61 Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect H. Liao, M. Zeng and H. Chen 68 Impression creep behavior of magnesium alloy ZK60 J. D. Schnapp, V. Herold and J. Reuschel 73 Rauheitsanforderungen für die mobile Härteprüfung metallischer Werkstoffe C. Vivekanandhan, P. S. Sampath and S. Sagadevan 81 Preparation and characterization of Kevlar/glass fiber laminates with a nanoclay enhanced epoxy matrix R. Karakuzu, H. Kanlıoğlu and M. E. Deniz 85 Effect of seawater on pin-loaded laminated composites A. Chenni, H. Djidjelli, A. Boukerrou, Y. Grohens and B. Saulnier 93 Thermomechanical and acidic treatments to improve plasticization and properties of chitosan films: A comparative study of acid types and glycerol effects
In this article, solid lubrication FeS film was prepared on the surface of AISI 1045 steel by means of low temperature ion sulfurizing process. Scanning electron microscopy (SEM) was utilized to observe the surface and cross-section morphologies of the sulfurized layer. The element distribution of the sulfurized layer surface was analyzed by X-ray energy spectrometer. The crystalline phases were determined by X-ray diffraction (XRD). X-ray stress determinator was utilized to measure the residual stress in the sulfurized layer. The nano-hardness and elastic modulus of the sulfurized layer were surveyed by a nano-indentation tester. The results showed that the surface of the FeS film was composed of many minute spherical particles with homogeneous grain size and distribution. The texture of the film was very loose with lots of micro-pores, and the crystallinity was well. There was compressive stress in the FeS film, and the stress value measured is -150 MPa. The average value of nano-hardness and elastic modulus were 4.02 GPa and 157.36 GPa respectively.
The influence of residual magnesium on compact graphite rate and characteristic of thermal analysis curve was studied by fading of magnesium treated molten iron. The results indicate that with fading time, the residual magnesium decreases and the rate of compact graphite increases. The content of magnesium can remarkably change the characteristics of thermal analysis curve, such as the lowest eutectic temperature (TEU) and the recalescence degree △Tr.
In this paper, we adopted a novel method, namely, magnetron sputtering + low temperature ion sulfurizing composite technology to prepare synthetic MoS2/FeS multilayer film. The obtained film has a quite smooth surface with plenty of spherical particles. The friction tests were carried out on a ball-on-disc tester under dry condition. During the whole test, the friction coefficient of the MoS2/FeS multilayer film was always lower than that of the original 1045 steel and FeS film. In addition, the wear scar depth of the MoS2/FeS multilayer film was also low. It is undoubtedly that the synthetic MoS2/FeS multilayer film possesses excellent friction-reducing and wear-resisting behaviors.
The manganese oxides (MnO2) with nanostructures was fabricated with non-aqueous alcohol and aqueous solution of potassium permanganate (KMnO4) at room temperature. The test results show that the nano-MnO2 well coated on the surface of carbon nanotube (CNT), while the specific capacitance of the composites with MnO2 deposited on singlewall carbon nanotube (SWNT) was better than coated on multiwalled carbon nanotube (MWNT). The specific capacitance of MnO2 coated on SWNT film can reach 769F/g at scan rate of 5mv/s in the first cycle.
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