用电导磁法无损检测40Cr钢连杆螺栓裂纹

利用钢铁零件的成分、组织结构、力学性能与其磁性能之间的关系和电磁无损检测仪的工作原理,通过两个实例阐明了在微型空压机生产中的快速电磁无损检测仪在生产中的具体应用经验.     

Tencel纤维强伸性能分析

对Ｔｅｎｃｅｌ纤维的强伸性能作了测试，分析，指出Ｔｅｎｃｅｌ纤维的强度，模量比粘胶纤维高得多，接近于聚酯纤维，并且湿强，湿模量损失较粘胶低得多，克服了人造纤维纺织品湿强低和保形性差的缺点。     

大面积水稻节水灌溉技术的研究

以玉林地区近４０年来大面积多种水稻节水技术开发的实践为基础，提出要解决的２个问题，导出４个理论公式和３组５个量化实用公式，以及长期稳定此技术的３个措施。     

Pre-bainitic Transformation in Fe-Ni Alloy

Ｔｈｅｐｒｅ－ｂａｉｎｉｔｉｃｐｈｅｎｏｍｅｎｏｎｉｓｏｎｅｏｆｔｈｅｉｍ－ｐｏｒｔａｎｔｓｕｂｊｅｃｔｓｏｆｂａｉｎｉｔｉｃｔｒａｎｓｆｏｒｍａｔｉｏｎｗｈｉｃｈｉｓｓｔｉｌｃｏｎｔｒｏｖｅｒｓｉａｌ．Ｏｎｅｖｉｅｗｉｓｔｈａｔｔｈｅｓｏｌｕｔｅａ...     

The dynamic evolution of aggregated lithium dendrites in lithium metal batteries

Lithium (Li) metal anodes promise an ultrahigh theoretical energy density and low redox potential,thus being the critical energy material for next-generation batteries.Unfortunately,the formation of Li den-drites in Li metal anodes remarkably hinders the practical applications of Li metal anodes.Herein,the dynamic evolution of discrete Li dendrites and aggregated Li dendrites with increasing current densities is visualized by in-situ optical microscopy in conjunction with ex-situ scanning electron microscopy.As revealed by the phase field simulations,the formation of aggregated Li dendrites under high current den-sity is attributed to the locally concentrated electric field rather than the depletion of Li ions.More specif-ically,the locally concentrated electric field stems from the spatial inhomogeneity on the Li metal surface and will be further enhanced with increasing current densities.Adjusting the above two factors with the help of the constructed phase field model is able to regulate the electrodeposited morphology from aggregated Li dendrites to discrete Li dendrites,and ultimately columnar Li morphology.The methodol-ogy and mechanistic understanding established herein give a significant step toward the practical appli-cations of Li metal anodes.     

STUDY ON Ni-Cr SYSTEM SOLAR SELECTIVE THIN FILMS PREPARED BY MAGNETRON REACTIVE SPUTTERING PROCESS

1. IntroductionSolar selective thiIl solid fil1us are the key part for solar heat collect'ors. But ll1ostfactories still produced solar absorptive filn1s by traditional tecIl11ology sucl1 as pai1ltillga1ld electrocl1eluical process that nlust result in po…     

THE PREPARATION AND CHARACTERISTICS STUDY OF TiNxOy SPECTRAL SELECTIVE ABSORBING FILM BY MAGNETRON SPUTTERING

Spectral selective absorbent film is a crucial factor for the solar heating device. There are many kinds of spectral selective absorbing film made by different ways. TiNxOy thin film with excellent spectral selecting absobent property were successfully prepared by DC magnetron sputtering with Ar as working gas, N2 and O2 as reactive gas, 99.9% titanium as the target and is copper slice as the substrate. In this article, the optical characteristics and microstructure of TiNxOy thin film were studied. Inputing O2 can decrease the reflection of the visible lights, and double layer film can get good absorption for solar energy.