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Matrix Frit B40-C

High boron zero silicate refractory calcia alumina frit

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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