>From a theoretical point of view, preferred orientation means orientational texture. There may be size textures, strain textures, grain boundary textures, dislocation textures etc. as well, although seldom in practical use. Therefrom, in practical use, texture is meant orientational texture and therefrom preferred orientation.
Joerg Bergmann On Mon, 2008-05-19 at 07:26 +0200, Alan Hewat wrote: > > If you want it, it's texture. If you don't want it, it's preferred > > orientation! > > Preferred orientation is what you get with X-rays; neutrons are good for > measuring texture :-) > > Seriously, "texture" is a term best applied to solid materials, where > crystallites have preferred orientation due to the way the solid was > formed or worked; texture can also be associated with strain broadening. > > Preferred orientation can also occur due to the way crystallites in > powdered materials stack together because of their morphology (eg plates > or needles), and is particularly difficult with small samples and > particular sample geometries. Preferred orientation can also be associated > with granularity (necessarily poor powder average). > > Interesting to see which topics generate the most heat, if not light > (which are similarly related :-) > > Alan. > ______________________________________________ > Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE > <[EMAIL PROTECTED]> +33.476.98.41.68 > http://www.NeutronOptics.com/hewat > ______________________________________________ >
