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Matrix Frit B40-C

High boron zero silicate refractory calcia alumina frit

OxideAnalysisFormula
CaO24.00%1.000
Al2O333.00%0.756
B2O340.00%1.343
Oxide Weight226.74
Formula Weight226.74
If this formula is not unified correctly please contact us.

Although this frit is very high in boron, it is a refractory (this might be a surprise to ceramic technicians who are accustomed to the use of boron as a powerful flux). Frits of this type have been in use to stop the penetration of aluminum in refractories since 1958 (by Carborundum Co., Metaullics Inc., Ceradyne, H-W Refractories (now ANH), and AP Green, and others). The original patent holder for these frits was Kaiser Aluminum Corp.

They are about ~1% soluble after 90 min in ~25 C water. In this way they can be used in castable cements where any appreciable amount of soluble boric oxide would retard Calcium Aluminate cement almost indefinitely.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Matrix Frit B40-C" descrip="High boron zero silicate refractory calcia alumina frit" searchkey="" loi="0.00" casnumber="65997-18-4"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="24.000" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="33.000" tolerance=""/> <oxide symbol="B2O3" name="Boric Oxide" status="" percent="40.000" tolerance=""/> </oxides> </material>


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