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In recent years, people have improved the surface properties of cobalt based alloy through surface modification technology, which effectively improved the clinical effect.
Niobium, tantalum, zirconium and titanium have similar organizational structures and chemical properties[9].
In the machinery industry, the surface morphology of the mechanical parts not only has a great influence on the mechanical properties of the mechanical system, which conclude the friction wear, contact stiffness, and the transmission precision, but also has a close relationship with thermal conductivity, electrical conductivity, corrosion resistance and other physical properties, which affects the mechanical and instrument precision, reliability, vibration resistance and service life.
The surface quality of mechanical parts is an important factor in its functional properties.
The surface topography greatly influences the contact surface friction and wear, lubrication, sealing, corrosion resistance, thermal conductivity, anti-fatigue and other functional properties.

This paper reviews on the use of heat released information for a better understanding on the reaction kinetics of geopolymerization and correlating the heat released with several factors including concentration of alkaline solution, mixing designation and curing temperature.
As such these conditions could affect the heat released during geopolymerization and compressive strength of geopolymer, both of heat released and compressive strength may be correlated with each other.
It is proven to be affected by certain factors such as concentration of activating solution and reaction temperature.
As previous studies focussing on heat released in geopolymerization for the whole proposed steps in geopolymerization, a further study on correlating the heat released during geopolymerization to the mechanical testing will be useful to give a better understanding in geopolymer.
Both of fly ash and metakaolin have been widely studied for its mechanical properties but the chemical insight of the reaction mechanism using these materials remain to be discovered.

Because of design and processing limitation and other factors, there are problems related to parallelism, dimensional accuracy and shape accuracy of the fabricated comb capacitor.
Because the electrostatic comb-drive has many advantages, such as not having a capacitive gap limitation and higher quality factor, large drive amplitude, independent driving force, and easy signal processing, the comb capacitive micro-machined gyroscope has become an attractive micro structure.
Fig. 1 Fabricated comb structure Fig. 2 Simulation of the equipotential line distribution In the analysis of the mechanical properties of electrostatic driving structures, the accurate calculation of the capacitance of comb structures is important8.
These errors will affect the calculation of the comb capacitance.
IEEE Micro-electro-mechanical Systems, Fort Lauderdale, (1993), p.143-148

Once the parameters are optimised, these are taken to manufacture walls of 150x150x10mm from which specimens for mechanical characterization are extracted, using EDM (Electrical Discharge Machining).
A set of tensile tests have been conducted to evaluate the mechanical properties of the SS316L and INC718 alloys.
Regarding tensile strength, the heat treatments had a positive impact on the mechanical properties, which is ideal for applications such as aircraft landing gear.
Forming Process, Microstructure, and Mechanical Properties of Thin-Walled 316L Stainless Steel Using Speed-Cold-Welding Additive Manufacturing, 2019. [9] A.
Investigation of process factors affecting mechanical properties of INCONEL 718 superalloy in wire + arc additive manufacture process, 2019.

The microstructure of the cast steel, i.e. tempered martensite lath microstructure with high density of dislocations and fine precipitates (carbides and carbonitrides), provides excellent mechanical properties up to the temperature of 600 oC [1, 2].
Influence of heat treatment on the microstructure and mechanical properties and low cycle fatigue of the cast steel has been shown e.g. in [9, 10] and [11], respectively.
For the applied parameters of fatigue process (strain and temperature) the values of shape factor for subgrains are similar and range between 0.683 ÷ 0.701.
The MX particles, however, affect the recovery delay of the dislocation substructure.
Golański, Effect of the heat treatment on the structure and mechanical properties of GX12CrMoVNbN9 -1 cast steel Archives of Mater.

The centreline cooling curve, together with the die temperature and the thermodynamic properties of the alloy are then used as inputs to compute the solution to the Stefan problem of a moving phase boundary, thereby providing the through-thickness cooling curves at each chosen location of the casting.
In order to predict mechanical properties, it is critical to determine the skin thickness or area fraction of that region.
In the current study, these factors were obtained from simulation results.
The literature confirms [6] that the IHTC is affected by alloy composition, pressure, initial die temperature, superheat, geometry of mold and die materials.
Sharifi et al, “Process-structure-property correlations for HPDC AM60B” TMS (2015 )Pages 351-356

However, due to low molecular weight of asphalt and its wide distribution, mechanical properties, greater sensitivity to temperature, low-temperature brittle, high temperature and easy flowing, almost inflexible,aging resistance poor enough so greatly restricted its application.
Japan as early as the 1970s, on the epoxy asphalt conducted extensive research, Hokkaido University, civil engineering disciplines, study on the preparation of epoxy asphalt, modulus, and stress relaxation properties, destroyed properties were studied.
Asphalt during use, due to a variety of factors, there will be loose, water-stable and frozen stability and a series of durability problems worse.
As the epoxy asphalt cement high degree of integrity of the asphalt mixture is fully guaranteed, can effectively promote the mixture against the adverse effects of environmental factors, has shown good durability characteristics.
Mechanical and performance-related properties of asphalt mixes containing expanded clay aggregate.

Previous studies determined the ranges of two angles mainly depending on the effect of broken rock rather than its mechanical strength to examine the issue.
Based on the strength factors, the paper uses finite element program ANSYS to optimize the fore-angle and the lateral-rotation angle of PDC cutters.
The theoretical research, especially the optimization of two geometry parameters on strength affect literature, is rarely reported.
Optimization analysis After defining element type, material properties, meshing element, applying load, and performing the finite element calculation, ANSYS assigned the result to the corresponding parameters.
Mechanical structure optimization design [M].

And the forming process involves energy parameters, material properties and forming parameters, so the analytical model is reliable due to many assumptions to simplify the model.
The thermal physical properties of AISI 5150H steel are given in Table 1.
So parameters influencing on heated affect and parameters related to production time are investigated respectively by using the simplified model.
During this forming, two main factors contribute to the imprecision of workpieces: elastic springback and unwanted deformation in areas surrounding the tool contact area, as a result of excessive stress levels.
Table 2 Parameter ranges used in the numerical simulation Forming parameter Min Max Rotational speed/n[r/min] 800 100 Feed rate/f[mm/r] 2 0.5 Laser power/P[kw] 3 1 Spot diameter/d[mm] 10 5 Summary A three numerical mold has been developed which includes coupled transient thermo-mechanical analysis accounting for the temperature dependency of the thermal and mechanical properties of material.

In this acid treatment reaction, the effects of acid/fiber ratio (ml/g) on physical properties of obtained cellulose nanofibers were investigated.
Cellulose nanofibers can be obtained by mechanical and chemical paths.
The overall efficiency of the acid hydrolysis treatment and physical properties of obtained cellulose nanofibers are affected by several factors such as acid type, acid concentration, hydrolysis temperature, hydrolysis time, and acid/fiber ratio.
The main objective is to produce cellulose nanofibers from cassava pulp via acid hydrolysis method as well as study on the effects of acid/fiber ratio on physical properties of obtained cellulose nanofibers.
All reactions were carried out at 60 oC under mechanical stirring.