共搜索到11817条信息,每页显示10条信息,共1182页。用时:0小时0分0秒328毫秒
......
Mechanism of Strength Loss of No-bake Phosphate Bonded Sand Mold/Core张友寿School of Automobile Engineering,Wuhan University of TechnologySchool of Mechanical Engineering,Hubei University of Technology摘 要:The strength loss mechanism of the phosphate bonded sand mold/core was studied. The morphology and composition of phosphate membrane on the surface......
]. Mater Trans, 2008, 49(2): 289-293. Stability of Y-doped BaZrO3 and its erosion resistance of titanium melts KANG Ju-yun1, CHEN Guang-yao2, LAN Bao-bao1, LI Bao-tong1, LU Xiong-gang1, 3, LI Chong-he1, 3... by the refractory, and its erosion resistance of titanium melts were investigated. The results show that the thickness 1700 mm of erosion layer of Y-doped BaZrO3 crucible is less than that (2000 mm......
J. Cent. South Univ. (2020) 27: 2999-3012 DOI: https://doi.org/10.1007/s11771-020-4524-6 Effects of temperature and age on physico-mechanical properties of cemented gravel sand backfills JIANG Fei... be exposed to the ambient temperature of 20-60 °C in the next few decades. In this paper, two types of cemented gravel sand backfills, cemented rod-mill sand backfill (CRB) and cemented gobi sand backfill (CGB......
J. Cent. South Univ. (2019) 26: 3114-3125 DOI: https://doi.org/10.1007/s11771-019-4240-2 Property changes of anchor grout calcined ginger nuts admixed with fly ash and quartz sand after accelerated... ginger nuts admixed by fly ash and quartz sand (CGN-(F+S)) has been validated to be basically compatible to earthen sites as an anchor grout. Accelerated ageing tests including water stability test......
% (mass fraction) sand in water with the help of spindle attached to a motor. Samples were fixed at different angles and varied rotating speed. Erosion wear rates were computed using mass loss method.... The hardness of the sand was HV 980 and the particle size varied from 200 to 300 ?m. Fig.1 shows the morphology of the sand. 2.2 Erosion test Wear test was carried out using an Erosion Tester (DUCOM......
Excellent mechanical properties and resistance to cavitation erosion for an ultra-low carbon Cr Mn N stainless steel through quenching and partitioning treatmentZe-an Zhou,Wan-tang Fu,Zhe Zhu,Bin Li...),the mechanical properties,and the resistance to cavitation erosion(CE)of the00Cr13Mn8Mo N steel after quenching and partitioning(Q&P)processing were investigated.The results show that the Q&P......
; 文献标志码:A High temperature erosion resistance of FeMnCrAl/Cr3C2 coatings deposited by high velocity arc spraying LUO Lai-ma1, LIU Shao-guang2, 3, YAO Ji-peng3, LI Jian2, WU Yu-cheng1 (1. College... temperature erosion resistance and erosion mechanism of FeMnCrAl/Cr3C2 coatings were studied using optical microscopy (OM), field emission scanning electron microscopy (FE-SEM). The results show......
incorporations, exhibited better resistance against cavitation erosion than ion plating Ti N coating and the substrate 304 L in ultrasonic cavitation tests. The NiCrAlTi coating free of N incorporation presents superior cavitation erosion resistance. However, the nitrogen incorporation within the NiCrAlTi coatings showed negative effects on the resistance against cavitation erosion.关键词:......
damaged surfaces were observed by scanning electron microscopy (SEM). The results showed that ZQMn12-8-3-2 had better cavitation erosion resistance than ZHMn55-3-1. After the cavitation erosion for 6 h...%) was larger than that of ZHMn55-3-1 (23%). The high cavitation erosion resistance of ZQMn12-8-3-2 was mainly attributed to its lower stacking fault energy (SFE), the higher microhardness and work......