High Corrosion Ceramic Aluminum Plate For Mechanical Assembly/Innovacera

High Corrosion Ceramic Aluminum Plate For Mechanical Assembly/Innovacera

Keywords: Alumina Plate, Alumina Ceramic Plate, Al2O3, Aluminum Plate, Aluminum Oxide Plate, Alumina Setter Plate, Alumina Ceramics.

1. Introduction:

Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness.

Alumina has a high melting point, high hardness,although mechanical strength is reduced at temperatures above 1000 C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced.

Good chemical stability of alumina leads to high corrosion resistance. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions. Testing has shown that the low chemical solubility of alumina ceramics components makes them highly resistant to chemical corrosion. This is what makes high purity alumina the material of choice for components in a wide range of industrial applications.

The alumina material is unique in that it does not expand, even at high temperatures. Components made of this material can withshand even the most abrupt temperature changes of several hundred degrees without damage.

These properties make aluminum titanate especially ideal for use in metallurgical melting, Components for furnaces, Thermocouple tubes, Machine components.

2. Alumina ceramics features:

1).Excellent electrical insulation

2).High hardness

3).Relatively low strength and fracture toughness

4).Resistance to wear and corrosive

5).Excellent thermal stability

6).Resistance to high temperatures

7).High electrical resistivity

8).Good chemical stability and resistance

9).High corrosion resistance

10).Excellent thermal shock resistance

11).High thermal insulation

12).A Low Young's modulus

3. Properties of Alumina Material

Properties		Units	Alumina(Al2O3)
			Porous	Mullite	Al2O3 92%	Al2O3 96%	Al2O3 99%	Al2O3 99.5%
			Al2O3
Mechanical	Density	g/cm3		2.8	3.6	3.7	3.9	3.9
	Color	--	--	Tan	White	White	Ivory	Ivory
	Water Absorption	%		0	0	0	0	0
	Vickers Hardness	Gpa	--	7.4	11	11.5	13	14
	Flexural Strength (20°C)	Mpa	50~100	170	345	358	380	380
	Compressive Strength (20°C)	Mpa	20~100	550	2200	2300	3000	3000
Thermal	Thermal Conductivity (20°C)	W/m.K	3.1	3.5	16.7	24.8	25~35	25~35
	Thermal Shock Resistance (20°C)	ΔT(C)	--	300	250	250	200	200
	Maximum Use Temperature	°C	1900	1700	1500	1600	1700	1700
Electrical	Volume Resistivity (25°C)	Ω.cm	--	>1014	>1014	>1014	>1014	>1014

4. We can supply the products according to customer's drawings, samples and performance requirement. Welcome to send your inquiry for us at any time.