Mold and method of manufacturing GOS ceramic scintillator using the same

Patent metadata

Field	Value
Publication number	US-10654196-B2
Application number	US-201715815819-A
Country	US
Kind code	B2
Filing date	Nov 17, 2017
Priority date	Dec 26, 2016
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A mold and a method of manufacturing GOS ceramic scintillator by using the mold are provided. The mold comprises: a female outer sleeve having a cavity disposed inside; a plurality of female blocks disposed inside the cavity, the plurality of female blocks being put together to form a composite structure having a vertical through hole; and a male upper pressing head and a male lower pressing head, wherein each of the male upper pressing head and the male lower pressing head has a shape consistent with that of the vertical through hole. The disclosure may reduce defects of the related art in hot-pressing-sintering such as a mold has a short retirement period and a high material waste, significantly reduce the cost for production of the GOS ceramic scintillator, and significantly improve a process economy.

First claim

What is claimed is:

1. A mold for manufacturing a GOS ceramic scintillator, comprising:
a female outer sleeve having a cavity disposed inside;
a plurality of female blocks disposed inside the cavity, the plurality of female blocks being put together to form a composite structure having a vertical through hole; and
a male upper pressing head and a male lower pressing head, each of the male upper pressing head and the male lower pressing head having a shape consistent with a shape of the vertical through hole,
wherein an outer wall of the composite structure is pressed against an inner wall of the female outer sleeve, a contact face between said outer wall and said inner wall being angled relative to vertical; and
wherein the GOS ceramic scintillator is capable of withstanding a pressure of 100-200 MPa.

2. The mold according to claim 1 , wherein the inner wall of the female outer sleeve is a conical inner wall.

3. The mold according to claim 2 , wherein the composite structure has a shape of a cylinder or a round table.

4. The mold according to claim 1 , wherein the vertical through hole is a square through hole, a triangle through hole, or a round through hole.

5. The mold according to claim 1 , wherein the plurality of female blocks are in the same shape.

6. A method of manufacturing a GOS ceramic scintillator by using a mold of claim 1 , comprising steps of:
putting the plurality of female blocks together into the cavity of the female outer sleeve;
placing the male lower pressing head into the vertical through hole;
adding a GOS ceramic scintillator powder into the vertical through hole and onto the male lower pressing head;
in a direction opposite to a position of the male lower pressing head, placing the male upper pressing head into the vertical through hole; and
applying a force to each of the male upper pressing head and the male lower pressing head respectively, such that the GOS ceramic scintillator powder is pressed to form the GOS ceramic scintillator.

7. The method according to claim 6 , further comprising: disposing a spacer on each of contact faces of the male upper pressing head and the male lower pressing head with the GOS ceramic scintillator powder.

8. The method according to claim 6 , further comprising: disposing a spacer on the inner wall of the vertical through hole.

9. The method according to claim 6 , further comprising: coating a release agent onto a contact face of the outer wall of the composite structure and the inner wall of the female outer sleeve.

10. The method according to claim 6 , wherein the inner wall of the female outer sleeve is a conical inner wall.

11. The method according to claim 6 , wherein the composite structure has a shape of a cylinder or a round table.

12. The method according to claim 6 , wherein the vertical through hole is a square through hole, a triangle through hole, or a round through hole.

13. The method according to claim 6 , wherein the plurality of female blocks are in the same shape.

14. The mold according to claim 1 , wherein the angle is between 1° and 10°, inclusive.

Assignees

• Nuctech Co Ltd

Inventors

• Wang Yanchun
• Zhang Qingjun
• Li Yuanjing
• Chen Zhiqiang
• Zhao Ziran
• Liu Yinong
• Liu Yaohong
• Bai Nan

Classifications

• B30B15/026

  Mounting of dies, platens or press rams · CPC title

• B28B3/086 Primary

  The rams working in different directions · CPC title

• C04B35/5156

  based on rare earth compounds · CPC title

• B28B3/025

  Hot pressing, e.g. of ceramic materials · CPC title

• C04B35/645

  Pressure sintering · CPC title