Wear properties and microstructures of alumina matrix composite ceramics used for drawing dies

Yang, Xuefeng; Ze, Xiangbo; Wang, Hongyan; Wang, Hui

doi:10.1016/j.ceramint.2009.04.012

Cited by 11 publications

(1 citation statement)

References 3 publications

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“…Self-lubrication of friction surfaces, which enhances wear resistance and reduces friction coefficients, is currently an area of enhanced interest in materials science. Self-lubrication improves wear resistance of materials and reduces maintenance cost [1] . Self-lubrication is one of the most widely used methods for forming a new reparative film on the surface of a friction pair [2] .…”

Section: Introductionmentioning

confidence: 99%

Wear behavior of cold pressed and sintered Al2O3/TiC/CaF2-Al2O3/TiC laminated ceramic composite

et al. 2013

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A novel laminated Al 2 O 3 /TiC/CaF 2-Al 2 O 3 /TiC sandwich ceramic composite was fabricated through cold pressing and sintering to achieve better anti-wear performance, such as low friction coefficient and low wear rate. Al 2 O 3 /TiC/CaF 2 and Al 2 O 3 /TiC composites were alternatively built layer-by-layer to obtain a sandwich structure. Solid lubricant CaF 2 was added evenly into the Al 2 O 3 /TiC/CaF 2 layer to reduce the friction and wear. Al 2 O 3 /TiC ceramic was also cold pressed and sintered for comparison. Friction analysis of the two ceramics was then conducted via a wear-and-tear machine. Worn surface and surface compositions were examined by scanning electron microscopy and energy dispersion spectrum, respectively. Results showed that the laminated Al 2 O 3 /TiC/CaF 2-Al 2 O 3 /TiC sandwich ceramic composite has lower friction coefficient and lower wear rate than those of Al 2 O 3 /TiC ceramic alone because of the addition of CaF 2 into the laminated Al 2 O 3 /TiC/CaF 2-Al 2 O 3 /TiC sandwich ceramic composite. Under the friction load, the tiny CaF 2 particles were scraped from the Al 2 O 3 /TiC/CaF 2 layer and spread on friction pairs before falling off into micropits. This process formed a smooth, self-lubricating film, which led to better anti-wear properties. Adhesive wear is the main wear mechanism of Al 2 O 3 /TiC/CaF 2 layer and abrasive wear is the main wear mechanism of Al 2 O 3 /TiC layer.

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Section: Introductionmentioning

confidence: 99%