficult-to-sinter materials are used as composite scintillator members. This composite scintillator member is usually produced by dispersing scintillator powder in a filler binder such as molten epoxy resin and then solidifying the filler binder, or by simply mixing the scintillator powder and filler binder powder and then filling. It is manufactured by a method in which the binding material is melted, defoamed, and then solidified.
【０００６】[0006]
【発明が解決しようとする課題】しかし、従来の方法に
よって製造された複合シンタレーター部材は、シンチレ
ーター粉末が部材全体に占める割合（充填率）が高々４
０％程度であり、発光効率が劣る。[Problems to be Solved by the Invention] However, in composite scintillator members manufactured by conventional methods, the proportion (filling rate) of scintillator powder in the entire member is at most 4.
It is about 0%, and the luminous efficiency is poor.
【０００７】これは、前者の方法においては、エポキシ
樹脂等の充填結合材が溶融状態であっても極めて高粘度
でありシンチレーター粉末を分散させるのに限界がある
こと、後者の方法においても充填結合材が高粘度である
ために脱泡を十分に行うことが困難で充填結合材固化後
に空孔が残存し、充填率が低かった。This is because in the former method, the filler binder such as epoxy resin has an extremely high viscosity even in a molten state, and there is a limit to dispersing the scintillator powder. Due to the high viscosity of the material, it was difficult to degas it sufficiently, and pores remained after the filling binder solidified, resulting in a low filling rate.
【０００８】本発明は、シンチレーター粉末の充填率を
高めた複合シンチレーター部材及びその製造方法の提供
を課題とする。An object of the present invention is to provide a composite scintillator member with an increased filling rate of scintillator powder and a method for manufacturing the same.
【０００９】[0009]
【課題を解決するための手段】本発明は、シンチレータ
ー粉末と充填結合材粉末を混合した後、この混合粉末を
加圧成形し、しかる後に得られた加圧成形体のうち充填
結合材を加熱溶融し、次いで溶融状態にある充填結合材
を冷却固化させることを特徴とするシンチレーター部材
の製造方法である。[Means for Solving the Problems] The present invention involves mixing a scintillator powder and a filling binder powder, then press-molding the mixed powder, and then heating the filling binder in the obtained press-molded body. This method of manufacturing a scintillator member is characterized by melting and then cooling and solidifying the filling binder in the molten state.
【００１０】本発明方法において、シンチレーター粉末
と充填結合材粉末との混合粉末を加圧成形し、高密度の
加圧成形体を得る点が最大の特徴である。The most important feature of the method of the present invention is that a mixed powder of scintillator powder and filler binder powder is press-molded to obtain a high-density press-molded body.
【００１１】従来の溶融状態の充填結合材にシンチレー
ター粉末を分散・固化させる方法や充填結合材粉末とシ
ンチレーター粉末とを単に混合して充填結合材のみを溶
融させる通常の方法で得られる固体複合体のシンチレー
ター粉末の充填率は、３５〜４５％程度に過ぎない。本
発明の方法によると加圧成形により、シンチレーター粉
末と充填結合材粉末とから構成される高密度の成形体を
得る。[0011] A solid composite obtained by a conventional method of dispersing and solidifying scintillator powder in a molten filler binder, or by a conventional method of simply mixing filler binder powder and scintillator powder and melting only the filler binder. The filling rate of the scintillator powder is only about 35 to 45%. According to the method of the present invention, a high-density molded body composed of scintillator powder and filler binder powder is obtained by pressure molding.
【００１２】この高密度の成形体は、同量のシンタレー
ター粉末及び充填結合材粉末を単に混合した状態に比べ
体積が小さく、したがって前記高密度成形体におけるシ
ンタレーター粉末の充填率は単なる混合粉末に比べて高
い。具体的には、５０〜６５％の充填率を得ることがで
きる。[0012] This high-density molded body has a smaller volume than a state in which the same amount of sinter powder and filler binder powder are simply mixed. Therefore, the filling rate of the sinter powder in the high-density molded body is smaller than that of a simple mixed powder. high compared to Specifically, a filling rate of 50 to 65% can be obtained.
