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采用粉末冶金工艺制备基体致密、表层多孔含油的双层复合铁基粉末冶金材料,用HDM-20端面摩擦磨损试验机评价其摩擦磨损性能。结果表明,当复层材料表层的孔隙率约为23%时,试样稳定运行时间长,减摩耐磨性能好;与相近孔隙率的单层材料相比,复层材料的减摩耐磨性能与承载能力得到明显提高。
The powder metallurgy process was used to prepare double-layered composite iron-based powder metallurgy materials with dense matrix and porous surface oil. The friction and wear properties were evaluated by using the HDM-20 friction and wear tester. The results show that when the porosity of the surface layer of the composite material is about 23%, the sample runs steadily for a long time and has good anti-friction and anti-wear properties. Compared with the single-layer material with similar porosity, the anti-friction and wear resistance Performance and carrying capacity has been significantly improved.