لینک دانلود و خرید پایین توضیحات
دسته بندی : پاورپوینت
نوع فایل : 
.ppt ( قابل ویرایش و آماده پرینت )
تعداد اسلاید : 50 اسلاید
قسمتی از متن .ppt :
Properties
Structure
Processing
“Materials Science”
“Materials Engineering”
Performance
aut
2
Bonding properties
Type
Ionic
Covalent
Metallic
Secondary
Bond Energy
Large!
Variable
large-Diamond
small-Bismuth
Variable
large-Tungsten
small-Mercury
smallest
Comments
Nondirectional (ceramics)
Directional
(semiconductors, ceramics
polymer chains)
Nondirectional (metals)
Directional
inter-chain (polymer)
inter-molecular
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3
Properties From Bonding: Tm
• Bond length, r
• Bond energy, Eo
• Melting Temperature, Tm
Tm is larger if Eo is larger.
• Coefficient of thermal expansion, a
• a ~ symmetry at ro
is larger if Eo is smaller
and very asymmetric.
PROPERTIES FROM BONDING: a
پاورپویت Performance