Posted by Rick Mohr on March 11, 2003 at 17:19:54:
In Reply to: Re: Pump wetted parts erosion posted by Gordon England on February 24, 2003 at 02:49:47:
: : When moving fluidized silicon oxide (DE) through pumps, I am interested in extending useful life of the wetted parts. One means is to select materials by use of hardness scales of the base metals. Economics of alloys leads me to consider coatings on wetted parts, such that I could use the softest, cheapest alloys such as ductile iron or cast iron. In the case of either ductile or cast iron, which type of coating and application method would be recommended and proven to yield longest service life?
: Hi Rick
: HVOF coatings of tungsten carbide/cobalt chromium (86WC-10Co-4Cr)or possibly plasma sprayed chromium oxide could be suitable candidates.
: Regards Gordon
Thanks for the insight, Gordon. Can you advise what the Brinnell Hardness of the recommended HVOF coatings is; tungsten carbide/cobalt chromium versus chromium oxide?
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