【００１３】この高充填成形体の充填結合材を加熱して
溶融状態にさせ、その後冷却固化させることにより、シ
ンチレーター粉末の充填率が５０〜６５％の複合シンチ
レーター部材を得ることができる。A composite scintillator member having a filling rate of scintillator powder of 50 to 65% can be obtained by heating the filling binder of this highly filled molded body to a molten state and then cooling and solidifying it.
【００１４】本発明において、用いるシンチレーター粉
末は発光効率の点から、（Ｚｎ，Ｃｄ）Ｓ：Ａｇまたは
Ｇｄ２Ｏ２Ｓ：Ｐｒ，Ｃｅ，Ｆが望ましい。In the present invention, the scintillator powder used is preferably (Zn, Cd)S:Ag or Gd2O2S:Pr,Ce,F from the viewpoint of luminous efficiency.
【００１５】また、充填結合材としては、透光性材、よ
り具体的にはエポキシ樹脂，ポリックス樹脂または水ガ
ラスが使用される。[0015] Also, as the filling binding material, a translucent material, more specifically, an epoxy resin, a polyx resin, or water glass is used.
【００１６】[0016]
【実施例】（１）平均粒径４０μｍの（Ｚｎ，Ｃｄ）Ｓ
：Ａｇシンチレーター粉末をエポキシ樹脂粉末と均一に
混合した。この混合粉末をゴム袋に入れ、１ｔ／ｃｍ２
の圧力でＣＩＰ（Ｃｏｌｄ Ｉｓｏｓｔａｔｉｃ Ｐｒ
ｅｓｓｉｎｇ 冷間静水圧プレス）成形し、（Ｚｎ，
Ｃｄ）Ｓ：Ａｇ粉末の充填率が６５％の高密度成形体を
得た。加熱によってエポキシ樹脂粉末を加熱溶融した後
、冷却する方法によって、（Ｚｎ，Ｃｄ）Ｓ：Ａｇ粉末
・エポキシ樹脂固体複合体を得た。この複合体における
（Ｚｎ，Ｃｄ）Ｓ：Ａｇ粉末の充填率は約６３％であっ
た。一方、高圧成形しない従来法の場合の（Ｚｎ，Ｃｄ
）Ｓ：Ａｇ粉末・エポキシ樹脂固体複合体における（Ｚ
ｎ，Ｃｄ）Ｓ：Ａｇ粉末の充填率は３９％であり、本発
明の方法による充填率の約６２％に過ぎなかった。これ
らの複合体にＸ線を照射し、背面に達する光をシリコン
ホトダイオードで光度測定を行った結果、本発明による
複合体では、従来法に比べて約５５％高い光度を得るこ
とができた。[Example] (1) (Zn, Cd)S with an average particle size of 40 μm
:Ag scintillator powder was uniformly mixed with epoxy resin powder. Put this mixed powder in a rubber bag and
CIP (Cold Isostatic Pr) at a pressure of
(cold isostatic pressing) and (Zn,
A high-density compact with a filling rate of Cd)S:Ag powder of 65% was obtained. A solid composite of (Zn, Cd)S:Ag powder and epoxy resin was obtained by heating and melting the epoxy resin powder and then cooling it. The filling rate of (Zn, Cd)S:Ag powder in this composite was about 63%. On the other hand, in the case of the conventional method without high-pressure molding (Zn, Cd
) S: (Z
The filling rate of the n,Cd)S:Ag powder was 39%, which was only about 62% of the filling rate by the method of the present invention. As a result of irradiating these composites with X-rays and measuring the light intensity of the light reaching the back surface using a silicon photodiode, the composites according to the present invention were able to obtain approximately 55% higher luminous intensity than the conventional method.
