Advanced theoretical-computational techniques combined with the power of computers provide an understanding of matter at the electronic and atomic scale with an unprecedented level of detail and accuracy, enabling the materials design and properties predi

Transforming behavior of original oxide film of Cu-30Ni-1Fe-1Mn alloy exposed to seawater was firstly observed in present work. A Mn-rich original surface oxide film with its inner film of low valence manganese oxide could usually transform into a Ni-rich

With Al2O3 and graphite as raw materials. AIN whiskers were fabricated by carbon thermal reduction method. The influence on AIN whiskers, such as additive effect, temperature control, was considered. The fabrication mechanism and growth characteristics of

The crack propagation behavior in whisker reinforced ceramic composites is described analytically by establishing the R-curve equation that involves two toughening mechanisms, crack bridging and crack deflection. The equation is used to calculate the R-c

Chemical denucleation is introduced to the study of undercooling. 100g Ni-Sn eutectic alloy is undercooled up to 268K under slow cooling condition by means of combination of melted glass denucleation, cyclical superheating and cooling with atmosphere chem

Recrystallization textures of cold deformed metals are greatly affected by heating rate. In this paper, the laser heating technique was applied to the ultra-rapidly annealing of coldrolled pure copper. The results showed that the texture development kine

The friction and wear properties of hot-pressed Al2O3-TiC-Co advanced composites under single abrasive, which have been made by use of Al2O3 and TiC powders chemically coated with cobalt film on their surfaces, have been studied in this paper with the hel

The tetragonal zirconia polycrystals containing Yb2O3 and CeO2 (Yb-Ce-TZP) with high fie-cural strength and toughness were obtained by using nanopowders as raw materials. The stabilizing agents were added to the specimen by mixing Yb2O3, CeO2 and ZrO2 na

This paper dealt with the J-integral and COD versus loading level and the relationship between J-integral and COD under mixed modeⅠ+Ⅱ loading in aluminum alloy LY12 by finite element method and fracture test. The results show that: 1)the J-integral and th

TG-GC, IR, elemental analysis and XRD were conbined to trace the Pyrolytic process of polysilazane synthesized by coammonolysis of MeHSiCl2 and Me(CH2=CH)SiCl2 in equimolar ratio. The transformation from organic to inorganic skeleton under N2 was complete

In this research, aiming at the reguar microscopic porous anodic oxidized layer of Al material, the friction coefficient of anodic oxided Al material is dereased from about 0.7 to less than 0.3, and its wear to tribo-couple is lowered about 3 orders becau

A new kind of metal matrix composites with the matrix of pure magnesium and the reinforcements of hybrid SiC. and Al2SiO5f was fabricated and the relationships of its damping capacity with strain amplitude, frequency and temperature were studied in this p

PEG was added into TEOS-Water-Ethanol-catalyst system. The effects of the PEG on SBET, particle radius distribution and pore structure in silica sol and gel were studied. From the changes of the particle sizes in' the sol, the model of the PEG behaviour i

Many mechanisms for the effect of reactive elements on the selective oxidation and scale adhesion of alloys have been proposed. However, nanocrystallization(or microcrystallization) has recently been found to have almost the same efFect as that of reactiv

The effects of adsorption conditions, which influence upon the redox adsorption of activated carbon fiber (VACF) towards Pd2+, were systematically investigated. The experimental results indicated that the adsorption capacity of VACF towards Pd2+ significa

Carbon-coated nickel nanocrystals were prepared by using the carbon arc method.The morphology,formation and properties of carbon-coated Ni nanocrystals and other fullerene-related carbon cluSters produced from the composite anode of a graphite rod filled

In this paper, a layer of mixed powder CaHPO4·2H2O-CaCO3-Y2O3 at the surface of TC4 was made into a layer of HA coating by laser cladding. Effect of Y2O3 in coating on properties was studied. The results show that adding Y2O3 in coating is favorable to im

Novel tribological iron-base materials containing both as-rapidly solidified eutectic cementite and fine graphite nodules were successfully fabricated by partial graphitization of cementite through heat treating laser melted/rapidly solidified ductile cas

The doping of the silica gel glass with photoactive substances has received considerable interest. The nature of doping surroundings may affect virtually the photochemical stability, thermal stability and optical properties of the photoactive molecules. I

α-Al2O3 nanocrystalline powders were synthesized by calcining the dry Al(OH)3 gel prepared from aluminum nitrate and ammonia. Phase transformation sequence of dry Al(OH)3 gel during heating is Al(OH)3 →γ-AlOOH →γ-Al2O3 →δ-Al2O3 →θ-Al2O3 →α-Al2O3. NH4NO3 i

Sol-gel processing is one of the most important method of fabricating thin film. From solution to gelation film, aggregation of gelation particles is relative closely to the continuity of thin film. Thus, it is necessary that aggregation is described efFe