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MENA3100 - Materialkarakterisering
14th January 2009
Ole Bjørn Karlsen22 95 81 48o.b.karlsen(at)fys.uio.no
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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 som kan brukes til noe.
T. Norby
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Composition CaCO3
Calcite (Kalsitt, kalkspat)
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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’)
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Skutterudite CoAs3
Structure type
CeFe4Sb12Filled skutterudites La0,2Co4P12
Skuterud gård, Modum
CoP3
NiP3
IrAs3RhAs3
IrSb3
RhSb3
CoSb3 (Fe,Co)P3
IrP3
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WHY?
But also: ApplicationsExample: Skutterudites have interesting thermoelectric properties
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Microstructure
Steel
(cf. Mesostructure: Brandon and Kaplan p. 11)
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Rapid quenching – martensite
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Spheroidization