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日本<纤维学会志>具有明显的办刊特色.每期内容分为"纤维和工业"和"论文"两大部分,由两个编委会负责编辑."特集"的编排形式构成信息的集合强势,强化了刊物的引导作用.每期有计划地进行同类信息组合,体现编辑的选题策划性和刊物的导向性.每期大量详细地报道会议和学术活动信息,也是给读者的信息大餐. 相似文献
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In this paper the effect of alloying elements on the environmental embrittlement of Ll2 type intermetallics is summarized. The results show that the ductilizing effect of boron doping in Ni3Al is mainly to suppress the moisture-induced environmental embrittlement. The mechanism of this suppression effect is proved
to be related to its severely reducing the hydrogen diffusivity along the grain boundaries. However, the boron doping in Co3Ti alloys does not have the same effect of suppressing the environmental embrittlement. The different behavior of boron doping
in Ni3Al and Co3Ti may be attributed to its different segregation behavior on the grain boundaries. Boron in Co3Ti does not segregate on the grain boundaries and can not effectively reduce the hydrogen diffusivity along the grain boundaries.
The moisture-induced environmental embrittlement of Co3Ti alloy can be completely suppressed by the addition of Fe. It is proved by Auger that this suppression effect is due to
its obvious reduction of the kinetics of the surface reaction with water vapor.
Supported by the National Natural Science Foundation of China (Grant No.59895157,59081415,59371002,59771007) 相似文献
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The fracture behavior of disordered and ordered Ni4Mo alloy was investigated by tensile tests in hydrogen gas or during hydrogen charging. The results show that the ductility of the disordered alloy decreased slightly with the hydrogen pressure increasing, while that of the ordered alloy decreased rapidly with the hydrogen pressure increasing. However, the ductility of both disordered and ordered alloys reduced similarly seriously with the charging current density increasing. Therefore, the mechanism of order-induced embrittlement of Ni4 Mo alloy in hydrogen gas is supposed to be that atomic order accelerates the kinetics of the catalytic reaction for the dissociation of molecular H2 into atomic H. 相似文献
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Fe3Al-basedintermetallicsisapromisingmaterialforitsapplicationathightemperatureduetoitslowcostandexcellentresistancetooxidationandsulfidation.However,itspoorambient-temperatureductilityhindersitfi.ompotentialusingasstructural1llaterials.Thishasbeenimprove… 相似文献
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针对文后参考文献的著录问题,结合编辑工作的实践经验,从核实其真实性、确保其准确与规范、优选参考文献、审核引文等环节入手,介绍参考文献编辑加工的实施步骤与方法,并对遇到的问题提出具体的解决方法. 相似文献
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高校人力资源档案信息化管理系统的建设与思考 总被引:1,自引:0,他引:1
文章介绍了人力资源档案信息化管理系统实施的重要性,并从人力资源档案信息化管理系统的研究与实施、实施效果及实施人力资源档案信息化的思考等方面阐述了人力资源档案信息化管理系统在高校人力资源管理中的重要作用. 相似文献
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1IntroductionNickel-based alloys containing 20 -30 wt % Mo isknown to be essential for corrosion resistance in re-ducing media[1],especially for resistance to HCl at alltemperatures and concentrations[2]. However , uponexposure to elevated temperatures in the range of600 -800 ℃,these alloys suffer an al most completeloss of roomtemperature ductility as a result of long-range ordering (LRO) to Ni4Mo .It is considered thatthe loss of ductility mainly results from the environ-mental embrittle… 相似文献
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今人在注释李清照《一剪梅》中"轻解罗裳,独上兰舟"一句时,对"轻解罗裳"的解释多有不同,大致可归类为以下三种。第一种解释为"脱下裙子",如北京出版社《历代名家词赏析》:"‘轻解罗裳’写词人轻轻解开丝罗的裙衣";湖南大学出版社的李元洛辑注《在天 相似文献