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Ce;LuAP BAKING BODY, POSITRON FAULT-MEASURING APPARATUS, AND METHOD FOR PRODUCING THE BAKING BODY
To provide a Ce;LuAP baking body that can be obtained by a ceramic-producing method, as a single-phase LuAP producing method, performing calcination without increasing temperature to a melting point, and to provide a method for producing the same.SOLUTION: A Ce;LuAP baking body comprises 0.01-0.1 mol% of Ce per mol of rare-earth element (Lu, Gd, Ce) in Ce;LuAP, wherein 20-30 at% of Lu is replaced with Gd. A method for producing the Ce;LuAP baking body includes a step 1 and a step 2. The step 1 includes: preparing Gd2O3, Lu2O3, Al2O3 and CeO2, blending Gd2O3 and Lu2O3 so that a molar ratio of (Gd2O3:Lu2O3) is 0.2:0.8 to 0.3:0.7, and blending CeO2 to be 0.02 mol% and more and 0.2 mol% or less based on a total substance amount (mol) of Lu2O3, Gd2O3 and CeO2, to obtain a mixture thereof; adding Al2O3 equivalent to the total substance amount of the mixture to the obtained mixture; and adding a binder, and then performing mixing, thereby preparing precursor powder. The step 2 includes producing a compact from the precursor powder, performing defatting, and baking the defatted compact at temperature of less than 1,900°C.SELECTED DRAWING: None
【課題】単相LuAP作製方法として、融点まで温度を上昇させずに焼成するセラミックスの作製方法により得られるCe;LuAP焼成体及びその製造方法を提供する。【解決手段】CeをCe;LuAP中の希土類元素（Lu、Gd、Ce）1mol当たり、0.01〜0.1mol%含み、Luの20〜30at%がGdで置換されたCe;LuAP焼成体。Ce;LuAP焼成体の製造方法は、Gd2O3、Lu2O3、Al2O3及びCeO2を準備し、Gd2O3及びLu2O3をmol比（Gd2O3：Lu2O3）が0.2：0.8〜0.3：0.7となるように配合し、かつCeO2をLu2O3、Gd2O3及びCeO2の合計の物質量（mol）に対し0.02mol%以上0.2mol%以下になるように配合した混合物に、該混合物の物質量（mol）に相当する量のAl2O3を加え、バインダーを添加して混練して原料粉を調製する工程1と、該原料粉から成形体を作製・脱脂し、1900℃未満の温度で焼成する工程2を有する。【選択図】なし
Ce;LuAP BAKING BODY, POSITRON FAULT-MEASURING APPARATUS, AND METHOD FOR PRODUCING THE BAKING BODY
To provide a Ce;LuAP baking body that can be obtained by a ceramic-producing method, as a single-phase LuAP producing method, performing calcination without increasing temperature to a melting point, and to provide a method for producing the same.SOLUTION: A Ce;LuAP baking body comprises 0.01-0.1 mol% of Ce per mol of rare-earth element (Lu, Gd, Ce) in Ce;LuAP, wherein 20-30 at% of Lu is replaced with Gd. A method for producing the Ce;LuAP baking body includes a step 1 and a step 2. The step 1 includes: preparing Gd2O3, Lu2O3, Al2O3 and CeO2, blending Gd2O3 and Lu2O3 so that a molar ratio of (Gd2O3:Lu2O3) is 0.2:0.8 to 0.3:0.7, and blending CeO2 to be 0.02 mol% and more and 0.2 mol% or less based on a total substance amount (mol) of Lu2O3, Gd2O3 and CeO2, to obtain a mixture thereof; adding Al2O3 equivalent to the total substance amount of the mixture to the obtained mixture; and adding a binder, and then performing mixing, thereby preparing precursor powder. The step 2 includes producing a compact from the precursor powder, performing defatting, and baking the defatted compact at temperature of less than 1,900°C.SELECTED DRAWING: None
【課題】単相LuAP作製方法として、融点まで温度を上昇させずに焼成するセラミックスの作製方法により得られるCe;LuAP焼成体及びその製造方法を提供する。【解決手段】CeをCe;LuAP中の希土類元素（Lu、Gd、Ce）1mol当たり、0.01〜0.1mol%含み、Luの20〜30at%がGdで置換されたCe;LuAP焼成体。Ce;LuAP焼成体の製造方法は、Gd2O3、Lu2O3、Al2O3及びCeO2を準備し、Gd2O3及びLu2O3をmol比（Gd2O3：Lu2O3）が0.2：0.8〜0.3：0.7となるように配合し、かつCeO2をLu2O3、Gd2O3及びCeO2の合計の物質量（mol）に対し0.02mol%以上0.2mol%以下になるように配合した混合物に、該混合物の物質量（mol）に相当する量のAl2O3を加え、バインダーを添加して混練して原料粉を調製する工程1と、該原料粉から成形体を作製・脱脂し、1900℃未満の温度で焼成する工程2を有する。【選択図】なし
Ce;LuAP BAKING BODY, POSITRON FAULT-MEASURING APPARATUS, AND METHOD FOR PRODUCING THE BAKING BODY
Ｃｅ；ＬｕＡＰ焼成体、ポジトロン断層測定装置及びその焼成体の製造方法
MURAYAMA HIROTO (author)
2020-12-17
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
G01T
MEASUREMENT OF NUCLEAR OR X-RADIATION
,
Messung von Kern- oder Röntgenstrahlung
/
G21K
TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR
,
Verfahren und Vorrichtungen zur Handhabung von Teilchen oder ionisierender Strahlung, soweit nicht anderweitig vorgesehen
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