FORMATION OF CERIA-DISPRSED PARTIALLY-STABILIZED ZIRCONIA FILM ON BEARING STEEL BALL BY SOL-DROPPING ELECTROPHORETIC DEPOSITION METHOD

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  • ゾル滴下電気泳動堆積法による軸受鋼球へのセリア分散部分安定化ジルコニア膜の形成

Abstract

Various parameters of the sol-dropping electrophoretic deposition (EPD) method were optimized to form a thick and uniform nano CeO_2-dispersed yttria-partially-stabilized zirconia film on the surface of high-carbon chromium bearing ball. There were fewer cracks on the film on the bearing ball fired in air than the film fired in a reducing atmosphere. Wear distance in the frictional wear test was longer in the coated ball formed at an applied voltage of 200 V than that of 100 V during EPD process. The coated ball prepared from the precursor solution that the ratio of alkoxide derived YPSZ to YPSZ powder is 2:8 had the longest wear distance.

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