特性Property
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氧化铝电器电子陶瓷
Electric and electronic ceramic
|
氧化铝AL2O3(%)
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94-99.7
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体积密度bulk density (g/cm3) ≥
|
3.55-3.95
|
莫氏硬度Moh’s hardness
|
9
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热膨胀系数coefficient of thermal expansion(m/m.K)
(20-1000℃)
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7-8×10-6
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导热系数Thermal conductivity (w/m.k)
|
18-22
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绝缘强度Insulating strength (KV/mm)
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15-20
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直流击穿强度DC breakdown strength
(Kv/mm)
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17.6-20
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吸水率Water absorption(%)<
|
0.08
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断裂韧性fracture toughness KΙC ≥
|
4.8MPa·m1/2
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抗弯强度 flexure strength ≥
|
290MPa
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常温耐压强度Ambient compressive strength(Mpa)≥
|
850
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常温抗折强度Cold bending strength (Mpa) ≥
|
520
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耐火度Refractoriness (℃)≥
|
2000
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Zui高使用温度Max service temperature(℃) ≥
|
1650
|