Investigation of ceramic coatings by visualization of electrical potential and current distribution

研究了发光和荧光材料在外加电场下的响应，以探讨它们在聚变包层系统陶瓷材料检测中的适用性。将一种无机电致发光材料应用于烧结碳化硅板材，其电导率分别为~1×10~(-6)~(-6)·S/m和~1×10~(-2)~(-2)·S/m，电导率的差异可以通过材料的发光来检测。有机材料DiBAC4(3)和GFP的荧光区域随电场的变化而变化。将DiBAC4(3)溶液应用于涂有Er2O3陶瓷绝缘层的金属板上。DiBAC4(3)的荧光强度在板上未涂覆的区域减弱。认为DiBAC4(3)的分布已经根据极板上的电位或电流分布而改变，可以检测到未涂覆的区域。

Responses of luminescent and fluorescent materials under an applied electric field have been examined to investigate their applicability for inspection of ceramic materials developed for fusion blanket systems. An inorganic electro-luminescence (EL) material has been applied to sintered SiC plates with the electrical conductivities of ~1x10^<-6>S/m and ~1x10^<-2>S/m. The deference in the conductivities could be detected by a luminescence of the material. The organic materials of DiBAC4(3) and GFP showed a change in their fluorescent region according to the electric field. The DiBAC4(3) liquid has been applied to a metal plate coated with an Er2O3 ceramic insulating layer. The intensity of the fluorescent of DiBAC4(3) decreased at an uncoated area on the plate. It is considered that the distribution of DiBAC4(3) has been changed according to the electrical potential or current distribution on the plate and could detect the uncoated area.