AZ80 magnesium alloy was subjected to ECAP (equal channel angular extrusion) processing at 300. The evolution of microstructure, texture and mechanical properties influenced by the precipitation was investigated. The results show that ECAP processing significantly favored granular–like Mg₁₇Al₁₂ continuous precipitation in accompany with reducing time effectively during subsequent aging treatment; basal texture can be obtained via route A after ECAP with multi passes, whereas typical shear texture with most basal planes parallel to the shear plane of mode in route Bc; however the precipitation has not remarkable effect on the texture development during ECAP. A relative low ultimate tensile strength of 300 MPa and an improved elongation of 19% were obtained in the processed samples due to strong texture and coarse precipitates. Further optimization should be made by means of impeding the precipitation of the coarse particles before ECAP and decreasing the number of pass and pressing temperature.

The high temperature titanium alloy Ti–60 powder was prepared by Electrode Induction Melting Gas Atomization (EIGA) method. The variation in chemistry between nominal composition and powder was minimal and the increment of oxygen during gas atomization was less than 100×10⁻⁶, which insured the alloy composition and purity of the powder. The powder size distribution followed Gaussian distribution and the medium diameter (d50) was about 100 μm, which was decreased with the increasing of argon gas pressure during atomization process. The powder was nearly spherical and some powder particles were irregular. Some powders were hollow and the percentage of the hollow powder increased with the increase of powder diameter. The powder surface showed an obvious characteristic of solidification with distinct secondary dendrite and the rich–neodymium phase became apparent with the increase of neodymium content. The powder microstructure was composed of α martensite phase formed upon the high rate solidification process, which decomposed at 700^oC  micro–contently and at 850^oC heavily.

MoO₂ micro/nanosheets were synthesized by vapor-deposit process and characterized by XRD, SEM, TEM, UV-Vis and photoluminescence (PL) photometer. The results show that MoO₂ micro/nanosheet is rectangle, and the length and width range from several to dozens of micrometers and about 200 nm thick. The MoO2  micro/nanosheets have absorbance peaks between 200–300 nm, and three fluorescent excitations at 304.6, 343.4 and 359.6 nm. The synthesis mechanism of MoO₂ micro/nanosheets was discussed based on the experimental results and the thermodynamic computation.

Solid polycrystalline silicon particles were used as Si source for in situ hydrothermal synthesis of continuous silicalite–1 coating on SiC foam support in this paper. It is supposed that the Si dissolution rate was suppressed by using solid Si source, which subsequently led to zeolite crystals preferential nucleation and growth on the support. The loading amount, crystal size, layer thickness and specific surface area of the synthesized zeolite coatings were investigated with respect to the polycrystalline silicon particle amount and concentration of NaOH and reaction time. It is found that continuous zeolite layer can not form on the SiC foam ceramic support with too low amount of polycrystal silicon, because of the low concentration of silicic acid radical ions in the solution. By contrast, when the polycrystal silicon amount is too high, the zeolite loading on the support is low. In addition, increasing the NaOH concentration can promote silicon dissolution, increase the saturation concentration of silicon, promote the zeolite nucleation, and increase the loading of zeolite crystals. Zeolite layer with the maximum loading amount of zeolite and a specific surface area of 81 m2g−1 was fabricated on the SiC foam support under optimum conditions.

Macro-texture of decarburized specimens of conventional grain oriented electrical steels with MnS particles as inhibitors was determined by XRD technology. The microscopic texture and misorientation distribution between Goss grains and the other surrounding grains were analyzed after the decarburized specimens were heated up to 925 . The misorientation environment for different oriented grains of primary texture in the decarburized specimen was calculated based on the misorientation principles. Both experimental observations and theoretical calculations indicated the high angle characteristics of the misorientation between Goss grains and the surrounding grains, especially in the angle range of 30^o to 45^o. However, low angle misorientation was more emphasized arround non-Goss grains. Goss grains are still mainly surrounded by high angle gain boundaries after secondary recrystallization.

The effects of CuO and TiO₂ additives on the sintering behavior, microstructure, phase composition, sintering activation energy and the mechanism of lowering the sintering temperature of Al₂O₃ ceramics have been investigated. The TiO₂ began to dissolve into Al₂O₃ and formed Al₂Ti₇O₁₅ solid solution at the sintering temperature of 1150–1200^oC  , and the diffusion coefficient improved largely with the augment of Al ³⁺ vacancy concentration, which was the essential reason why the sintering process of A1₂O₃ ceramic had been promoted by the TiO₂ addition. However, the solid solubility limit of TiO₂ was 2%–4% (mass fraction), and it was unuseful for lowering the sintering temperature of A1₂O₃ ceramic by doping superfluous TiO₂. The temperature of TiO₂ dissolved into Al₂O₃ could be lowed down to 1100   with the addition of 0.4% CuO, which was effective to promote the sintering process of A1₂O₃ ceramic. The sintering activation energy of alumina ceramic doped with different CuO–TiO₂ was consistent with the above results. The sintering activation energy of A1₂O₃ ceramic was reduced to 54.15 kJ·mol⁻¹ by adding 4% TiO₂ and 2.4% CuO.

