Materials Literature
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A nano-structured surface layer was obtained on the surface of CP-Ti by surface mechanical attrition treatment(SMAT),and the nano-structured surface of the SMAT sample was analyzed by means of X-ray diffraction(XRD),scanning electron microscope(SEM) and high-resolution electron microscope(HRTEM).The tensile properties…
The polarization curve,EIS and CASS are used to study the impact of the main components of the trivalent chrome plating solution and process conditions on the corrosion resistance,with which we compare the coating's corrosion resistance of the hexavalent chromium plating.The results show that the corrosion resistance…
This paper takes the accuracy repair of the gantry milling machine guide produced by Coburg Company for example,and then introduces technologies to realize the repairment,Which includes grinding the ram guide,scraping the pallet guide,and plastics sticking treating on the piping.
Nickel-zinc ferrite Ni0.7Zn0.3Fe2O4(NZFO) films were fabricated on Si(001) substrate by a simple chemical method.The microstructure and magnetic properties were systematically investigated.X-ray diffraction results show that all samples have a single-phase spinel structure.The results of field-emission scanning electr…
Waste polyethylene was strengthened and modified by using halloysite nanotubes/silica,influence of composite structure and properties caused by fillers were studied.The results showed tensile strength,flexural strength and flexural modulus of composites increased remarkably with the increase of combination fillers con…
This paper introduced several new development of paper strengthening technology at home and abroad,including some new strength agents and new technology of using methods.
AlMCM-41 mesoporous molecular sieves with highly ordered structure are hydrothermally synthesized at 110℃ using pseudoboehmite as aluminum source,sodium silicate as silicon source and cationic surfactant of cetyltrimethylammonium bromide as template agent.Hydrodenitrogenation(HDN) catalysts are prepared by depositing…
The current state and research progress of azo dyes and azo metal dyes used as blue-ray optical recording media for new-generation high-density disc are reviewed.The structures,properties and applications of blue laser organic recording dyes including azo dyes and azo metal dyes are introduced.Their research trends ar…
Six new solid energetic complexes M(BTA)(bpy)m·nH2O [M=Mn,m=1,n=1;M=Co,m=2,n=5;M=Ni,m=2,n=6;M=Cu,m=2,n=0;M=Zn,m=2,n=1;M=Pb,m=1,n=0;BTA=N,N'-bis(1(2)H-tetrazol-5-yl) ammonium ion,bpy=2,2'-bipyridine] were synthesized and characterized.The enthalpy changes of liquid-phase reaction △rHθm,have been investigated.In additio…
Research progress in functional waterborne polyurethanes was summarized,including functional waterborne polyurethane coatings,functional waterborne polyurethane adhesives and others.In the end,the current situation and future development trend of functional waterborne polyurethanes were described.
Low carbon steel sheets produced by compact strip production(CSP)and traditional technology were cold rolled and annealed in laboratory.The evolution of microstructure and texture of the steel sheets were investigated by means of optical microscope and XRD.The results show that the texture in the steel increased sharp…
By introduce of melt composition and technical process expatiate mostly harm of nozzle blocking on produce gear steel.This article analysis and investigate the causation of nozzle blocking and calculate and analysis the addition level of calcium on calcium disposal in gear steel.
[Objective]The aim was to study the influencing factors of adsorption process of Cu2+ and Ni2+ on Laminaria japonica. [Method] There was 0. 2 g L. japonica powder added into 100 ml Cu2 + /Ni2 + solution. The vibration speeds of all the experiments were set at 120 r/min. The concn. of Cu2 + and Ni2 + in filtrated solut…
A high-silica SAPO-5 was hydrothermally synthesized at 473 K for 16 h,using metakaolin as a silicon and aluminum source and triethanolamine and cetyltrimethylammonium bromide with hydrofluoric acid as a template.The synthesized SAPO-5 sample was characterized by X-ray diffraction,Fourier transform infrared spectromete…
During the course of the hot rolling,oxidation affects not only consumption of the billet,but also the external quality of the steel strip,and it is disadvantageous to the next working procedure.So it is very important for us to understand the course and mechanism of oxidation.
By analyzing the failure modes,microstructure and properties of female die made of Cr12 steel,the causes of the early failure of the female die were found.The results show that the inhomogeneity carbide makes quenching tearing tendency of female die increase,grindability and resistance reduce.The net carbide makes the…
The biological function and life history have shaped the silk’s structures and mechanical properties. Here we examined two types of egg case silk with distinct biological functions: inner cover and scaffolding egg case silks produced respectively by the cylindrical and major ampullate glands of the golden-orb-weaving…
QPQ process is a surface hardening technology including both salt bath nitriding and salt bath oxidizing. The effect of temperature and duration of salt bath nitriding on the corrosion resistance of part subjected to QPQ treating was investigated by means of a salt spray test of low carbon steel piece subjected to QPQ…
The influence of corrosion of rebars on mechanical behavior of flexural beams was systematically studied through experiment.A total of 24 beam specimens were tested to investigate the effects of rebar diameter and corrosion ratio,etc.on the behavior of flexural beams by using electrochemical corrosion method for rapid…
Anomalous response is sensitive to various influencing factors,when a parameter has small changes,it is likely to affect whether or not the occurrence of anomalous response.Effects of material properties on anomalous response under blast loading was studied.The results show that for the thin circular plate,the occurre…