Tribological Property of Ni3Al Matrix Composites with Addition of BaMoO4

The Ni3Al matrix composites with addition of 10, 15, and 20 wt% BaMoO4 were fabricated by powder metallurgy technique, and the tribological behaviors were studied from room temperature to 800 °C. It was found that BaAl2O4 formed during the fabrication process. The Ni3Al composites showed poor tribological property below 400 °C, with high friction coefficients (above 0.6) and wear rates (above 10−4 mm3/Nm). However, the composites exhibited excellent self-lubricating and anti-wear properties at higher temperatures, and the composite with addition of 15 wt% BaMoO4 had the lowest wear rate (1.10 × 10−5 mm3/Nm) and friction coefficient (0.26). In addition, the results also indicated that BaAl2O4 for the Ni3Al composites did not exhibit lubricating property from room temperature to 800 °C.

[1]  Harold E. Sliney,et al.  Solid lubricant materials for high temperatures: A review , 1982 .

[2]  K. Cheah,et al.  A bluish green barium aluminate phosphor for PDP application , 2006 .

[3]  Alexander A. Sobol,et al.  Spontaneous Raman spectroscopy of tungstate and molybdate crystals for Raman lasers , 2000 .

[4]  J. Zabinski,et al.  Sulfate based coatings for use as high temperature lubricants , 1999 .

[5]  Yongfa Zhu,et al.  Synthesis and Performance of BaAl2O4 with a Wide Spectral Range of Optical Absorption , 2007 .

[6]  P. Blau.  Elevated-temperature tribology of metallic materials , 2010 .

[7]  A. Erdemir.  A crystal-chemical approach to lubrication by solid oxides , 2000 .

[8]  Yitai Qian,et al.  Aqueous mineralization process to synthesize uniform shuttle-like BaMoO4 microcrystals at room temperature , 2007 .

[9]  S. Sasaki,et al.  Spark-plasma-sintered ZrO2(Y2O3)-BaCrO4 self-lubricating composites for high temperature tribological applications , 2005 .

[10]  T. Suszko,et al.  Thin films of MoO3–Ag2 O binary oxides – the high temperature lubricants , 2006 .

[11]  T. Suszko,et al.  Tribological properties of silver- and copper-doped transition metal oxide coatings , 2003 .

[12]  J. Florek,et al.  Consideration of Lubricants for Temperatures above 1000 F , 1959 .

[13]  S. Prasad,et al.  Lubrication using a microstructurally engineered oxide: performance and mechanisms , 2000 .

[14]  Yun Liu,et al.  On the microstructure and symmetry of apparently hexagonal BaAl2O4 , 2008 .

[15]  G. H. Chen,et al.  Mechanical activation of barium aluminate formation from BaCO3–Al2O3 mixtures , 2006 .

[16]  S. Sasaki,et al.  High-temperature tribological properties of spark-plasma-sintered Al2O3 composites containing barite-type structure sulfates , 2007 .

[17]  A. Voevodin,et al.  Calcium sulfate as a high temperature solid lubricant , 1998 .