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China-Yixing Longly Refractories ZTA (20%ZrO2) Zirconia Toughened Alumina Composite Ceramic

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer China-Yixing Longly Refractories Co. Ltd
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF China-Yixing Longly Refractories ZTA (20%ZrO2) Zirconia Toughened Alumina Composite Ceramic.pdf
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Material Notes:
LONGLY's Zirconia Toughened Alumina ceramics (hereafter referred as composite ceramic, ZTA) is white, corrosion resistance, good chemical stability. As well all know that alumina is hard, while zirconia is tough, these two types of materials form into a compound of high-intensity and high-tenacity. At room temperature it has a higher bending strength and fracture toughness, therefore ZTA has excellent wear resistance.The material can be mixed at different ratios of zirconia and alumina to achieve desired mechanical and electrical properties according to customer's request. ZTA ceramic's performance is better than 99 alumina ceramic, while its price is much lower than zirconia ceramic. In many cases that alumina can not fulfill the task, ZTA shows better performance-price ratio than zirconia ceramic.Applications: ZTA has a wide range of applications in the industries of machinery, electronics, petroleum, chemical, aerospace and textile.Information Provided by China Yixing Longly Refractories Co. Ltd
Physical Properties Metric English Comments
Bulk Density >= 4.90 g/cc
>= 0.177 lb/in³
Water Absorption <= 0.0010 %
<= 0.0010 %
Mechanical Properties Metric English Comments
Hardness, Mohs 8.8
8.8
Flexural Strength >= 720 MPa
>= 104000 psi
cold bending
Compressive Strength >= 730 MPa
>= 106000 psi
Ambient
Fracture Toughness >= 7.50 MPa-m½
>= 6.83 ksi-in½
Thermal Properties Metric English Comments
CTE, linear 4.50 - 5.20 µm/m-°C

@Temperature 25.0 - 800 °C
2.50 - 2.89 µin/in-°F

@Temperature 77.0 - 1470 °F
Thermal Conductivity 33.0 W/m-K
229 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 1720 °C
>= 3130 °F
Component Elements Properties Metric English Comments
Al2O3 78 - 79 %
78 - 79 %
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+16 ohm-cm

@Temperature 100 °C
>= 1.00e+16 ohm-cm

@Temperature 212 °F
Dielectric Strength 25.1 - 26.2 kV/mm
638 - 665 kV/in
DC Breakdown Strength
Descriptive Properties Value Comments
Refractoriness (°C) 2260
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