mena3100 – characterization of materials obk, 17.01.12
TRANSCRIPT
MENA3100 – Characterization of materials
OBK, 17.01.12
Material is a generic term used to describe physical matter in the solid state which occurs naturally or is manufactured to achieve particular physical properties and characteristics.
Material characterization
char·ac·ter·ize 1 : to describe the character or quality of <characterizes him as ambitious>2 : to be a characteristic of : DISTINGUISH <an era characterized by greed>
What?
Properties
Chemistry
Structure
...
How?
Flewitt and Wilde
Merriam-Webster's Collegiate Dictionary
Why?
Et materiale er et fast stoff vi kan bruke til noe.
MENA1000
Composition CaCO3
Calcite (Kalsitt, kalkspat)
Calcite structure
Aragonite
CaCO3
Calcite Aragonite
Orthorombic Pmcna = 4,95 Å, b = 7,96 Å, c = 5,73 Å
Aragonite structure
Hexagonal-R 32/ma = 4,99 Å, c = 17,06 Å
(a = 6,37 Å, = 46°05’)
Skutterudite CoAs3
Structure type
CeFe4Sb12Filled skutterudites La0,2Co4P12
Skuterud gård, Modum
CoP3
NiP3
IrAs3RhAs3
IrSb3
RhSb3
CoSb3 (Fe,Co)P3
IrP3
WHY?
But also:
ApplicationsExample: Skutterudites have interesting thermoelectric properties
MicrostructureSteel
Rapid quenching – martensite
Spheroidization