New patent application published for: IRRADIATION-RESISTANT GLASS HAVING GAMMA-RAY SHIELDING AND NEUTRON PROTECTION FUNCTIONS AND PREPARATION METHOD THEREFOR
IRRADIATION-RESISTANT GLASS HAVING GAMMA-RAY SHIELDING AND NEUTRON PROTECTION FUNCTIONS AND PREPARATION METHOD THEREFOR
Abstract
Irradiation-resistant glass having γ-ray shielding and neutron protection functions and a preparation method therefor. The glass material is prepared from the following components in percentage by mass: 25-45% of SiO.sub.2, 45-55% of PbO, 0.5-5% of Gd.sub.2O.sub.3, 0.5-1.5% of CeO.sub.2, 0.5-5% of Al.sub.2O.sub.3, 0-10% of Na.sub.2O, 2-10% of K.sub.2O, and 0-3% of an alkaline earth metal oxide selected from at least one of CaO and MgO, CaO and MgO being not both 0. The glass material has excellent gamma ray shielding performance, a good neutron protection function, and irradiation resistance, can be used for preparing a nuclear radiation shielding window, and has wide popularization and application prospects in complex environments in which gamma rays and neutron radiation are both present, e.g., nuclear power stations, nuclear power facilities, radiation diagnosis and treatment, and space detection.
Inventors:
YANG; Shengyun (Zaozhuang, CN), CAO; Zhenbo (Zaozhuang, CN), ZHANG; Meilun (Zaozhuang, CN), WANG; Ke (Zaozhuang, CN), HAN; Yu (Zaozhuang, CN), WANG; Qiao (Zaozhuang, CN), ZHANG; Yang (Zaozhuang, CN), JIA; Jinsheng (Zaozhuang, CN), ZHOU; You (Zaozhuang, CN), LV; Haifeng (Zaozhuang, CN), QIU; Fu (Zaozhuang, CN)
Applicant:
CNBM PHOTONICS TECHNOLOGY CO., LTD. (Zaozhuang, CN)
Family ID:
1000009512347
Appl. No.:
19/488139
Filed (or PCT Filed):
December 04, 2024
PCT No.:
PCT/CN2024/136607
Claims
1. A glass material consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 0.5%-5% Gd.sub.2O.sub.3, 0.5%-1.5% CeO.sub.2, 0.5%-5% Al.sub.2O.sub.3, 4%-10% Na.sub.2O, 6.8%-10% K.sub.2O, and 0-3% of an alkaline earth metal oxide selected from at least one of CaO and MgO, wherein CaO and MgO are not both 0% by mass.
2. The glass material according to claim 1, consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 0.5%-5% Gd.sub.2O.sub.3, 0.5%-1.5% CeO.sub.2, 0.5%-5% Al.sub.2O.sub.3, 4%-10% Na.sub.2O, 6.8%-10% K.sub.2O, and 0.1%-3% of the alkaline earth metal oxide selected from at least one of the CaO and the MgO.
3. The glass material according to claim 1, wherein Gd.sub.2O.sub.3 is 1%-5% by mass.
4. The glass material according to claim 1, wherein CeO.sub.2 is 0.5%-1.2% by mass.
5. The glass material according to claim 1, wherein Al.sub.2O.sub.3 is 0.5%-3% by mass.
6. The glass material according to claim 1, wherein Na.sub.2O is 4%-7.3% by mass.
7. The glass material according to claim 1, wherein CaO is 0.5%-2% by mass.
8. The glass material according to claim 1, wherein MgO is 0-1% by mass.
9. The glass material according to claim 1, wherein a content of the alkaline earth metal oxide selected from at least one of the CaO and the MgO is 0.5%-2.5% by mass.
10. The glass material according to claim 1, consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 1%-5% Gd.sub.2O.sub.3, 0.5%-1.2% CeO.sub.2, 0.5%-3% Al.sub.2O.sub.3, 4%-7.3% Na.sub.2O, 6.8%-10% K.sub.2O, and 0.1%-3% of the oxide selected from at least one of CaO and MgO.
11. The glass material according to claim 1, consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 1%-5% Gd.sub.2O.sub.3, 0.5%-1.2% CeO.sub.2, 0.5%-3% Al.sub.2O.sub.3, 4%-7.3% Na.sub.2O, 6.8%-10% K.sub.2O, 0.5%-2% CaO, and 0-1% MgO.
12. The glass material according to claim 1, consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 1%-5% Gd.sub.2O.sub.3, 0.5%-1.2% CeO.sub.2, 0.5%-3% Al.sub.2O.sub.3, 4%-7.3% Na.sub.2O, 6.8%-10% K.sub.2O, 1.5%-2% CaO, and 0-1% MgO.
13. The glass material according to claim 1, consisting of the following components in percent by mass: 25%-45% SiO.sub.2, 48%-55% PbO, 1%-5% Gd.sub.2O.sub.3, 0.5%-1.2% CeO.sub.2, 0.5%-3% Al.sub.2O.sub.3, 4%-7.3% Na.sub.2O, 6.8%-10% K.sub.2O, and 0.5%-2% CaO.
14. The glass material according to claim 1, wherein, at a thickness of 20 mm, the glass material has a .sup.60Co gamma-ray shielding rate ≥40.47%, a thermal neutron shielding rate ≥92.63%, a transmittance at 560 nm ≥86.42%, a transmittance at 560 nm after irradiation with gamma rays at a total dose of 10,000 Gy ≥82.61%, and a transmittance decrease at 560 nm after the irradiation ≤6.67%.
15. A method for preparing the glass material according to claim 1, comprising: mixing raw materials, high-temperature melting, auxiliary stirring and clarification, cooling and forming, and precision annealing, to obtain the glass material.
16. The method according to claim 15, wherein melting is conducted at 1,235-1,350 °C; forming is conducted at 1,108-1,222 °C; and annealing is conducted at 405-450 °C.
17. An article comprising the glass material of claim 1 for use in radiation shielding or optics.
18. The article according to claim 17, wherein the article is radiation shielding material or an optical element.
19. The article according to claim 17, wherein the optical element is an optical window element for shielding radiation.
20. A method of using the glass material of claim 1 in the field of radiation shielding or optics, the method comprising positioning, in a radiation path, a member selected from the group consisting of (i) the glass material and (ii) an article comprising the glass material, and, when the member is the article, the article being selected from the group consisting of a radiation shielding material and an optical element.
- Company
- CNBM PHOTONICS TECHNOLOGY CO., LTD.
- Keywords
- C03C4/08, C03B25/00, C03C3/07, C03C3/105, G21F1/06