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It exhibits a large vacant site at the centre of the cell, which can be used for doping and varying the properties.
However, despite extensive research on Cu3N films, few systematic work on the optical properties of Cu3N films.
The crystalline properties of the obtained films were analyzed by XRD using D/max 2500 PC measurements with CuKα line.
Wang, Study on the preparation and properties of copper nitride thin films, J.Cryst.Growth. 274 (2005) 464-468
Boerma, Growth and properties of Cu3N films and Cu3N/γ′-Fe4N bilayers, Appl.

Introduction Drawability is one of the important properties in the press forming of steel sheets, and the r-value is a factor in drawability.
The representative mechanical properties of this material are shown in Table 2.
Both type of slip has similar Schmid factor [7].
This result indicates that the coincident of the slip plane at the grain boundary is an important factor in the transmission of internal stress to the next grain, and the high slip plane connectivity at the grain boundary may affect the selection of slip systems.
This specificity in the material affects the selection of the slip system during plastic deformation.

Introduction Zr-based bulk metallic glasses (BMGs) can be candidates for mechanical component applications because of their good forming ability, excellent strength, and better physical and chemical properties comparing with traditional Zr-based crystalline alloys [1, 2].
The thermal properties of the samples were characterized by differential scanning calorimetry (DSC, NETZSCH DSC 404C), at a heating rate of 0.33 K/s.
Free volume as defect in amorphous alloys is vital to the properties [12][13], which is affected by annihilation and redistribute at high temperature.
But the calculated enthalpy of relaxation is complex, influenced by many factors such as ramp, annealing temperature and so on.
The influence of factors on activation energy for the oxidation of bulk metallic glasses is complicated and should be further researched.

It was found that the substrate exhibits strong enhancement properties due to the surface plasma resonance(SPR) of highly ordered silver nanowire arrays.
Introduction Ordered nanostructure materials have attracted much attention because of their unique properties comparing with block and disorder nanostructure materials.
The characteristics of silver nanowire arrays assisted by AAO template were also discussed by SPR properties of the silver nanowires.
Notably, we have explored its strong enhancement properties of SERS by estimating enhancement factor for the silver nanowires substrate.
Then, the aluminum foils were annealed at 450°C for 4h to remove the inner mechanical stress.

The spot welding process is a complicated phenomenon, which involves the mechanical, thermal, electrical, magnetic and metallurgical factors.
Other techniques involve monitoring the mechanical response of the welding process, such as force, electrode displacement, and acoustic emission [2].
heat transfer model (4) The materials properties such as thermal conductivity, thermal diffusivity, specific heat and resistivity should be considered as functions of temperature
The magnitude of magnetic flux density in xoy plane was affected by many factors, such as welding current, the geometry size of welding device, and ferromagnetic material in the welding device and so on.
In this paper, forward model of magnetic field, inversion model of current distribution and temperature field models that include temperature-dependent materials properties, heat generated by resistance, as well as heat transfer between electrodes and cooling water were developed.

A CAE Approach for Pretest analysis of vehicle body frame vibration test LU Shou Wei 1, a, FENG Hui Hua 1,b , ZUO Zheng Xing 1,c , YUE Feng Lai 2,d 1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China 2School of Mechanical Engineering, Tianjin University, Tianjin 300072, China alswwt007@163.com, bfenghh@bit.edu.cn, czxzuo@bit.edu.cn, dyuefl@163.com Keywords: vehicle body frame, pretest analysis, NVH Abstract: Pretest analysis is a crucial step of the process for experimental modal analysis, directly affect the test accuracy.
Introduction During the past decade, experimental modal analysis has been extensively investigated, aiming at the improvement of vehicle NVH property.
The main difficulty in this approach is uncertain of excitation location and sensor placement, which have significant impact properties of test specimen on modal testing and measuring accuracy, therefore many researches are conducted in measurement location optimize involved pretest analysis.
As a consequence, the scaling factor ak is also purely imaginary
Theoretically the signal of impact force in time domain approximate express as: (6) Fast Fourier Transform process as: (7) Impact energy distribution is decided by two factors which are impulse force width and amplitude.

Material selection is one of the crucial stages in design and development process which depend on various physical, mechanical and manufacturing properties.
Factors such as low weight, cost effectiveness, environment friendly, renewable, biodegradable, recyclable and carbon credit gain has encouraged industries and nation to use natural fibre [8, 9].
Improper choice of material can negatively affect productivity, profitability and results in customer dissatisfaction [14, 15].
Kalibar, A study of the mechanical properties of steel / aluminium / GRP laminates, Materials Science and Engineering A. 412 (2005) 137–140
Santulli, The fracture properties of environmental-friendly fiber metal laminates, Journal of Reinforced Plastic Composite. 30 (2011) 499–508

The performance of lock-rope mechanism affects the safe and efficient operation of mine hoisting system directly.
The lock-rope mechanism with wedge angle 5° was designed by the mechanical analysis of wedge lock rope.
(a) simplified model (b) Meshing figure Fig.3 Simplification and meshing of solid model Based on the above key factors, the dynamic simulation analysis of the wedge rope-locking mechanism can be carried out by using the dynamic module of ANSYS/LS-DYNA.
Table 1 Definition of material type Material properties Title Density (N/mm3) Elasticity modulus (N/mm2) Poisson's ratio Material type The wire rope 7.85e-5 7.26e4 0.167 elastomer The wedge rope-locking block 7.85e-5 2.1e5 0.3 elastomer The bearing pedestal 7.85e-5 2.1e5 0.3 rigid body In the process of the locking rope, the wedge rope-locking block only has the vertical and horizontal displacement due to the limitation of the pressure plate, and the wire rope only has the vertical displacement.
Beijing: Mechanical industry Press, 2007.

Fire damage, could be one of important factors since European countries have been used pervious concrete in buildings construction.
At this level, the heat affects most materials, provoking the spontaneous combustion of some of them and affecting the resistance of others.
Aggregate deterioration results in micro-cracking and worsening of physical properties.
And steel fibers might also improve the mechanical properties, ductility and resistance against cracking.
[9] Xiaomeng Hou, Muhammad Abid, Wenzhong Zheng, Ghulam Qadir Waqar, “Evaluation of residual mechanical properties of steel fiber-reinforced reactive powder concrete after exposure to high temperature using nondestructive testing,“ Procedia Engineering, Vol. 210, pp. 588-596 (2017)

The physical and chemical properties of soil are shown in Table 2.
Properties of soil Chemical properties SiO2 Al2O3 CaO K2O MgO P2O5 Fe2O3 TiO2 LOI Content (%) 76.22 10.512 0.193 2.373 - 0.076 4.057 0.756 5.8 Physical properties Specific gravity (g/cm3) Liquid limit (%) Plasticity index (%) Content (%) 2.315 35.3 18.1 Results and discussion Effect of sodium hydroxide-sodium silicate ratio on geopolymerization.
It was indicated that curing temperature is one of important factor on strength of geopolymer soil.
Rangan, Development and Properties of Low-Calcium Fly ash based Geopolymer Concrete, Research report GC-1, Curtin University of Technology, Perth, Australia, 2005
Hongling et al., Synthesis And Mechanical Properties Of Metakaolinite-Based Geopolymer, Colloids Surf.A: Physicochem .Eng.Asp, 268, (2005), p.1-6