SA（SiC / Al）, SS（SiC / Si）
MMC are light weight, the same as Aluminum, and much stiffer than cast iron. Light weight/High rigidity will contribute to higher product performance for moving parts.
Special Materials
MMC (Metal Matrix Composites)Japan Fine Ceramics Co.,Ltd.
Do you have any difficulties concerning:
- Heavy weights
- Deflection
- Thermal expansion
- Vibration
MMC, Metal Matrix Composites represent a new type of material -- composites combining Metal & Ceramics.
Advantage
Light Weight・High Rigidity
Advantage
Thermal Properties
SA（SiC / Al）, SS（SiC / Si）
MMC have high thermal conductivity and low thermal expansion. These values are changeable depending on the metal and the Metal/Ceramics ratio. For example, MMC can prevent stress from high temperature as it has similar thermal expansion values to the materials it is in contact with. Due to high thermal conductivity, MMC are suitable as heat sink base materials.
～Thermal Properties～
Advantage
Hard to chip
SA（SiC / Al）
One of the disadvantages of Ceramics is to chip easily. MMCs have high fracture toughness because they are Metal/Ceramic composite materials. Also, MMC can easily be made in larger sizes and formed/molded in complex shapes.
～Comparison with Ceramics～
Advantage
High Vibration Damping
SA（SiC / Al）
MMC can offer higher vibration damping than other composites materials.
Compared to conventional materials, the half-life of vibration is very short, so MMC are suitable for stop & go parts. Check this high vibration damping in the video below.
※SA301 in the video shows our MMC.
Application
Product performances are much improved by using MMC on moving parts for which high speed and high mechanical precision are required, and MMC contributes heat conduction too.
Characteristic Benefits Application
Usage example
Satellite Hayabusa2
MMC is being used in a Japanese satellite, "Hayabusa 2", as rings on its Microwave Discharge Ion Engine, because of its light weight, low thermal expansion and quick absorption of vibration.
Usage example
Moving Stage
MMC are the most suitable material for moving stages because of their extremely high rigidness and thermal conductivity.
- Very light weight (the same as aluminum) & high rigidness (better than cast Iron)
- High Vibration Damping：Quick response and smooth stop
- Thermal expansion：Lower distortion by heating (similar to stainless steel guide's thermal expansion)
- Thermal conductivity・high heat emissivity： Lower heat generation on linear motor
- Same shape: No change of your existing mold
Usage example
Machine tools
Usage Example: for Machine tool（4m Rotary Grinder）
To reduce weight and improve rigidity, MMC is used on the moving portions of large machining centers.
Line-up
SA301 SA401
The composite material contains 30～40vol% SiC in aluminum alloys.
Has the same weight as cast aluminum and a higher Young's Modulus than cast iron. Consequently, it is suitable for the making of complex shapes and larger sizes and for manufacturing smaller size items.
- ・Light weight
- ・Low thermal expansion
- About 1/3 of cast iron
- ・High thermal conductivity
- ・High stiffness
- Table for LCD manufacturing equipment
- Part of the high-speed chip mounter
- Moving parts of machine tools
SA701
The composite material is infiltrated Aluminum in porous ceramics(SiC).
Compared with ceramics, it provides flexibility in sizing.
- ・Light weight
- ・High toughness
- ・High stiffness
- ・High abrasion resistance
- Table for LCD manufacturing equipment
- Wearing parts for Jet mill liners
- Heat spreader
SS501 SS701
The composite material is infiltrated Silicon in porous ceramics SiC.
Compared with SiC ceramics, it provides greater flexibility in sizing.
- ・Light weight
- ・Low thermal expansion
- ・High stiffness
- ・High thermal conductivity
- Heat spreader
- Vacuum chuck
- Carrier arm for Semiconductor equipment
