| 摘要 |
A ceramic sinker coating composition is provided to prevent the lead contamination caused by a sinker in the neighboring sea and to reduce the rise of the manufacturing cost. A ceramic sinker coating composition coating the outside of a main body of the ceramic sinker comprises silicon dioxide 80~90 weight%, alumina 5~9 weight%, titanium dioxide 2~4 weight%, zirconia 2~4 weight% and triiron tetraoxide 1~3 weight%. The purity of the silicon dioxide is 99.5% or greater and the average particle of the silicon dioxide is 0.1-0.15 micron. |