【００１７】（２）平均粒径５０μｍのＧｄ２Ｏ２Ｓ：
Ｐｒ，Ｃｅ，Ｆシンタレーター粉末をポリックス樹脂粉
末と均一に混合した。この混合粉末をゴム袋に入れ、１
．５ｔ／ｃｍ２の圧力でＣＩＰ成形し、Ｇｄ２Ｏ２Ｓ：
Ｐｒ，Ｃｅ，Ｆ粉末の充填率が６７％の高密度成形体を
得た。
加熱によってポリックス樹脂粉末をにとした後、冷却す
る方法によって、Ｇｄ２Ｏ２Ｓ：Ｐｒ，Ｃｅ，Ｆ粉末・
ポリックス樹脂固体複合体を得た。この複合体における
Ｇｄ２Ｏ２Ｓ：Ｐｒ，Ｃｅ，Ｆ粉末の充填率は、約６６
％であった。一方、高圧成形しない従来法の場合のＧｄ
２Ｏ２Ｓ：Ｐｒ，Ｃｅ，Ｆ粉末・ポリックス樹脂固体複
合体におけるＧｄ２Ｏ２Ｓ：Ｐｒ，Ｃｅ，Ｆ粉末の充填
率は４１％であり、本発明の方法による充填率の約６２
％に過ぎなかった。これらの複合体にＸ線を照射し、背
面に達する光をシリコンホトダイオードで光度測定を行
ったところ、本発明による複合体では、従来法に比べて
約５７％高い光度を得ることができた。(2) Gd2O2S with an average particle size of 50 μm:
The Pr, Ce, F sintering powder was uniformly mixed with the polyx resin powder. Put this mixed powder in a rubber bag and
．． CIP molded at a pressure of 5t/cm2, Gd2O2S:
A high-density molded body with a filling rate of Pr, Ce, and F powders of 67% was obtained. Gd2O2S:Pr,Ce,F powder is made by heating the polyx resin powder and then cooling it.
A polyx resin solid composite was obtained. The filling rate of Gd2O2S:Pr,Ce,F powder in this composite is about 66
%Met. On the other hand, in the case of the conventional method without high-pressure molding, Gd
The filling rate of Gd2O2S:Pr,Ce,F powder in the 2O2S:Pr,Ce,F powder/polyx resin solid composite is 41%, which is about 62% of the filling rate by the method of the present invention.
It was only %. When these composites were irradiated with X-rays and the light reaching the back surface was measured with a silicon photodiode, the composites according to the present invention were able to obtain approximately 57% higher luminosity than the conventional method.
【００１９】[0019]
【発明の効果】本発明によれば、従来不十分であった固
体複合体における主成分粉末の充填率を増加させること
ができる。これによって、シンチレーター複合体の場合
には、その発光出力を著しく増加させることが可能とな
った。その結果、イメージセンサ用シンチレーター等に
用いるとＳ（シグナル）／Ｎ（ノイズ）の改善された画
像が得られ、微細異物検査等における分解能の改善が得
られた。According to the present invention, it is possible to increase the filling rate of the main component powder in a solid composite, which has been insufficient in the past. This has made it possible, in the case of scintillator complexes, to significantly increase their luminescence output. As a result, when used in scintillators for image sensors, etc., images with improved S (signal)/N (noise) were obtained, and resolution improved in fine foreign matter inspection, etc.
Claims (8)
を混合した後、この混合粉末を加圧成形し、しかる後に
得られた加圧成形体のうち充填結合材を加熱溶融し、次
いで溶融充填結合材を冷却固化させることを特徴とする
シンチレーター部材の製造方法。Claim 1: After mixing the scintillator powder and the filler binder powder, the mixed powder is pressure-molded, and then the filler binder in the obtained press-molded body is heated and melted, and then the molten filler binder is A method for producing a scintillator member, comprising cooling and solidifying the scintillator member.
