Tribological properties of self-lubricating laminated ceramic materials

Abstract

In order to improve the tribological properties of ceramic composites, Al₂O₃/TiC-Al₂O₃/TiC/CaF₂ self-lubricating laminated ceramic composites were prepared by vacuum hot pressing sintering. Experiments were conducted to get mechanical properties and the friction and wear properties were also measured with friction and wear tester. The worn surfaces were observed by scanning electron microscope (SEM) and energy dispersion spectrum (EDS). The wear resistance properties and the self-lubricating effect of ceramic composites were analyzed. Results show that the Al₂O₃/TiC-Al₂O₃/TiC/CaF₂ self-lubricating laminated ceramic composites layers are well-defined with a higher bonding strength and the mechanical performances are uniform enough to overcome the anisotropy of weak laminated ceramic composites. In addition, the fracture toughness of Al₂O₃/TiC layers is also improved. Its friction coefficient and wear rates decrease with the increase of rotation speed and load. Al₂O₃/TiC-Al₂O₃/TiC/CaF₂ self-lubricating laminated ceramic composites have good wear resistance because of the tribofilm formed by the CaF₂ solid lubricants. The wear mechanisms of Al₂O₃/TiC/CaF₂ layers are abrasive wear and Al₂O₃/TiC layers are adhesive wear.

Keywords

composites / laminated ceramic materials / self-lubricating / wear and friction

References

[1] Min-Soo S, Young-Hun C, Seock-Sam K Friction and Wear Behavior of Structural Ceramics Sliding against Zirconia[J]. Wear, 2008, 264(9–10): 800-806.

[2] Hsu S M, Shen Ming Wear Prediction of Ceramics[J]. Wear, 2004, 256(9–10): 867-878.

[3] de Portu G, Micele L, Prandstraller D, . Abrasive Wear in Ceramic Laminated Composites[J]. Wear, 2006, 260(9–10): 1 104-1 111.

[4] Tarlazzi A, Roncari E, Pinasco P, . Tribological Behavior of Al₂O₃/ZrO₂-ZrO₂ Laminated Composites[J]. Wear, 2000, 244(1–2): 29-40.

[5] Tai Q, Mocellin A Review: High Temperature Deformation of Al₂O₃-based Ceramic Particle or Whisker Composites[J]. Ceram. Int., 1999, 25(5): 395-408.

[6] Liu N, Shi M, Xu Y D, . Effect of Starting Powders Size on the Al₂O₃-TiC Composites[J]. Int. J. Refract. Met. H., 2004, 22(6): 265-269.

[7] Sullivan J L, Shi B G, Saied S O Microtribological Studies of Twophase Al₂O₃-TiC Ceramic at Low Contact Pressure[J]. Tribol. Int., 2005, 38(11–12): 987-994.

[8] Wang Z, Hong C, Zhang X, . Microstructure and Thermal Shock Behavior of ZrB₂-SiC-graphite Composite[J]. Mate. Chem. Phys., 2009, 113(1): 338-341.

[9] Carrapichano J M, Gomes J R, Silva R F Tribological Behavior of Si₃N₄-BN Ceramic Materials for Dry Sliding Applications[J]. Wear, 2002, 253(9–10): 1 070-1 076.

[10] Ye Y, Chen J, Zhou Huidi An Investigation of Friction and Wear Performances of Bonded Molybdenum Disulfide Solid Film Lubricants in Fretting Conditions[J]. Wear, 2009, 266(7–8): 859-864.

[11] Moshkovich A, Perfilyev V, Yutujyan K, . Friction and Wear of Solid Lubricant Films Deposited by Different Types of Burnishing[J]. Wear, 2007, 263(7–12): 1 324-1 327.

[12] Senda T, John D, Reg M Sliding Wear of Oxide Ceramics at Elevated Temperatures[J]. J. Am. Chem. Soc., 1995, 78(11): 3 018-3 024.

[13] Aizawa T, Mitsuo A, Yamamoto S, . Self-lubrication Mechanism via the In-situ Formed Lubricious Oxide Tribofilm[J]. Wear, 2005, 259(1–6): 708-718.

[14] Wang L, Wang B, Wang X, . Tribological Investigation of CaF₂ Nanocrystals as Grease Additives[J]. Tribol. Int., 2007, 40(7): 1 179-1 185.

[15] Wang Y, Liu Zuomin Tribological Properties of High Temperature Self-lubrication Metal Ceramics with an Interpenetrating Network[J]. Wear, 2008, 265(11–12): 1 720-1 726.

[16] Mattern A, Huchler B, Staudenecker D, . Preparation of Interpenetrating Ceramic-metal Composites[J]. J. Eur. Ceram. Soc., 2004, 24(12): 3 399-3 408.

[17] Bahadur S, Yang C-nan Friction and Wear Behavior of Tungsten and Titanium Carbide Coatings[J]. Wear, 1996, 196(1–2): 156-163.

[18] Acker KV, Vercammen K Abrasive Wear by TiO₂ Particles on Hard and on Low Friction Coatings[J]. Wear, 2004, 256(3–4): 353-361.

[19] Qi Y-e, Zhang Y, Hu Litian High-temperature Self-lubricated Properties of Al₂O₃/Mo Laminated Composites[J]. Wear, 2012 1-4.

[20] Clegg W J, Kendall K, Alford N M A Simple Way to Make Tough Ceramics[J]. Nature, 1990 445-447.

[21] Yang X, Ze X, Wang H, . Wear Properties and Microstructures of Alumina Matrix Composite Ceramics used for Drawing Dies[J]. Ceram. Int., 2009, 35(8): 3 495-3 502.

[22] Deng J, Yang X, Wang Jinghai Wear Mechanisms of Al₂O₃/TiC/Mo/Ni Ceramic Wire-drawing Dies[J]. Mater. Sci. Eng., 2006, 424(1–2): 347-354.

[23] Deng J, Cao T, Ding Z, . Tribological Behaviors of Hot-pressed Al₂O₃/TiC Ceramic Composites with the Additions of CaF₂ Solid Lubricants[J]. J. Eur. Ceram. Soc., 2006, 26(8): 1 317-1 323.

[24] Cook R F, Lawn B R A Modified Indentation Toughness Technique[J]. J. Am. Chem. Soc., 1983, 66(11): c200-c201.