[우주항공재료] MMC(Metal Matrix Composite)

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[우주항공재료] MMC(Metal Matrix Composite)에 대한 자료입니다.
목차
1. High strength to density ratio
2. Low thermal expansion coefficient compared to metals
3. High thermal resistance than typical composite materials
4. Excellent electrical conductivity and thermal conductivity than
typical composite materials
5. Lack of adhesion to the matrix and Fiber
본문내용
Matrix : Al-2024(anealed, 4.4%Cu 0.6%Mn 1.5%Mg)
UTS = 182.6 MPa
Fiber : B fiber, AVCO
UTS = 3498 MPa
300M Steel :
UTS = 1930.6 MPa
σc : Strength of composite Vf = Volume fraction of fiber
σf : Strength of fiber Vf +Vm =1
σm : Strength of matrix MMC : Boron fiber/Al (2024) alloy
300M :

Raw material of the MMC
- Boron cost : 5000$/Kg
- Al (2024) alloy : 6000 won/Kg
300M(AMS 6417) : 168$

Produced in single-filament reactors by CVD, boron fiber exhibits a unique combination of High Strength High Modulus and Large Diameter.

Elemental boron is deposited on a fine
tungsten wire(1000~1300℃) substrate