Matrix Frit B40-C
Description: High boron zero silicate refractory calcia alumina frit
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| B2O3 | 40.00% | 1.34 | |
| Al2O3 | 33.00% | 0.76 | |
| CaO | 24.00% | 1.00 | |
| Oxide Weight | 226.74 | ||
| Formula Weight | 226.74 | ||
Notes
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.
Related Information
Links
| Typecodes |
Frit
A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types. |
| Materials |
Matrix Frit B70-A
|
| Materials |
Calcium Aluminate Cement
|
| Oxides | B2O3 - Boric Oxide |
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