This paper gives a comprehensive summary about important experimental and theoretical results, research trends and contentious problems of metallic hydrogen since 1988. The main progress of research work in the past five years has involved the discovery a

Effects of milling conditions on structural changes of mixed 50Ni-50Ti powders in mechanical alloying have been characterized by X-ray diffraction analyses, quantitative relationships of microstrain,Crystallite size, lattice parameter and diffraction inte

On the basis of dual phase stainless steel, the effect of composition and microstucture on corrosive wear of alloys was investigated. The wear and erosion tests by pin-on-disc and in slurry pot in aggressive medium were carried out for exploring the appro

Mossbauer measurements at room temperature have been carried out on the B2 intermetallic compound Fe-40A1 and its Mn or Ti containing alloys.The reults show that all the Mossbauer spectra of Fe-40A1 and its Mn or Ti containing alloys are approximately one

The effect of laser processing parameters with an auto-feeding system on the dilution of the cladded coating has been investigated. The results indicate that the powder now rate plays the most important role in the dilution of the cladded coating, which d

TaN film was deposited on substrate of NiTi shape memory alloy by triode sputter ion plate.TaN film oxidized was formed at 600℃ for 1h under dry atmosphere. The properties, composition and structure of TaN film oxidized are studied.The result show that th

The effect of composition of oxide coating on the chlorine evolution rate of IrO2(5)TiO2(60)Co3O4(x) RuO2(35-x) / Ti anode prepared by thermal decomposition method was studied by x-ray diffraction and electrochemical techniques. The coating consisted of s

Al61Li2.5Y25Ni11.5(wt-%) amorphous alloys with high strength, low density and large Young's modulus were prepared by liquid quenching on a single roller melt-spinning apparatus. The highest tensile fractrue strength, Vickers hardness and Young's modulus o

The research works on loudspeaker vibration films and their developments were reviewed. Especially reviewed the diaphragms made by Diamond Film (DF) and Diamond Like Carbon (DLC). The methods and techniques for the preparation of diaphragms on tweeter mad

The optical properties of YSZ thin films synthesized by microwave plasma CVD process have been examined. The transmittances in the range of 230-900nm wavelength are about 72%. The technique of ac impedance was used to measure the conductivity of YSZ films

Sol-Gel is an effective method of preparing glass fiber. The stableness and spinnability of tetraethyl orthosilicate solution, and the crystallizability of silica glass fiber are studied in this paper. The optium amount of water and hydrochloric acid is d

ZnO nanocrystalline sensitive materials of doped Sb3+ were prepared by citrate method. The effect of doped Sb3+ on construction and dielectric property of ZnO nanocrystalline were studied. The most favourable experiment condition for the preparation of Zn

The non-heating gas sensing elements of SnO2 doped a-Fe2O3 and CeO2 have been prepared successfully. It indicates that the greater(142m2 / g) the specific surface area of gas sensing element is,the more the adsorbed OH- (O2-) is, thus the better the gas s

A toughened bismaleimide resin was made from his (4, 4'- maleimidodiphenyl)-methane and 2, 2-bis (4-hydroxy-3-allylphenyl) propane. The properties for the resins were determined and the effect of some factors on the properties was investigated. The result

The structural changes of Cu complex species in the sol-gel process of modified Cu ethoxide with acetic acid have been studied by determination of ESR. IR and visible spectra. It is demonstrated that dissolution of Cu ethoxide in methoxyethanol is ascribe

The chelating fibers with diethanolamine group or diethylamine group present great adsorption capacity, high adsorption rate as well as good selectivity for Au3+ ion. In addition, the adsorbed Au3+ion is reduced into metallic gold by the fibers, and the o

An instrument for testing interface bond strength of composites was developed, which could be operated at a constant rate in the range of 0-0.98N with an accuracy of 0.98mN. By this instrument, the interface bond strength τs of Nicalon SiC yarn reinforced

The indentation method for measuring the interfacial frictional shear strength in a series of metal matrix composites(MMC)is presented. A microindenter, made by Xian Jiaotong Univerity, is used to apply a force to the end of the single fiber and depress i

The transition of wear mechanisms and the microstructural changes of the SiCw / Al composites under unlubricated sliding friction were studied by XRD, SEM and TEM techniques. The results show that with increasing normal load and / or sliding speed, the we