High Bonding Strength Mo-Mn Metallized Zirconia Ceramic Cap for Electronics
Product Parameters
The main raw material of this product is zirconia ceramics. Zirconia ceramics have the advantages of high toughness, high bending strength, high wear resistance, excellent heat insulation performance, and a thermal expansion coefficient close to that of steel, so they are widely used in the field of structural ceramics.
The material properties of zirconia are shown in the figure below.
| Category |
Property |
Unit |
ZrO2
(Y-TZP) |
ZrO2
(MSZ) |
| Mechanical |
Density |
g/cm3 |
≥6.0 |
≥5.72 |
| Water absorption |
% |
0 |
0 |
| Vickers hardness |
HV |
1300 |
1200 |
| Flexural strength |
Mpa |
≥ 1200 |
≥ 900 |
| Compressive strength |
Mpa |
≥ 1990 |
≥ 1750 |
| Fracture toughness |
Mpam1/2 |
6.5-8 |
11 |
| Thermal |
Max. Service temperature
(non-loading) |
ºC |
1000 |
1200 |
CTE (Coefficient of thermal expansion)
20-800ºC |
1×10-6/ºC |
8.0-9.5 |
7.8-9.3 |
| Thermal shock |
T (ºC) |
≥ 300 |
≥ 300 |
Thermal conductivity
25ºC |
W/(m·k) |
3 |
2 |
| Specific heat |
1×103J/(kg·k) |
0.46 |
0.46 |
| Electrical |
Volume resistivity
25ºC |
ohm·cm |
> 1×1013 |
> 1×1013 |
| 300ºC |
1×1010 |
1×1010 |
| 500ºC |
2×105 |
2×105 |
| Dielectric strength |
KV/mm |
17 |
9.4 |
| Dielectric constant (1Mhz) |
(E) |
29 |
28 |
Product Features
Compared with steel structural parts, the advantages of ceramic structural parts are:
1. higher limit speed;
2. more suitable for precision occasions;
3. service life is generally 5 times that of steel structural parts;
4. can be used at higher temperatures;
5. more adaptable to temperature changes;
6. applicable in chemical corrosion occasions and magnetic occasions.
Why do Metallization on the Surface of Ceramic Structural Parts?
The metallization of ceramic surfaces is a process with high technical content. The specific influencing factors include metallization formula, metallization temperature and holding time, metallization microstructure, metallization coating thickness and coating method, etc.
The function of the metallization layer on the ceramic surface is to enhance or improve the surface properties of the product, such as oxidation resistance, wear resistance, corrosion resistance, and certain electrical, optical and tribological properties.
How Our Ceramic Parts are Produced?
Jinghui has been focusing on the production and processing of precision ceramic structural parts for more than ten years. As shown below, the production process of our ceramic structural parts is generally divided into five main steps, ceramic powder preparation - forming - sintering - post finishing - metallization.
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 based on the refractory metal powder Mo, and then adds a small amount of low-melting Mn metallization formula, adds a binder and coats the ceramic surface, and then sinters to form a metallization layer.
The brief process of Mo-Mn method is shown in the picture below.
Metallized ceramic structural parts obtained by the Mo-Mn method have the following characteristics:
1. High bonding strength, high air tightness, high reliability and good heat resistance.
2. The finished product has dual characteristics of ceramic and metal.
Our Advantages
Thank you for your visit. We can produce and process various special-shaped and high-precision ceramic structural parts according to your requirements. 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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