Slide 1

MENA3100 - Materialkarakterisering 14th January 2009 Ole Bjrn Karlsen 22 95 81 48 o.b.karlsen(at)fys.uio.no Slide 2 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 characterize 1 : to describe the character or quality of 2 : to be a characteristic of : DISTINGUISH 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 Slide 3 CompositionCaCO 3 Calcite (Kalsitt, kalkspat) Slide 4 Calcite structure Aragonite CaCO 3 CalciteAragonite Orthorombic Pmcn a = 4,95 , b = 7,96 , c = 5,73 Aragonite structure Hexagonal-R 32/m a = 4,99 , c = 17,06 (a = 6,37 , = 4605) Slide 5 Skutterudite CoAs 3 Structure type CeFe 4 Sb 12 Filled skutteruditesLa 0,2 Co 4 P 12 Skuterud grd, Modum CoP 3 NiP 3 IrAs 3 RhAs 3 IrSb 3 RhSb 3 CoSb 3 (Fe,Co)P 3 IrP 3 Slide 6 WHY? But also:Applications Example: Skutterudites have interesting thermoelectric properties Slide 7 Microstructure Steel (cf. Mesostructure: Brandon and Kaplan p. 11) Slide 8 Slide 9 Rapid quenching martensite Slide 10 Spheroidization