搜索结果: 1-15 共查到“知识库 材料的组织、结构、缺陷与性能 Structure”相关记录16条 . 查询时间(0.156 秒)
Carbon nanocones: wall structure and morphology
nanocarbon electron microscopy electron diffraction
2009/12/31
Large-scale production of conical carbon nanostructures is possible through pyrolysis of hydrocarbons in a plasma torch process. The resulting carbon cones occur in five distinctly different forms, an...
Effect of the sintering parameters on structure of the gradient tool materials
Powder metallurgy FGM Tool materials SEM
2009/12/14
Purpose: The purpose of this work was to obtain gradient tool materials, based on the unalloyed steel reinforced with HS6-5-2 high-speed steel, through using the conventional powder metallurgy method ...
The structure and properties of steel with different pearlite morphology and its resistance to abrasive wear
Abrasive wear Block sections Switch Pearlite morphology Isothermal annealing
2009/12/2
Purpose: The analyse of pearlite morphology changes as a result of hot rolling process and isothermal annealing.
Design/methodology/approach: Physical modelling of isothermal annealing for a transiti...
The influence of casting temperature on castability and structure of AJ62 alloy
Metallic alloys Manufacturing and processing Casting
2009/12/1
Purpose: The AJ62 magnesium alloy exhibit good elevated-temperature tensile properties, excellent creep
resistance and good castability. This alloy contains approximately 6% aluminum and about 2....
The influence of hot-working processing on plasticity and structure of duplex steel
Superplastic materials Plastic forming Microstructure
2009/12/1
Purpose: There are numerous branches of industry where the (α+γ) duplex steels have not yet been sufficiently
popularised due to problems with their forming, resulting from different properties of t...
Structure and properties of Titanium for dental implants
submicrocrystalline structure severe plastic deformation (SPD) ECAP
2009/10/23
This paper describes manufacture of nano-structural titanium, its structure and properties. Nano-titanium has higher specific strength properties than ordinary (coarse-grained) titanium. Nano-titanium...
Application of the analysis of variance for the determination of reinforcement structure homogeneity in MMC
Composite casting Homogeneity Analysis of variance
2009/8/20
These authors propose a new definition of homogeneity verified by variance analysis. The analysis aimed at quantitative variables describing the homogeneity of reinforcement structure, i.e. surface a...
Effect of the concentrated heat flow treatment on the structure and the antiwear properties of cast iron
GTAW method eutectic martensite strengthening wear resistance relaxation
2009/2/26
The influence of modes of surface fusion by electric arc plasma (GTAW method) on the hardness and wear-resistance of plain cast iron was studied. A possible mechanism of structural rearrangement in th...
Effect of the concentrated heat flow treatment on the structure and the antiwear properties of cast iron
GTAW method eutectic martensite strengthening wear resistance relaxation
2009/2/26
The influence of modes of surface fusion by electric arc plasma (GTAW method) on the hardness and wear-resistance of plain cast iron was studied. A possible mechanism of structural rearrangement in th...
Structure and mechanical properties of vermicular cast iron in cylinder head casting
Vermicular cast iron Structure Mechanical properties Cylinder head casting
2009/2/26
The paper discusses the problem of grain density and ferrite content in microstructure of vermicular graphite iron cast in bars of different section diameters and cylinder head casting. The experime...
Structure and mechanical properties of vermicular cast iron in cylinder head casting
Vermicular cast iron Structure Mechanical properties Cylinder head casting
2009/2/26
The paper discusses the problem of grain density and ferrite content in microstructure of vermicular graphite iron cast in bars of different section diameters and cylinder head casting. The experime...
Structure and superconductivity of isotope-enriched boron-doped diamond
boron-doped diamond superconductivity Raman spectroscopy isotope effect
2009/1/28
Superconducting boron-doped diamond samples were synthesized with isotopes of 10B, 11B,
13C and 12C. We claim the presence of a carbon isotope effect on the superconducting
transition temperature, w...
Fine structure characterization of zero-valent iron nanoparticles for decontamination of nitrites and nitrates in wastewater and groundwater
zero-valent iron nanoparticles nitrite nitrate chemical reduction kinetics XANES/EXAFS
2008/7/24
The main objectives of the present study were to investigate the chemical reduction of nitrate
or nitrite species by zero-valent iron nanoparticle (ZVIN) in aqueous solution and related
reaction kin...
Software package for structure analysis of quasicrystals
software quasicrystals structure analysis
2008/3/6
Recently a software package for the structure analysis of quasicrystals has been released,
giving a better environment for determining quasicrystal structures. Therefore we can analyze
their structu...
Structure and properties of gradient tool materials with the high-speed steel matrix
Tool materials Uniaxial pressing Sintering
2007/10/30
Purpose: This work concerns research on the structure and properties of gradient tool materials with the HS6-5-2 high-speed steel matrix reinforced by the tungsten carbide.
Design/methodology/approac...