Atomized BaF2-CaF2 for Better-Flowing Plasma-Spray Feedstock
John H. Glenn Research Center, Cleveland, Ohio
Friday, February 01 2008
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Water atomization is better suited to high-volume production of metal fluoride than conventional methods.
Atomization of a molten mixture of BaF2 and CaF2 has been found to be superior to crushing of bulk solid BaF2- CaF2 as a means of producing eutectic BaF2-CaF2 powder for use as an ingredient of the powder feedstock of a hightemperature solid lubricant material known as PS304. Developed to reduce friction and wear in turbomachines that incorporate foil air bearings, PS304 is applied to metal substrates by plasma spraying. The constituents of PS304 are:
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