23
• Subatomic level Electronic structure of individual atoms that defines interaction among atoms (interatomic bonding).
• Atomic level Arrangement of atoms in materials for the same atoms can have different properties, e.g. two forms of carbon: graphite and diamond.
Tin
210 thousand
Molybdenum Titanium W Uranium Silver Gold Platinum
121 thousand 95 thousand 43 thousand 39 thousand 14 thousand 1.9 thousand 270 ton
2020/12/21
6
2020/12/21
精选ppt
7
1.1 材料科学与工程的发展史
芳纶纤维
Ceramics 10,000 BC 5,000 BC 1,000 BC
2020/12/21
DJTU Materia精ls 选Scpipent ce & Engineering
8
2020/12/21
DJTU Materia精ls 选Scpipent ce & Engineering
•Bauxite
101 million
•Coal
4,573 million
•Iron ore
943 million
•Cement
1121 million