Progress in Fracture and Damage Mechanics
Vol. 383
Vol. 383
Measurement Technology and Intelligent Instruments VIII
Vols. 381-382
Vols. 381-382
Innovation in Materials Science
Vol. 380
Vol. 380
Advances in Understanding the Fatigue Behavior of Materials
Vols. 378-379
Vols. 378-379
Progress in Bioceramics
Vol. 377
Vol. 377
Advances in Machining & Manufacturing Technology IX
Vols. 375-376
Vols. 375-376
Surface Engineering
Vols. 373-374
Vols. 373-374
High-Performance Ceramics V
Vols. 368-372
Vols. 368-372
Advances on Extrusion Technology and Simulation of Light Alloys
Vol. 367
Vol. 367
Optics Design and Precision Manufacturing Technologies
Vols. 364-366
Vols. 364-366
Bioceramics 20
Vols. 361-363
Vols. 361-363
Advances in Grinding and Abrasive Technology XIV
Vols. 359-360
Vols. 359-360
Progresses in Fracture and Strength of Materials and Structures
Vols. 353-358
Vols. 353-358
Surface Engineering
Volumes 373-374
Paper Title Page
Abstract: Steel castings with a ceramic reinforced surface layer have been prepared by a casting
process combined with self-propagation high-temperature synthesis (SHS). Two material systems,
Fe-Ti-C-Al and Al-Fe2O3, were selected in this paper to prepare the steel castings with a ceramic
reinforced surface layer. During the process, high temperature steel melt was poured into a sand
mould in which SHS performs were cast. The performs were ignited by the high temperature steel
melt. As a result, an SHS reaction happened and ceramic reinforcements were synthesized inside
the mould. After the penetration of the molten steel and the scattering of the ceramic reinforcement,
a steel casting with an in-situ ceramic reinforced surface layer was obtained.
666
Abstract: In this paper, by measurement of zeta potential and particle size the surface modification of
Cu nanoparticles in water was investigated at different pH values and different concentration of
sodium dodecylbenzenesulfonate (SDBS) dispersant. The results show that the absolute value of zeta
potential has very corresponding relation with particle size, and that the higher the absolute value of
zeta potential and the smaller of the particle size are, the better dispersion and stability of copper
nano-suspensions system is. It is also found that SDBS can significantly affect the value of zeta
potential and particle size by electrostatic repulsions, which lead to the enhancement of the stability of
the Cu suspensions, and the optimizing concentration for SDBS in 0.1% copper nano-suspensions is
0.07%, which have the best disperse results.
670
Abstract: The Cu-coated nano SiC composite particles were prepared by heterogeneous nucleation
method. For the heterogeneous nucleation process, the dispered nano SiC particles and the active
Cu2O precipitation were both prefabricated. The composite particles were characterized by means of
XRD, SEM, EDS, TEM and ED analysis technics. It is found that Cu layers are coated on the nano
SiC particles, which are continuous and dense, and partly oxidized to Cu2O, and the oxidation rate
can be reduced by improving experimental processes. The investigation on reaction mechanism
shows the disproportionating reaction speed of Cu+ can be controlled by adjusting the pH value of
reaction solution, which makes the degree of supersaturation of Cu crystallites accord with the
conditions of heterogeneous nucleation.
674
Abstract: A novel discotic triphenylene derivative bearing one triphenylene discogen as core and
three cyano-biphenyl moieties was synthesized and its thermal behavior was studied using polarizing
optical microscope, differential scanning calorimeter and X-ray diffraction. It was found that this
molecule containing [decylene?] spacers showed nematic phase. After being mixed with methyl
methacrylate (MMA), the discogen showed nematic phase at the mesophase temperature range
(64~85 °C) and oriented spontaneously in the mixture after annealing for 2 hours in the mixture. The
orientation can be stabilized by the polymerization of MMA. The orientation can be fixed by the
polymerization of MMA. It was treated directly on glass substrate, which surface did not treat by
polyimide film and confirmed the orientation was proved by X-ray diffraction. This offers If the
alignment of the discotic molecules can be freely controlled and fixed, a useful mean to produce new
area of optically anisotropic film will be produced with this material.
678
Abstract: The unitary thermal insulation fiber materials can not satisfy rigorous high temperature
environment usually. New inorganic coatings were prepared by adding SiO2 aerogels super-insulation
powder into high temperature adhesive. Aerogels are high dispersive solid materials which consist of
colloid particles or high polymer molecule and have continuous random network structure filling with
gaseous dispersive medium. The coatings with super insulation function were made by means of
adding thermal-proof materials to the coatings. The microstructure of light porous power and the
states of coatings on the surface of fiber paper under different state were observed by scanning
electron microscope (SEM). The insulated effect of the composite materials was tested by considering
thermal conductivity. On the basis of this, the coatings on the surface of fiber paper were optimized
according to the material thermal-insulation performance and the materials that could be satisfactory
to the service conditions were made in the end. The results show that silica aerogels powder is
dispersed equably in high temperature adhesive. The new inorganic coatings possess themselves of
good thermal-insulation effect and can be used as insulated space-layers. The insulation ability of
fiber paper is improved obviously.
