Metal
Strength
Ductility
High melting points
Thermal and electrical conductivity
Toughness
free electrons
↓
Properties of metallic materials
Bonding
Nonferrous metal
중금속 copper tin nickel
경금속 Aluminum
귀금속 gold silver
희금속 radium
신금속 titan
합금
Copper
high electrical and thermal conductivity
high ductility
good corrosion r
같이 대 분류를 하였다.
A : Ferrous Metals(단 Casting의 Nonferrous Metals 中일부는 'A'로 분류됨)
B : Nonferrous Metals
C : Cementifious, Ceramic, Concreate and Masonry Materials
D : Miscellaneos Materials
E : Miscellaneous Subjects
F : Materials for Specific Applications
G : Corrosion, Deterioration, and Degradation of Materials
ES : Emergency Standards
P : Proposals
The greater
the better
Strong materials are preferred(σ)
Deformation is constrained(E)
The smaller
the better
Light materials are preferred(ρ)
Energy loss is less as possible
Low price
Relatively light MMC
Strong
↓
Final Choice For
Tennis Racket Frame
MMCC Aluminum/graphite fiber ga7-230 metal matrix composite
: Our optimized composite material for the frame of tenn
30 years
Despite constant investment, the raw material market is forecasted to remain undersupplied for the next few years.
Limited and undersupplied resources
Increasing price of raw material
Self-efficiency ratio
Experience in developing a new mine
in huge projects
Vast networks in various regions
- About 100 offices abroad (94)
- Plan to have more branches
metal and interface. Mobile charges has the same effect. But it makes the curve shift toward applied voltage because the movement of charges is determined by applied voltage(-,+). It is known that mobile charges are generated when dielectric material has the impurities such as Na ion.
The term fast interface state refers to the fact that these defects can change their charge state relatively fas