| 摘要 |
A refractory boride body or coating made of a boride of titanium, chromium, vanadium, zirconium, hafnium, niobium, tantalum, molybednum and cerium is produced from a slurry of the refractory boride or a precursor in a colloidal carrier preferably composed of two or more different grades of the same colloidal carrier selected from colloidal alumina, yttria, ceria, thoria, zirconia, magnesia, lithia, monoaluminum phosphate and cerium acetate. The slurry can also comprise an organic additive selected from polyvinyl alcohol; polyacrylic acid; hydroxy propyl methyl cellulose; polyethylene glycol; ethylene glycol, butyl benzyl phthalate; ammonium polymethacrylate and mixtures thereof. The refractory boride body or coated body is useful as a component of aluminium electrowinning cells. |
