【摘要】 文章利用磁致伸缩空蚀试验机研究了GCr15在不同配比的乳化生物质油/柴油中的空蚀行为,利用光学显微镜及扫描电镜观察了试样表面形貌,并用失重法评价了不同空化介质对材料空蚀程度的影响。结果表明,空蚀6h后,GCr15在20%的乳化生物质油/柴油中的空蚀失重达到最大,空蚀损伤最严重,整个试样的表面呈现微小的蚀坑,呈蜂窝状,此外,表面出现了一些较大的空蚀坑,其周围出现明显的裂纹。更多还原

【Abstract】 The cavitation erosion behavior of GCr15 in emulsified biomass fuel/diesel with different components was investigated by using a magnetostrictive-induced cavitation vibratory apparatus.The surface morphology of specimen was observed by optical microscope and scanning electron microscope,and the degree of cavitation erosion of three mediums was evaluated by the mass loss method.The experimental results show that the maximum mass loss and the worst cavitation damage are gotten in emulsified fuel/diesel with 20% biomass after running for 6 h.Meanwhile,honeycomb-like micro-pits are generated on the surface of specimen,and some larger pits appear on the surface with obvious crack around.更多还原