Studies of the growth of “silicate gardens” and related phenomena
Studies of the growth of “silicate gardens” and related phenomena
复制标题
“硅酸盐花园”的生长及相关现象的研究
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
D. Double
中科院分区：
文献类型：
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作者：
R. D. Coatman;N. L. Thomas;D. Double
在“硅酸盐花园”中获得的各种生长形态进行了描述和盐类型和硅酸盐浓度的影响进行了检查。它表明，这些增长发展的渗透机制的基础上的半渗透性的硅酸盐凝胶膜之间沉淀的金属离子和硅酸盐。渗透效应并不局限于硅酸盐，也包括铝酸盐和亚铁氰化物-一般来说，它可能适用于连续的胶体凝胶膜在两种不同组成的水溶液之间沉淀的系统。某些实际问题（即波特兰水泥的水化，金属在含水环境中的腐蚀）的影响被认为是。
Various growth morphologies obtained in “silicate gardens” are described and the influence of salt type and silicate concentration are examined. It is demonstrated that these growths develop by an osmotic mechanism based on the semipermeable properties of the silicate gel membrane precipitated between the metal ion and the silicate. The osmotic effect is not confined to silicates but also includes aluminates and ferrocyanides — and in general, it probably applies to systems where a continuous colloidal gel membrane is precipitated between two aqueous solutions of differing compositions. The implications in relation to certain practical problems (i.e. the hydration of Portland cement, the corrosion of metals in an aqueous environment) are considered.