In response to the development requirements of small-sized gaseous tritium light sources,a wet coating and sintering process for preparing micron-sized ZnS(Cu)phosphors coatings on the inner wall of a slender glass tube was independently developed.And a coating device with controllable pressure,flow and temperature was designed and established.The coating device was used to explore the preparation process of fluorescent coatings for slender glass tubes with a specification of φ1.1 mm×550 mm,and to carry out research on the influ-ence of slurry formulations on the viscosity of mixed liquid formulations and coating thick-ness.By optimizing the drying parameters,the coating was finally obtained in the slender glass tube.The cross-sectional SEM analysis shows that the coating has good compactness,and its thickness is(16.9±0.6)μm(n=32).The coating has good uniformity in thickness and is stable and does not fall off after being placed for a long time.The luminescence brightness of the tritium light tube sample obtained by this process is 0.642 cd/m2,with excellent uniformity.This provides a basis for device conditions and process optimization for the development of subsequent tritium light source products.
关键词
氚光源/荧光涂层/ZnS/涂覆工艺
Key words
tritium light source/fluorescent coating/ZnS/coating process
维普
万方数据