Phosphate coating on the surface of A3 carbon steel was prepared through the addition of Ca2+ and ozone as an accelerator of phosphating treatment at low temperature, and was characterized by SEM, XRD, EDS, FT-IR and corrosion electrochemical testing. The effects of Ca2+ and dissolved ozone in phosphating solution on the structure and performance of phosphate coating were investigated. The results show that the coating mass decreases with increasing the Ca2+ concentration in phosphating solution. Ca2+ can reduce the crystal size of coating and increase the density and corrosion resistance of coating. The dissolved ozone in phosphating solution can reduce the crystal size of coating and promote the growth of crystal, so the nucleation and formation rates are increased and the corrosion resistance of coating is improved. When pH=2.70, concentration of Ca2+ and ozone were 1.8 g/L and 2.50 mg/L respectively, the mass of phosphate coating was 5.46 g/m2, the corrosion-resistance time of coating with CuSO4 dripping was >122 s, and the corrosion current of phosphating sample was 0.50 μA/cm2 in 5% NaCl solution.

The Ag–Al₂O₃ cermet composite films with different filling factor were deposted on borosilicate glass substrates by magnetron sputtering. The spectral properties and structures of the films have been analysed by UV–Vis–NIR spectrophotometer and transmission electron microscope (TEM) respectively. The optical constants of the films were calculated by means of the Hadley equation based on the transmittance spectra and reflectance spectra. The variation of the surface plasmon resonance (SPR) peaks with filling factor was investigated. The results show that in certain extent the FWHF(full–width at half maximum) and intensity of SPR peaks increase with increasing filling factor, and SPR peaks redshifts with increasing filling factor.

A series of acrylonitrile–butadiene–styrene terpolymers (ABS) were synthesized by bulk polymerization using polybutadiene rubber as toughener. The mechanical properties of the resultant materials were investigated. The results show that high–cis rubber BR9004 has the best toughening effect far superior to the rest, and the IZOD notched impact strength of the relative material reaches 236.1 J/m; when it is combined with low–cis rubber 700A, the comprehensive mechanical properties of the later is comparable to Gaoqiao product (ABS 8434). The impact strength, tensile properties and elongation at break of materials increase with the increase of acrylonitrile content and molecular weight of resin phase. However, the tensile properties decrease with the rubber content increasing. The impact strength increases rapidly when the content of rubber is lower than 20%, but increases slowly when higher than 20%.

The low cycle fretting fatigue properties of 60Si2Mn were investigated in the condition of tensile-torsion multi-axial loading. The results showed that the tensile stress amplitude affect the fretting fatigue performance significantly. With the tensile stress amplitude increasing, the fretting fatigue life reduced nonlinearly, and the cycle softening occurred earlier and completed in less cycles. Oxide wear debris generated on the fretting wear scars have a significant impact on fretting fatigue, which exacerbated fretting wear in the early-stage of fatigue, and eased the wear later. Fretting fatigue crack initialed on the fretting wear scars, propagated along 45^o  angle to the axial direction at the existence of tangential shear stress, and eventually left tongue shape protrusion significantly at fracture. The greater the tensile stress amplitude, the bigger the tongue protrusion.

The microstructure characterization of Fe₂(MoO₄)₃ and Fe₂(MoO₄)₃/Si₃N₄ composite powder reduced by hydrogen were investigated, and the formation mechanism of the latter was analyzed. The results show that the microstructure of Fe₂(MoO₄)₃ powder particles reduced by hydrogen was consisted by Mo particles coated with thin layer of Fe with thickness around 20 nm. The microstructure of the other were two kinds of particles with different structure which were consisted by Mo particles coated with nanometer-thin layers of Fe with thickness about 3–5 nm and nano Fe–Mo nitride, Si and Mo as adhesive materials on Si₃N₄ particles surface. The formation reason of the microstructure of Fe₂(MoO₄)₃/Si₃N₄ composite powder reduced by hydrogen powder was two reactions during the reduction process. One is the decomposition-reduction reaction of Fe₂(MoO₄)₃, the other is the reaction between the surface of Fe₂(MoO₄)₃ and Si₃N₄.