682
Abstract: This paper reported a novel method to measure photoinduced acid generation in polymer
films, which were widely used in microlithography. The method employed Rhodamine B (RB) as
acid sensor due to its changes in color and uv-vis absorbency in acidic condition. The property of
Rhodamine B was examined in hydrochloric and trifluoromethyl sulfonic acids, and the standard
working curves in thin polymer film were set up, which indicated the relationship of acid
concentration and Rhodamine B’s relative peak absorption ("ABS). In this case, the difference in
absorbency could reflect the different amounts of acid generated. According to these standard
working curves, we can calculate the efficiency of photoacid generator (PAG).
This method has advantage over existing method in measuring the efficiency of photoacid generator
in solution, because it eliminated the influence of solvents.
686
Abstract: To solve the gelatin gum arabic electronic ink microcapsules’ problems of thin shells,
easy to break and poor mechanical properties, the above microcapsule was coated by
urea-formaldehyde polymer and double shell microcapsule was got. The surface morphology of
double shell microcapsules was observed by Metallurgical Microscopy, the dispersion particle size
of microcapsules was measured by Laser Particle Size Analyzer, the microcapsules’ hermetization
property was tested by UV-Vis spectrophotometer, and the mechanical intensity of microcapsule
was measured by Microcomputer Control Omnipotence Test Machine (MCOTM). It was found that
the microcapsule prepared by this method showed regular shape and increased size. Additionally,
both the hermetization property and mechanic intensity of the microcapsules were improved.
690
Abstract: Vertical deposition technique to fabricate thin film solid artificial opals is becoming widely
used. In present work, we report on solvent modification and its effect on the arrangement of colloidal
crystals. Micrometer-sized periodic stripe patterns of colloidal crystal were formed from the aqueous
ethanol mixture solvents containing higher concentration of ethanol.
694
Abstract: To prepare the nano-scale silver carboxylate emulsions and investigate their applications
in the preparation of nano-scale silver films, the silver citrate emulsion was synthesized through the
reaction of silver nitrate with sodium citrate in the presence of polyvinylpyrrolidone (PVP) as a
surface modification agent in water. The emulsion was coated onto the surface of the PET substrate
to form a thin latex layer of silver citrate. And this was followed by drying at about 100 °C. Then,
the silver citrate thin film was deoxidized by aqueous ascorbic acid. Finally, a translucent silver thin
film was formed on the surface of the PET substrate. Properties of the silver citrate emulsion and
the silver film on the PET were characterized by X-ray powder diffraction (XRD), Fourier
transform infrared spectroscopy (FTIR), laser particle size analysis, scanning electron microscopy
(SEM), thermogravimetry(TG) ,UV-visible absorption spectroscopy, atomic force microscopy(AFM)
and digital multimeter analysis. It was found that the silver citrate particle surface-modified by PVP
has a nano-rod structure and homogeneous size distribution. The nano-rod was about 20 nm in
diameter and 200 nm in length. For the UV-visible absorption spectrum of the thin film exhibited an
absorption peak at 430 nm, the silver thin film prepared on the surface of the PET substrate was a
typical nano-scale sliver film. Measurements of the sliver thin film at room temperature indicated
that the silver film was electrically conductive, and the surface resistance was 2.42 k5/cm.
698
Abstract: Surface modification is a process in which Si-CH3 groups of trimethylchlorosilane
(TMCS) replace -OH groups on the inner surface of SiO2 aerogels, so the surface property of aerogels
has shown hydrophobic performance which could be changed back to hydrophilic by 450 heat
treatment. This aerogels with surface property controlled are prepared via sol-gel process with polyethoxydisiloxanes
(E-40) used as precursor, and have typical porous structures dried at ambient
pressure: high porosity (above 90 %), super specific surface area (about 1000 m2/g), low bulk density
(down to 3.03 kg/m3) and average pore size is about 20 nm. This paper presents adsorption mechanisms
in aerogels and illustrates that the adsorption capacity of aerogels is three or four times as much
as that of activated carbon fiber (ACF) and granule of activated carbon (GAC). So SiO2 aerogels are
potentially important to be used as absorbents being quite efficient to adsorb toxic substances.
702