| 摘要 |
The method comprises (A) agitatingly mixing 30 parts aluminium oxide containing over 80wt% alpha aluminium oxide, 20 parts silica, 10 parts titanium oxide, 5 parts ferrite (Fe2O3), 1 part pigment, and 34 parts isopropyl alcohol at 25-35 deg.C for 2-6 hours ; (B) aging the mixture for 6 hours ; (C) diluting it again with isopropyl alcohol of an amount equivalent to 1/3 of the total compositon ; (D) first coating the ceramic composition on the aluminium surface, followed by drying in the furnace at 180 deg.C for 2 mins ; (E) second coating the ceramic composition thereon ; and (F) calcining the coated aluminium in the drying furnace at 250 deg.C for 20 mins.
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