Study On The Tribological Properties Of The Amorphous Alloy In Hydrogen Peroxide With High Concentration

Based on the 973 program "Tribological Properties of Materials under Effect of Strong Oxidants" (2007CB607603), tribological properties of Fe-based amorphous alloy and nano-crystalline Coating, Zr-based Bulk Amorphous Alloy (ZrTiNiCuBe) were experimental studied in hydrogen peroxide with the concentration of 90% by pairing with 1Cr18Ni9Ti steel, GCr15 steel, SiC, ZrO2 or Si3N4 ceramic. Combined with hardness, scanning electron microscopy, x-ray diffraction, surface energy spectrum, white light confocal 3-D contour and other Analysis methods, serve performance and wear mechanism of Amorphous and Nano-crystalline Alloy Coating, which is affected by preparing parameters, structure of Amorphous Alloy, and pairs, were also discussed.To improve the reliability of the friction signal for SST-ST Pin-on-Disk tester, the torque signal that is processed by the wavelet analysis method is studied. By comparing with standard deviation of processing method with different wavelet functions and threshold, the best parameters of the wavelet analysis is confirmed and processing of tested signal of friction is enhanced.The Results showed that, when arc current was 500A, Fe-based amorphous and nano-crystalline alloy coating had a higher degree of amorphous and better resistance of wear with the increase of density in high concentration of hydrogen peroxide, The main wear mechanism of amorphous and nano-crystalline alloy coating pairing with Si3N4 ceramic is abrasive wear,ZrTiNiCuBe have diversity of tribological properties with different pairs in hydrogen peroxide. ZrTiNiCuBe/SiC exhibite a very low friction coefficient, tiny wear volume, and favorable wear-ability. Wear mechanism of ZrTiNiCuBe/SiC is mainly adhesive wear and slightly abrasive wear, both ZrTiNiCuBe/Si3N4 and ZrTiNiCuBe/ZrO2 showed adhesive wear and abrasive wear. Wear mechanism of ZrTiNiCuBe/1Cr18Ni9Ti and ZrTiNiCuBe/GCr15 is severely adhesive wear which lead to plow-type abrasive wear, and litter chemical wear.The research experimental results provide some theoretical and experimental reference for the engineering applications of amorphous alloys under the conditions of strong oxidation in tribological field.