Search results

These results suggest that the accumulation of Bi ahead of the Cu6Sn5 layers can affect not only the interfacial reaction barrier but also the local thermodynamics at the interface between the Cu6Sn5 layer and the solder.
The eutectic Sn-3.5Ag alloy is an attractive solder candidate for replacing the conventional Sn-Pb solder due to its excellent mechanical properties.
Bi is considered to be a ternary alloying element for engineering the eutectic Sn-3.5Ag solder with the desired physical and mechanical properties [2].
Bi accumulation ahead of the η sub-layer can affect the growth kinetics of the IMC layer as a result of its influence on the following factors: (1) the interfacial reaction barrier at the η/solder interface, (2) local compositions of the η and solder phases at the η/solder interface, and (3) the diffusivities of Sn and Cu in the solder matrix.
However, this study suggests that, in order to understand the growth behavior of the IMC layer at a low aging temperature such as 130°C, the influence of Bi accumulation on the factors (2) and (3) also needs to be considered.

It was revealed that the surface modification of nano particles significantly affected sintering behaviors and resulting physical properties.
In consideration of this, the effects of preparation conditions on surface states such as aggregation property and surface adsorbed organic molecules and subsequent sintering behavior are very crucial to the optimization of the properties of ceramic materials.
Also, the effect of the fuel to nitrate ratio on powder properties and consequent sintering behavior was inspected in glycine nitrate combustion process.
Finally, it can be concluded that the surface condition is a very important factor in affecting the sintering behavior of nano particles in comparison to micron-sized particles.
Thus, the effective control of the surface state of nano particles is needed to maximize the sintering properties of GDC nano particles.

These films have very specific properties which can be very different from that of the bulk material.
The objective is to highlight the effect of a thermal treatment on the thermal properties.
Identification of the Thermophysical Properties of Thin Film and of the Film/substrate Interface.
Consequently, the modifications of the film composition and the porosity can occur during the growth phase affecting simultaneously the thermophysical and mechanical film properties.
The mechanism could be complex because there are possibilities that porosity creates a denser structure affecting film adhesion.

These factors can significantly impact the functionality and operational lifespan of critical components, such as control buttons and switches.
Categories of Equipment Failures This is the most prevalent cause of equipment failure, affecting all types of machinery.
Numerous studies have investigated the influence of TPU powder on the mechanical properties of printed items.
This segment imparts elasticity and elastomeric properties to the TPU.
Mechanical Properties of Additively Manufactured Thermoplastic Polyurethane (TPU) Material Affected by Various Processing Parameters

Many factors such as special topology structure characteristic of reinforcement, hardness and elastic module are discussed in this model.
The abrasive wear resistance of IPCs has been found to be significantly lower than that of matrix owing to the changes of microstructure, the morphology, the volume fraction and mechanical properties of reinforcing phase.
Mathematical model Wear losses of IPCs result from three distinct factors: the wear of the matrix, the wear of reinforcement phase and fracture damage of reinforcement due to cracks.
Owing to the special topology structure of IPCs, the distributions of compressive loads carried by reinforcement are different from the discrete phase reinforcement. 3-D geometry models of porous network structure (which were shown in Fig. 1a) can be used to estimate their mechanical properties based on the mechanisms of fracture failure.
[10] Gibson, L.J. and Ashby, M.F.: Cellular Solids: Structure and Properties (Cambridge University Press, Cambridge 1997), [11] E.

The FSW offers several advantages such as better mechanical properties, less distortion, weight savings, and fewer weld defects [3].
Material model and properties: Aluminum alloy 6061-T6 was chosen as a material for work pieces (See Table 1 for components).
The temperature dependent material properties for Al 6061T6 as used by Chao and Qi [15] are tabulated in Table 2 and 3.
The curves exhibit a classical behavior and mechanical properties.
[18] Cederqvist, L., and Reynolds, A.P., "Factor Affecting the Properties of Friction Stir Welded Aluminum Lap Joints," The Welding Journal Research Supplement, December 2001, vol. 80, no. 12, pp. 281-s through 287-s.

Properties of AZ31 magnesium alloys subjected to different extrusion processes S.S.
Abstract: The AZ31 magnesium alloys were subjected to indirect and direct extrusion processes, respectively, and the properties of the extruded alloys were compared.
In this study, commercial Mg-3Al-1Zn (AZ31) alloys were subjected to the indirect and direct extrusion processes, respectively, and the properties of the indirect-extruded alloy were compared with those of the direct-extruded alloy.
The factors affecting the twin formation include texture, grain size, and second-phase particles.
Summary The AZ31 magnesium alloys were extruded at an initial billet temperature of 300°C and at an extrusion exit speed of 10 m/min by indirect and direct extrusion processes, respectively, and the microstructure, texture and mechanical properties of the extruded alloys were compared.

Li 1,b 1 College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China a sxczzh@126.com, blwd4112@163.com Keywords: Fluid Magnetic Abrasive (FMA)，Rheological property，Finishing mechanism Abstract.
The fluid magnetic abrasive (FMA) is a new kind of finishing technology, which are developed based on the rheological properties of magnetorheological fluid and magnet fluid[1].
While, two factors are required.
In this razor-thin layer, the movement velocity of the abrasive particles of FMA is far less than that of the workpiece because of the affecting of shearing stress.
Demchuk: "Structure Physical Properties and Dynamics of Magnetorheological Suspensions", Multinhase Flow, Vol. 12 (1986) No. 6, p.935-955

In this research, oxide growth temperature was the major factor affecting the threshold voltage (69%), whereas halo implant tilt was the second ranking factor (20%).
Wang et al. [3] have reported that the halo implant angle plays an important role in device properties.
The optimizations of the NMOS device has been done by changing individual process parameters (factors) laid out by the ATHENA [9].
In the nominal-the-best, there are two types of factor to find which are dominant and adjustment factors.
For NMOS device, oxide growth temperature was found to be the major factor affecting the threshold voltage (69%), whereas halo implant tilt was found to be the second ranking factor (20%).

Pan and Sheppard [5] calculated stress intensity factors for crack propagation through the plate by numerically utilizing finite element analysis.
Table1 shows mechanical and fatigue properties of the sheet and nugget.
Table 1 Mechanical and fatigue properties of the sheets and nuggets.
Because of these factors, the deformation of spot-weld specimen is very complex due to these factors, especially around the nugget.
Stress intensity factors in spot welds.