Ｃｄ）Ｓ：ＡｇまたはＧｄ２Ｏ２：Ｐｒ，Ｃｅ，Ｆであ
る請求項１に記載のシンチレーター部材の製造方法。[Claim 2] The scintillator (powder) comprises (Zn,
The method for producing a scintillator member according to claim 1, wherein the scintillator member is Cd)S:Ag or Gd2O2:Pr, Ce, F.
１または２いずれかに記載のシンチレーター部材の製造
方法。3. The method for manufacturing a scintillator member according to claim 1, wherein the filling binder is a translucent material.
ス樹脂または水ガラスのいずれか１種または２種以上で
ある請求項３記載のシンチレーター部材の製造方法。4. The method for producing a scintillator member according to claim 3, wherein the light-transmitting material is one or more of epoxy resin, polyx resin, and water glass.
持する充填結合材からなる複合シンチレーター部材であ
って、シンチレーター粉末の充填率が５０％以上である
ことを特徴とする複合シンチレーター部材。5. A composite scintillator member comprising scintillator powder and a filling binding material for dispersing and holding the scintillator powder, characterized in that the filling rate of the scintillator powder is 50% or more.
）Ｓ：ＡｇまたはＧｄ２Ｏ２：Ｐｒ，Ｃｅ，Ｆである請
求項５記載のシンチレーター部材。6. The scintillator powder contains (Zn, Cd
) S:Ag or Gd2O2:Pr, Ce, F. The scintillator member according to claim 5.
５または６に記載のシンチレーター部材。7. The scintillator member according to claim 5, wherein the filler binder is a translucent material.
ス樹脂または水ガラスのいずれか１種または２種以上で
ある請求項７記載のシンチレーター部材。8. The scintillator member according to claim 7, wherein the light-transmitting material is one or more of epoxy resin, polyx resin, and water glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41038290A JPH04214788A (en) | 1990-12-13 | 1990-12-13 | Scintillator member and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41038290A JPH04214788A (en) | 1990-12-13 | 1990-12-13 | Scintillator member and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04214788A true JPH04214788A (en) | 1992-08-05 |
Family
ID=18519552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41038290A Pending JPH04214788A (en) | 1990-12-13 | 1990-12-13 | Scintillator member and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04214788A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003083010A1 (en) * | 2002-03-28 | 2003-10-09 | Hitachi Chemical Co.,Ltd. | Phosphor and phosphor composition containing the same |
| JP2005350672A (en) * | 2004-06-10 | 2005-12-22 | General Electric Co <Ge> | Compositions and methods for scintillator arrays |
| US7329370B2 (en) | 2003-10-22 | 2008-02-12 | Korea Advanced Institute Of Science And Technology | Transparent polycrystalline ceramic scintillators and methods of preparing the same |
| US20110303852A1 (en) * | 2010-06-14 | 2011-12-15 | Saint-Gobain Ceramics & Plastics, Inc. | Scintillator including a scintillator particulate and a polymer matrix |
-
1990
- 1990-12-13 JP JP41038290A patent/JPH04214788A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003083010A1 (en) * | 2002-03-28 | 2003-10-09 | Hitachi Chemical Co.,Ltd. | Phosphor and phosphor composition containing the same |
| US7122129B2 (en) | 2002-03-28 | 2006-10-17 | Hitachi Chemical Co., Ltd. | Fluorescent substance and fluorescent composition containing the same |
| US7329370B2 (en) | 2003-10-22 | 2008-02-12 | Korea Advanced Institute Of Science And Technology | Transparent polycrystalline ceramic scintillators and methods of preparing the same |
| JP2005350672A (en) * | 2004-06-10 | 2005-12-22 | General Electric Co <Ge> | Compositions and methods for scintillator arrays |
| US20110303852A1 (en) * | 2010-06-14 | 2011-12-15 | Saint-Gobain Ceramics & Plastics, Inc. | Scintillator including a scintillator particulate and a polymer matrix |
| US8633449B2 (en) * | 2010-06-14 | 2014-01-21 | Saint-Gobain Ceramics & Plastics, Inc. | Scintillator including a scintillator particulate and a polymer matrix |
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