Gibbsite was modified by using urea as modifying agent via a hydrothermal method. Effects of the amount of urea and hydrothermal times on the microstructures were investigated. The results show that the slice-like boehmite microstructure can be obtained at 140   for 24 h when the molar ratio of urea to gibbsite is less than 6 : 1, while the global ammonium aluminum carbonate hydroxide (AACH) microstructure can be prepared at 140   for 24 h when the molar ratio was more than 8 : 1. The formation of AACH depends on the hydrothermal times. Aluminum hydroxide turned from gibbsite to the mixture of boehmite and AACH. Finally, AACH is synthesized. The morphology of aluminum hydroxide transformed from the block to the slice, and the global AACH  trchitectures assembled by the lathes were obtained finally.

A novel biphasic calcium phosphate (BCP) amorphous CPP/crystalline β–TCP was prepared by adding calcium polyphosphate (CPP) into hydroxyapatite (HA). The effects of CPP dosage (mass fraction) on the phase compositions, sintering property, and mechanical strength of the composite were investigated. Results show that CPP would react with HA to produce β–calcium phosphate (β–TCP) and H2O, excessive dosage of CPP (>10%) would obtain a novel BCP (β–TCP and amorphous–CPP), and less dosage of CPP (<10%) would obtain a traditional BCP (HA/β–TCP). Meanwhile, high compressive strength could be obtained either at high sintering temperature (>1250^oC)  with small (0–15%) CPP dosage or at high CPP dosage (15–30%) at intermediate sintering temperature (1150–1250 ^oC).

The glass forming ability and the properties of TeO₂--Nb₂O₅--P₂O₅ ternary system were investigated in this paper. It was found that the transparent glasses with good quality can be prepared in the range of TeO₂ 80\%--90%, Nb₂O₅ 0--20%, P₂O₅ 0--20% (molar fraction). The chain--like glass network was stabilized by constructing with tellurium--oxide, phosphorus--oxide and few niobium--oxide coordination polyhedra. The transition temperature of the TeO2--Nb₂O₅--P₂O₅ glasses is from 394 to 425℃, and its refractive index is from 1.65 to 1.88.

The influence of characteristic inclusion parameters on ductility of 40CrNi2Mo steels produced by different metallurgy processes were analyzed by quantitative metallography, SEM and EDAX. Results show that decreasing the volume and size of inclusions and increasing the spacing of inclusions, the void nucleated by the inclusions coalescence by internal necking and the development of localized shearing between voids became more difficult in ductile fracture, so percentage reduction of area of VAR steels were better than ESR steel. Characteristic inclusion parameters had little effect on uniform elongation, strain hardening exponent and tensile strength.

Single-crystalline ZnO nanobelts with non-layered structure were synthesized by the solution route at 100   based on the transformation of the layered precursor (Zn(OH)_2−x(CH₃COO)_x n H₂O). The morphology, structure and optical property of the ZnO nanobelts were characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and photoluminescence (PL), respectively. It is indicated that the acetate anion and the weak organic alkali hexamethylenetetramine (HMT) play the critical role in the formation of the layered precursors at the beginning of the process.

The oxidation behavior of reaction–bonded porous silicon carbide (RPSC) ceramics with different open porosities was studied in dry oxygen between 1200 and 1500^oC. RPSC ceramics exhibited a rapid mass increase in the initial stage of oxidation and a slow mass increase in the following oxidation. This oxidation behavior of RPSC is more plausible to be represented by an asymptotic law rather than the parabolic law for dense SiC. The porosity of RPSC led to dominant internal oxidation mass gain in pore channels at the beginning of oxidation besides surface oxidation. The oxidation mass gain was proportional to the amount of the porosity. As the oxide growth rate near the pore mouth was much faster than the rate of oxygen supply to the interior of the pores, the pores were blocked by silica rapidly, which subsequently prevented the further oxidation of the inner pores.

Two hydrated strontium borate (SrB₂O₄·4H₂O and SrB₆O₁₀·5H₂O) were synthesized by liquid-phase precipitation method, and pure phase strontium tetraborate (SrB₄O₇) was obtained by high temperature calcination. The phase compositions, morphology and the high temperature sintering process of products were characterized by XRD, SEM, TG-DTA and chemical composition analysis. The effects of calcining temperature and holding time were investigated. The results show that the process of dehydration→amorphization→crystallization exists in the calcination of hydrated strontium borate. SrB₆O₁₀ is unstable at 800^oC,  and decomposed into SrB₄O₇ and liquid boron oxide. Pure strontium tetraborate was obtained with SrB₂O₄·4H₂O and SrB₆O₁₀·5H₂O as raw materials, which were calcined at 900^oC for 4 h. With the increasing of reaction time, the crystallization degrees of products are improved, but the crystal structures are unaffected essentially. SrB₄O₇:Eu phosphors were prepared using this method. It is also found that the emission intensity from the sample is higher than that synthesized using SrCO₃ and H₃BO₃ as raw materials.