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KMID : 1151820200140040391
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Journal of the Korean Society of Radiology
2020 Volume.14 No. 4 p.391 ~ p.396
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The Evaluation and Fabrication of Radiation Phosphor Screen for Non-destructive Testing using the Special Room Temperature Gel-printing Method
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Lee Jun-Haeng
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Abstract
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In this study, we developed a phosphor film screen that can be applied to radiographs during non-destructive testing using Gd2O2S:Tb phosphor compounds. The image uniformity of the fabricated phosphor screen film was analyzed by FE-SEM, RMS and RDS analysis. In addition, the tensile strength, elongation, and modulus of elasticity of the Gd2O2S:Tb phosphor screen were evaluated by measuring the stress-strain characteristic curve. As a result, it was evaluated that the RSD value had an excellent image uniformity within 10% of the evaluation criteria. In addition, as a result of evaluation of physical properties, the tensile strength was 1.1760 N/㎟, the tensile strength at break was 1.1515 N/㎟. These results suggest that the Gd2O2S:Tb phosphor screen fabricated using the room temperature gel-printing method could be applied to digital radiography detectors for radiography.
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KEYWORD
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Gd2O2S:Tb , NDT , SEM , RMS , RSD
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