显影银丝定影溶解及其热力学基础  

Dissolution and Chemical Thermodynamics of Developed Silver Filaments in Fixation

作　　者：刘素文[1] 胡逢凯[2] 许可 

机构地区：[1]中国科学技术大学应用化学系,合肥230026 [2]安徽省徽州师范专科学校化学系,安徽245000 [3]安徽省皖西联合大学化工系,安徽237000

出　　处：《影像技术》1998年第3期21-25,55,共6页Image Technology

基　　金：安徽省自然科学基金

摘　　要：本文对银影像的密度在长时间的定影过程中变小的原因进行了分析和研究。采用复形、电镜观察等手段对显影银丝的微观形态进行探索，结果发展：银丝在长时间定影后会在空管中形成细细的芯，芯和显影银丝均为多晶结构的银丝，只是定影后所遗留下的芯比定影前的银丝细了许多。用电化学的知识对显影银丝的定影溶解反应进行了研究。The cause of silver image turning thinner after long time fixation was investigated and analyzed here. The techniques of transmission electronic mictroscope(TEM) and replica were employed to observe the crystal structure of the developed sllver filament and the 'thin string'remaining in the tube after proionged fixation. The results showed that the thin string is a kind of polycrystal silver consisted of many crystalline grains, containing many microtwins and defects. There are no differences in the crystal structure between silver filaments and the thin strings. At the same time, according to chemical thermodyflamics.the dissolubility of the developed silver filaments in fixation was also studied.

关 键 词：电化学 显影 纳米银丝 银影像 定影溶解 热力学 

分 类 号：TB812.4[一般工业技术—摄影技术] TB88