多结构立方体溴碘化银乳剂微晶壳层制备的研究

本文研究了多结构立方体溴化银乳剂微晶的壳层制备。在壳层制备过程中，ｐＡｇ值，ＴＡＩ和氨能明显影响晶体的生长和再成核过程，对立方体ＡｇＢｒ晶体而言，包壳速度相同时，再成核晶体数随包壳时，ｐＡｇ值的增加或ＴＡＩ的存在而增加，随着氨的存在而下降，当ＴＡＩ存在时，晶体习性由立方体转向八面体。在本实验条件下，当制备壳层的包壳速度比达到１：３．３时，乳剂的感光度有明显的增加，核壳银量比对乳剂的感光度也有明显的

STUDY ON THE PREPERATION OF SHELL LAYER OF MULTISTRUCTURE SILVER BROMOIODIDE CUBIC MICROCRYSTALS

The preparation of shell layer of multistructure silver bromoiodide cubic microcrystals was studied. During the preparation of shell layer, the pAg value TAI and ammonia affected crystal growth and renucleation apparently. For AgBr cubes, the number of renucleated crystals was increased with the increase of pAg value or the adding of TAI under the same reactant addition rate. The crystal habit was transferred from cube to octahedra when TAI existed. The number of renucleated crystals was decreased when ammonia existed.The sensitivity wasn't increased apparently when adding rate ratio of the reactant reached 13.3 under the condition of our experiments. But it was affected by silver quantity ratio between seed and shell. Sensitivity was increased about 80% when the silver quantity ratio between seed and shell was increased from 0.831 to 4.51, at the same time fog was almost unchanged.;