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The aim of this work was to link the microstructure of six different types of mortars with their mechanical properties during early carbonation ages (7, 15 and 60 days).
For that, micro-compressive essays were performed on micro-samples of each mortar and their behaviour was related to the textural properties studied at the same time intervals.
In Table 1 it is possible to observe the mechanical properties (strength and elastic modulus) of each mortar type, as well as its evolution during the carbonation process.
Porosity changes during the curing process do not involve significant variations in the mechanical properties of mortars with calcite aggregate.
Conclusions This study confirms that the carbonation process affects positively the mechanical properties of mortars, by producing an increase of strength of these materials, always higher in the external zone which is the most carbonated one.

The phase characterization of samples were examined by D / max-RB X-ray diffractometer. 2.2.2 Material affects the adsorption properties of Sr2+, Co2+ and Cs+ The static method was used to study the adsorption performance of Sr2+, Co2+ and Cs+ in geopolymers.
The adsorption rate reduced with the increasing of the proliferation resistance, so that the surface properties of adsorbents and the proliferation resistance were the key factors affecting this.
Table 2 The calculated parameters of the first-order model for Sr2+, Co2+ and Cs+ adsorbed in sample Ion qe(calc) [mg·g-1] k [min-1] R2 qe (exp) [mg·g-1] Sr2+ 85.06 0.0757 0.9957 85.68 Co2+ 57.85 0.0581 0.9954 58.76 Cs+ 112.39 0.0857 0.9992 113.26 3.2 PH affects the adsorption properties of samples Set pH as the abscissa, while adsorption amount, q(mg·g-1), as the ordinate to draw curves as figure 2.
Its diffraction patterns presented strength decreases or disappears due to Al3+, Na+ and Mg2+ replaced by heavier Co2+, Sr2+ and Cs+ in zeolite and the increasing of electrostatic interaction with silica skeleton as well as the decreasing of x-ray synthetic wave amplitude, which resulted in the decreasing of crystal structure factors.
Mechanical curing was due to dense structure of curing body which blocked the proliferation and leaching of ions.

Hard coatings applied by the Physical Vapor Deposition method often provide very good mechanical properties, especially when applied to metal parts that are mentioned to withstand certain level of wear.
The model prepared in this way was modified using selected mechanical material properties to simulate not only the porosity of the material, but also the existence of a hard coating on the surface in the form of TiN on base material is in Fig 2.
This slope then also indicates the variance of the properties of the samples with respect to contact-fatigue resistance.
The steeper the curve, the smaller the variance of the sample properties is achieved and thus the more accurate the result.
It has been assumed that the factors that affect the resistance of the material to contact fatigue cannot be simply specified on the basic properties of the material, such as hardness or surface quality in terms of roughness.

With fast development of output, light-weighting and high performance of automobile, 17Cr2Ni2Mo steel, as an important vehicle-used gear steel, has to improve properties to fulfill the development.
The performance of 17Cr2Ni2Mo steel is affected by quenching process parameters.
Introduction With fast development of output, light-weighting and high performance of automobile, 17Cr2Ni2Mo steel, as an important vehicle-used gear steel, has to improve properties to fulfill the development.
According to the functional model of key factors, the effect of key factors and their interaction to response values are analyzed quantitatively.
In order to research the effect of austenitizing temperature and holding time on the quenching hardness and tensile strength of 17Cr2Ni2Mo steel, the central composite design of two factors and five levels is carried out by using the austenitizing temperature and holding time as the design factors.

On the other hand, environmental factors have an important influence on the operating behaviour of equipment, since they favour the induction of corrosion or erosion-corrosion phenomena due to the flow of fluid circulated through installations at high temperatures.
The final surface polish is made by either electro-polishing or mechanical polishing with polishing felt and alumina polishing solution or diamond paste.
The creep phenomenon is dictated by factors such as temperature medium, stresses, time exposure & material properties.
- Replica R4 is characterized by a structure formed of ferrite and totally globulated perlite, inter-intragranular precipitation with most of the affected limits
Cheruvu, Degradation of mechanical properties of Cr-Mo-V and 2.25Cr-1Mo steel components after long term service at elevated temperatures, Journal of Metallurgical Transactions A, 1988, Vol 20A, Jan. 87-97

We then selected some normalized parameters minimally affected by material properties and tip radius.
An indentation test is used to measure material properties [3,4].
Table 1 Material properties for FE analyses.
Fig. 5 Normalized hardness vs. residual stress for various material properties.
We found that hardness is strongly dependent of the magnitude and sign of residual stress and material properties, while prior indentation studies asserted that hardness is insignificantly affected by the residual stress.

This study presents a brand new concept in contrast to that of the conventional mechanical toy robots on the market.
In addition, counterbalance of the robot while walking is affected by the location of the center of gravity of the trunk and the distance between the feet.
It became clear that the stability of the walking robot was determined by many factors, and difficulties may arise if any of these factors is changed.
The material and properties of each component was specified and the crank rotation speed was set at 20rpm.
Fong: Mechanical Design of a Simple Bipedal Robot.

The Micro-Milling Machining of Pyrex Glass Using the Electrochemical Discharge Machining Process Lu Changjian1,a, Gu An1,b, Li Meng1,c and Yang shengyi1,d 1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nan Jing, China Email: alcj151595@163.com, bguan1316@126.com, c573218823@qq.com, d675607656@qq.com Keywords: ECDM; Micro-Milling; Pyrex glass Abstract.
The ECDM technology and micro-milling technology were combined, and a milling platform was designed, through the analysis of the affecting factors in the processing, the Pyrex glass was machined by using the electrochemical discharge micro-milling machining and the experiment results were discussed.
MEMS played an increasingly important role in the modern industry, the variety of mechanical and electrical products towards the fine direction. 
Glass, ceramic, silicon and so on, due to their excellent properties, they were increasingly used in MEMS. 
Fig. 3 Micro-milling system Through the analysis of various factors in ECDM, the following parameters combination was used: Machining voltage was DC 28V, the working solution was 5% concentration NaOH solution, a tungsten rod electrode of 250μm diameter was used as tool electrode, feed speed of level table was 10μm /s, and the workpiece was Pyrex glass.

Structure and Properties of Mg-Al-Ca Alloy after Severe Plastic Deformation S.V.
The possibility of increasing the strength of the alloy in the UFG condition by a factor of 1.5-2, combined with a reasonable level of ductility and enhanced functional properties was thus demonstrated.
ECAP of annealed Mg-Al-Ca with the formation of UFG structure was shown to lead to increased yield strength (by a factor of 2) and enhanced tensile ductility (by a factor of 3).
Magnesium-based alloys are light-weight structural materials and their strength properties are of great importance.
Mechanical properties (a-YS; b-EL) of Mg-0.49%Al-0.47%Ca alloy at Ttesting = 20 o C and 160 oC (shaded) after different treatments: 1 - annealing; 2 - quenching; 3 - annealing + ECAP at 300 o C; 4 - quenching + ECAP at 300 o C; 5 - extrusion + ECAP at 300 o C.

The tribological properties of the WC layer were also investigated. 1.
Hydroabrasive wear of turbines is a major problem in the hydropower industry [5], particularly affecting critical turbine components such as blades.
Hydroabrasive wear occurs through a complex process involving factors such as water velocity, concentration of solid particles in the water, particle hardness, and impact angle [6-9]. 2.
The addition of Co can lead to a very good adhesion of the WC particles and gives the deposited layer excellent mechanical properties.
Cobalt improves the adhesion and mechanical properties of the coating, ensuring long-lasting protection under hydroabrasive wear conditions.