92117 Unit of PLA

Beijing, China

92117 Unit of PLA

Beijing, China

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Wang J.,92117 Unit of PLA | Zhang Y.,Navy Engineering Quality Suspervision Station
Advanced Materials Research | Year: 2013

Aluminum alloy-aluminum-steel cladding plates were manufactured by explosive welding. Microstructures of the cladding plates were observed and the interface bonding properties were tested. Aluminum alloy-aluminum-steel transition joints were produced by welding the explosive cladding plates. The bonding interface configuration and property were investigated and tested after welding. The effects of welding technology on the interface bonding properties were discussed. The results showed that metallurgical behavior has been occurred at the bonding interfaces between aluminum alloy and aluminum and aluminum and steel. Regular sine waves have appeared on the bonding interface between aluminum alloy and aluminum. However, the bonding interfaces between aluminum and steel present line-shape. The shear strength and separate strength of the cladding plates were much higher than the standard strength. After being welded, the configuration of the bonding interface has no marked change. The strength of the bonding interface decrease a little. The welding technology had no remarkable effect on the bonding interface of the aluminum alloy-aluminum-steel cladding plates. © (2013) Trans Tech Publications, Switzerland.


Liu S.,92117 Unit of PLA | Wang K.,92117 Unit of PLA | Feng B.,92117 Unit of PLA | Feng B.,PLA Logistical Engineering University
Petroleum Processing and Petrochemicals | Year: 2013

Based on the experimental methods abroad, a simulating evaluation method for bearing corrosion property of synthetic aircraft lubricants was established with two kinds of synthetic aircraft lubricants as standard. The bearing corrosion properties of the two standard lubricants and seven kinds of synthetic aircraft lubricant samples at home and abroad were evaluated. The results show that the method has favorable repeatability and distinguishability and those two kinds of standard lubricants can simply and unfailingly ensure the efficiency of the experiment. Through the evaluating method, the bearing corrosion properties of synthetic aircraft lubricants can be distinguished.


Li C.,92117 Unit of PLA | Li J.,92117 Unit of PLA | Wang J.,92117 Unit of PLA | Sun X.,Shandong University
Asian Journal of Chemistry | Year: 2014

The system model is first established by simplification and idealization and then the average binding energies are calculated using AM1 semi-empirical method and applying periodic boundary condition to this study. The results show that the system added to antirusts binding energy is much larger than that of demulsifier, so that the formation of the interfacial film is relatively stable, which easily leads to emulsification. While the binding energy of interfacial film formed by demulsifier is weak and the strength of interfacial film is lower, which has a good ability of demulsification.


Li J.,LEU | Chen G.,LEU | Hu Z.,92117 Unit of PLA | Gao Y.,92117 Unit of PLA | Zhao L.,LEU
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | Year: 2016

The dimer acid was synthesized with oleic acid as material and characterized by using Infrared spectrometer. Its tribological properties as anti-wear additive in jet fuel and the lubricity effect of the compounded use of dimer acid with naphthenic acid additive T1602 were evaluated by using both the high frequency reciprocating rig (HFRR) and ball-on-cylinder lubricity evaluator (BOCLE). The morphologies and elemental distribution of the worn steel surface were analyzed by means of scanning electron microscopy and EDS. It is found that the synthesized dimer acid had contribution to the improvement of jet fuel lubricity with its addition above 80 μg/g, while the lubricity request of jet fuel was satisfied with the mass fraction of dimer acid in the range of 15-20 μg/g. The lubricity effect of compounded additive was not obvious at 40 μg/g of dimer acid, due to the competitive adsorption between naphthenic acid and dimer acid. The dimer acid could be adsorbed on the metal surface with strong chemical activity, forming a stable oxygen-containing layer of chemical film to act well anti-wear effect with some corrosive action. © 2016, Science Press. All right reserved.


Feng B.,92117 Unit of PLA | Feng B.,PLA Logistical Engineering University | Liu S.,92117 Unit of PLA | Chen G.,PLA Logistical Engineering University | Wang K.,92117 Unit of PLA
Huagong Xuebao/CIESC Journal | Year: 2012

A series of lubricating oils containing different mass fractions of anticorrosion additive were prepared. Static adsorbent experiments using simulating axletree balls in those lubricating oil samples were performed. The absorbency of lubricating oil before and after the adsorbent experiments were measured with UV spectrograph, and the adsorbent quantity of anticorrosion additive was calculated through the absorbency difference of the lubricating oil before and after the adsorbent experiments to characterize the adsorption effect of anticorrosion additive. The temperature and humidity of ocean environment were simulated through a self-made equipment, and the axletree balls with which adsorbent experiments were performed in the lubricating oil were put into the equipment to do the corrosion experiments. Data processing on the laboratory findings was made according to the hierarchical corrosion grade criterion, and the anticorrosion ability of the lubricating oil was estimated on the basis of axletree balls' corrosion grade. The relationship between adsorbent quantity of anticorrosion additive on the axletree balls surface and anticorrosion ability of lubricating oil indicated that the anticorrosion ability of lubricating oil was determined by the adsorption effect of anticorrosion additive.

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