Preparation Process and Properties of Fluorescent Coating on Inner Wall of Slender Tritium Light Tube
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.
tritium light sourcefluorescent coatingZnScoating process
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维普
