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metallized Ceramics11

Metallized ceramics is coated witha metal film (molybdenum, manganese, tungsten, silver, etc.) on the surface of ceramics, which is sintered in a metallized high-temperature furnace to achieve a firm combination of ceramics and metals. At pr
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Metallized ceramics is coated witha metal film (molybdenum, manganese, tungsten, silver, etc.) on the surface of ceramics, which is sintered in a metallized high-temperature furnace to achieve a firm combination of ceramics and metals. At present, the company has thick film method, film method, activation method and other processes, can achieve 95%-99.7% alumina ceramics, aluminum nitride ceramics, beryllium ceramics, sapphire, diamond and other surface metallization.
 
 
Item
 
 
Unit
 
A-95
A-75
MS-1
Bulk Density
ambient temperatures
g/cm³
≥3.64
≥3.2
≥2.7
Helium Leak Rate(Tightness)
 
pa.m3/s
≤1×10 ^-11
——
——
 
Flexural Strength
ambient temperatures
Mpa
336.1
280
160
 
Average Linear Expansion Coefficient
(20~500)℃
 
1/℃
7.27×10^-6
6.21×10^-6
8.48×10^-6
(20~800)℃
7.73×10^-6
——
——
Dielectric Constant
Mhz20℃
 
9.4
8.7
7.5
 
 
Volume Resistivity
100℃
 
 
Ω.cm
5.2×10^15
4.5×10^13
3.7×10^13
300℃
5.6×10^14
——
——
500℃
4.8×10^13
——
——
Dielectric Loss
20℃
 
2.4×10^-4
≤10×10^-4
≤8×10^-4
DC Breakdown Strength
 
KV/mm
42.0
34
28
 
Thermal Stability
ambient temperatures~800℃
 
 
通过pass
——
——
 
Chemical Stability
10%HCI
 
Mg
4.657
——
——
1:9NaOH
0.075
——
——

 
Area
Gauge length
Maximum load
Maximum stress
Unit
mm2
mm
kN
MPa
1
122.0000
100.0000
13.1016
107.390
2
122.0000
100.0000
16.9062
138.576
3
122.0000
100.0000
13.1273
107.601
4
122.0000
100.0000
14.4523
118.462
5
122.0000
100.0000
12.2820
100.672
6
122.0000
100.0000
13.2656
108.735
7
122.0000
100.0000
13.8773
113.749
8
122.0000
100.0000
17.4781
143.263
Average value
 
 
14.3113
117.306



 

SEM image of metallized layer was enlarged by 4000 times     SEM image of ceramic part enlarged by 500 times