SANS INVESTIGATION OF PLASMA-SPRAYED MATERIALS USING A DOUBLE-CRYSTALDIFFRACTOMETER

The porosity of plasma-sprayed alumina was investigated by means of hi gh-resolution SANS technique in the regime of strong multiple scatteri ng. The size, specific surface and volume fraction of pores were deter mined by fitting a model correlation function to the data with the sca ttering probability N as one of free parameters. The pore characterist ics are reproduced well for different values of N and agree with the r esults of other porosimetric methods.