To investigate the origin of the protection effect of zinc salts against glass atmospheric alteration, the speciation of Zn²⁺ ions on glass according to the deposit protocol and the Zn²⁺ surface concentration, and its change over time, was investigated in the light of the respective performances of the treatments. In that respect, a combination of various characterization methods of the glass surface and near‐surface was used before and after aging experiments (temperature, relative humidity (RH) control) of the Zn‐treated glass. Different Zn‐species could be observed on the surface of the treated glass: chemisorbed species, physisorbed species and precipitated hydroxide phases, their respective distribution being highly dependent on the nature of the treatment and on the Zn²⁺ surface concentration. GI‐XAS (Zn K‐edge) and ToF‐SIMS experiments pointed out the conversion by thermal activation of these surface species into chemisorbed species inserted in the glass network in the near‐surface. The chemisorbed species appear to be the most effective ones for the glass protection, possibly by making the surface less soluble, less hydrophilic and even by acting as a diffusion barrier.

中文翻译：

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锌盐的功效，可保护玻璃免受大气变化的影响。第二部分：可能的钝化机制

为了研究锌盐对玻璃大气变化的保护作用的起源，根据沉积方案和Zn ²⁺表面浓度，研究了Zn ²⁺离子在玻璃上的形态以及其随时间的变化。治疗的各自表现。在这方面，在经过锌处理的玻璃的老化实验（温度，相对湿度（RH）控制）之前和之后，使用了玻璃表面和近表面的各种表征方法的组合。在处理过的玻璃表面上可以观察到不同的锌种类：化学吸附物质，物理吸附物质和沉淀的氢氧化物相，它们各自的分布高度依赖于处理的性质和锌²⁺表面浓度。GI‐XAS（Zn K‐edge）和ToF‐SIMS实验指出，通过将这些表面物质热活化，可以将其转化为化学吸附物质，该化学吸附物质插入了近表面的玻璃网络中。化学吸附的物质似乎是最有效的玻璃保护物质，可能是通过降低表面的可溶性，降低亲水性甚至充当扩散屏障来实现的。