ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00550628
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