Porosity in plasma sprayed alumina coatings

Conference · Tue Mar 01 04:00:00 EST 1994

OSTI ID:10135977

Ilavsky, J; Herman, H; Berndt, C C ^[1]; Goland, A N ^[2]; Long, G G; Krueger, S; Allen, A J ^[3]

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1. State Univ. of New York, Stony Brook, NY (United States)
2. Brookhaven National Lab., Upton, NY (United States)
3. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

Small-angle neutron scattering (SANS) was used to study the porosity of plasma sprayed deposits of alumina in as-sprayed and heat-treated conditions. SANS results were compared with mercury intrusion porosimetry (MIP) and water immersion techniques. Multiple small-angle neutron scattering yields a volume-weighted effective pore radius (R{sub eff}), for pores with sizes between 0.08 and 10{mu}m, the pore volume in this size region, and from the Porod region, the surface area of pores of all sizes.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10135977
• Report Number(s): BNL--60151; CONF-940684--3; ON: DE94008874; CNN: Contract DDM 9215846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202
ALUMINIUM OXIDES
HEAT TREATMENTS
POROSITY
SPRAYED COATINGS
STRUCTURE AND PHASE STUDIES
SURFACE AREA