| Customization: | Available |
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| Application: | Automotive Industry, Electrical Industry, Electronic Industry, Refractory, Structure Ceramic, Industrial Ceramic, Brazing |
| Electrical Insulation: | High Voltage Insulator |
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1. Forming Method
There are mainly Dry Pressing, Hot Pressing, Isostatic Pressing, and Ceramic Injection Molding (CIM), each of which has its own advantages and disadvantages. We will choose the most suitable forming method on the basis of saving costs and ensuring quality.
2. Finishing Process
In order to achieve the precision of the product, most ceramic structural parts need further finishing treatment after the sintering process. The main finishing processes we use are machining (lapping, polishing...) and glazing.
3. Metallization Process
Metallization of ceramics refers to the creation of thin metal layers (films) on the surface of ceramics. After the surface of the ceramic material is metallized, it has both the characteristics of ceramics and the properties of metal.
Which Metallization Processes We Support?
Jinghui specializes in the production of metallized ceramic structural components, has rich experience in manufacturing precision ceramic parts, and is proficient in the surface metallization process of ceramic structural parts such as Mo-Mn method, electroless nickel plating method, silver firing method and W-Au method. Here we focus on the Mo-Mn method.
Introduction to Mo-Mn Method
The Mo-Mn method is widely used in the metallization of various ceramics, and its main advantages are:
(1) The process is mature and stable.
(2) High bonding strength, especially suitable for applications under harsh mechanical and climatic conditions.
(3) It can be repaired many times without damaging the metallization layer.
(4) The requirements for solder, metallization paste formula and sintering atmosphere are not very strict, and the process is easy to master.
The brief process of Mo-Mn method is shown in the picture below.
We can produce metallized ceramic structural parts of various specifications according to customers' drawings.
Product Applications
| Category | Property | Unit | 99.8% Al2O3 |
99.5% Al2O3 |
99% Al2O3 |
95% Al2O3 |
94.4% Al2O3 |
| Mechanical | Density | g/cm3 | ≥3.95 | ≥3.90 | ≥3.85 | ≥3.65 | ≥3.60 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 | |
| Vickers hardness | HV | 1700 | 1700 | 1700 | 1500 | 1500 | |
| Flexural strength | Mpa | ≥ 390 | ≥ 379 | ≥ 338 | ≥ 320 | ≥ 312 | |
| Compressive strength | Mpa | ≥ 2650 | ≥ 2240 | ≥ 2240 | ≥ 2000 | ≥ 2000 | |
| Fracture toughness | Mpam1/2 | 4-5 | 4-5 | 4-5 | 3-4 | 3-4 | |
| Thermal | Max. Service temperature (non-loading) |
ºC | 1750 | 1675 | 1600 | 1500 | 1500 |
| CTE (Coefficient of thermal expansion) 20-800ºC |
1×10-6/ºC | 6.5-8.2 | 6.5-8.0 | 6.2-8.0 | 5.0-8.0 | 5.0-8.0 | |
| Thermal shock | T (ºC) | ≥ 200 | ≥ 200 | ≥ 200 | ≥ 220 | ≥ 220 | |
| Thermal conductivity 25ºC |
W/(m·k) | 31 | 30 | 29 | 24 | 22.4 | |
| Specific heat | 1×103J/(kg·k) | 0.78 | 0.78 | 0.78 | 0.78 | 0.78 | |
| Electrical | Volume resistivity 25ºC |
ohm·cm | > 1×1014 | > 1×1014 | > 1×1014 | > 1×1014 | > 1×1014 |
| 300ºC | 1×1012 | 1×1012 | 8×1011 | 1012-1013 | 1012-1013 | ||
| 500ºC | 2×1012 | 5×1010 | 2×109 | 1×109 | 1×109 | ||
| Dielectric strength | KV/mm | 20 | 19 | 18 | 18 | 18 | |
| Dielectric constant (1Mhz) | (E) | 9.8 | 9.7 | 9.5 | 9.5 | 9.5 |
We are confident that we can fulfill your product requirements well. Welcome to order with drawings or samples, and look forward to becoming your reliable partner!
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