Study on the influence of different additives on the rheological properties of gadolinium oxysulfide slurry prepared for tape casting

Wenhua Zhang; Huamin Kou; Lin Ge; Hongzhi Pan; Wei Li

doi:10.1117/12.2674152

9 March 2023 Study on the influence of different additives on the rheological properties of gadolinium oxysulfide slurry prepared for tape casting

Wenhua Zhang, Huamin Kou, Lin Ge, Hongzhi Pan, Wei Li

Author Affiliations +

Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 126000N (2023) https://doi.org/10.1117/12.2674152
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China

Abstract

Gadolinium oxysulfide (Gd2O2S, GOS) doped with rare earth elements was often used as imaging materials for X-Ray imaging equipment because of its excellent properties of absorbing incident X-rays and converting them into visible light. The flat-panel detector based on the GOS phosphor screen is the core imaging component of the digital radiography. In this paper, GOS slurry was prepared to form phosphor screen by tape casting, and the influence of slurry solvents and different additives on the rheological properties of the slurry was systematically studied. Based on the results of rheological properties, the optimal solid content of the slurry and the optimal addition range of the additives, like dispersants, binders and plasticizers, were determined. The solid content of the slurry is 70%, and the best amount of dispersant is 0.5%~1% of the powder mass. The optimized dosage of binder is 4.5%~7% of the powder mass, and the best plasticizer content is 1.0~1.5 times of the binder content. Then, the GOS fluorescent layer with smooth and flat surface, uniform and controllable thickness, and good bonding ability, was successfully prepared by tape casting the optimized slurry.

Citation Download Citation

Wenhua Zhang, Huamin Kou, Lin Ge, Hongzhi Pan, and Wei Li "Study on the influence of different additives on the rheological properties of gadolinium oxysulfide slurry prepared for tape casting", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 126000N (9 March 2023); https://doi.org/10.1117/12.2674152

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available