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Aluminum Silicate

Last updated: April 19, 2019

What Does Aluminum Silicate Mean?

Aluminum silicate refers to a chemical compound with the formula 3Al2O3 · 2SiO2. It occurs as a mineral and is composed of aluminum, oxygen and silicon. The compound is often used to manufacture corrosion preventative coatings.

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Corrosionpedia Explains Aluminum Silicate

Aluminum silicate has a hardness of 1-2 on the Mohs scale of mineral hardness and a 1.56 refractive index.

The following vital properties must always be considered before incorporating aluminum silicate on any metallic surface to be protected against corrosion. Several of these parameters may negatively affect corrosion reduction efforts due to interactions in some electrochemical environments.

Density (mg/m3)2.8 to 2.9
LusterVitreous


Hegman Grind, Min.~ 4-6
G.E. brightness %82 - 92
ColorWhite, red, brown, orange and green


pH~ 3.8 - 8.0
Specific Gravity~ 2.58 - 3.15
CrystallographyOrthorhombic
Related Question
Does aluminum rust?
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CorrosionPreventative CoatingsSubstancesCorrosion Prevention SubstanceChemical CompoundInorganic CompoundCoatings

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