The product puts the ceramic materials together with steel with some special technologies, and has a steel framework and an anti-abrasive ceramic coating. It is suitable for special working conditions like corrosions caused by impact of some high-speed particles in electric, petrochemical industries. The product characterizes the anti-abrasive, anti-corrosion, long life, convenient maintenance and economy.

The ceramic coating mainly adopts some engineering ceramics with its ingredient, AL203, is no less than 95 percent. It is also made into various shapes of ceramics, some of which are shown in Fig.22-1,22-2, and 22-3, to be suitable for various technologies of steel composite ceramics. See the Form 22-1 and 22-2 for ingredients and specification of special anti-abrasive ceramics.

Item	Description	Ingredients
1	Industrial Aluminum Oxide	Al2O3>98.4%、Sio2<0.06%、Fc2O3<0.04%、N2O<0.6%、Firing loss rate <0.8%
2	Arenaceous Quartz	Sio2<98%、Fe2O3<0.08%
3	White Paraffin Wax	GB254-75、54、56
4	Special Additive	XT-I、XT-II、XT-III

Number	Item	Requirements	Parameter
1	Content of Aluminum Oxide		95%~97%
2	Tear Strength		≥250Mpa
3	Volume Density		3.8~3.9g/cm3
4	Thermal Expansion Coefficient	25-800℃	7.2~7.6×10-6
5	Thermal Coefficient		0.04~0.05Cal/cm.sec℃
6	Anti-thermal Shock perfomance300 water cooling 400 chamber cooling 700 water cooling 10times 20times 6times	300℃ water cooling 400℃chamber cooling 700℃water cooling	10times
			20times
			6times
7	Well Injectivity		<0.1
8	Safe Injectivity		-80~1400℃
9	Anti-Abrasive Performance	60-Mesh Scouring 16Mn Steel and Anti-Abrasive Ceramic Samples with a high speed as Sic 1200m/s Simultaneously	Volume weight loss rate compared with 16Mn Steel: Sample: 0.004-0.006g/cm3 16Mn Steel: 0.05-0.08g/cm3