Gordon England Surface Engineering Forum



Re: Pump wetted parts erosion


Posted by Gordon England on February 24, 2003 at 02:49:47:

In Reply to: Pump wetted parts erosion posted by Rick Mohr on February 21, 2003 at 18:35:47:

: 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



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