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After the identification of essential mechanical properties of the developed coatings, the main goal of the presented work is to identify the conditions responsible for the occurrence of wear and thermal damage in application-related tests.
By doping with vanadium, tungsten or titanium, the coating properties can be further improved, especially hardness and tribological properties at higher temperatures.
These two coating systems vary in layer composition and layer properties.
The coating properties are illustrated in Figure 2.
Mayrhofer: Composition, microstructure and mechanical properties of boron containing multilayer coatings for hot forming tools, Surface & Coatings Technology, vol. 205, pp. 24-28, 2011 [18] W.

Introduction 4H-silicon carbide (4H-SiC), a wide band-gap semiconductor with excellent material properties [1], is gaining increased industrial applications for high voltage and high current systems.
At present various kinds of epitaxial defects, such as dislocations, 3C inclusions, stacking faults and carrots, are still affecting the performance of the SiC devices [2].
The key factors contributing to the formation of LGPs include the following: 1) The quality of substrate (including the crystalline quality and the quality of chemical mechanical polish, CMP).
The key factors to reduce LGPs were as follows: 1) The quality of substrate (including the crystalline quality and the quality of CMP). 2) Growth rates (the effective C/Si ratio on the substrate under process running), when the growth rate reached 8μm/h, LGPs appeared in large numbers and increased exponentialy as the rasing of growth rate. 3) The relatively lower C/Si ratio is very favorable for the control of LGPs defects.

Thus, the choice of the materials is performed according to their properties.
Shrinkage factors for the Formulas 1 and 2 The numbers indicated in Figure 4, obtained for the paste slices shrinkages, are slightly higher for Formula 2.
Semi-industrial test The specimens were formed, and adequate control over the variables influencing each ceramic process step allowed obtaining parts with suitable, reproducible, properties.
A proper monitoring of the pastes properties during semi-industrial tests was performed.
These tests are: cantilever mechanical strength, breaking mechanical test, transverse electrical resistance and electromechanical test.

Water scarcity is the result of high demand compared to available supply and is caused by a number of factors.
Due to urbanization, industrialization and overpopulation, global warming is affecting the availability of water resources.
However, because of its exceptional mechanical and thermal properties, CNC is frequently used as a reinforcing reagent in polymer composites [13].
Furthermore, the mechanical characteristics of polysulfone were investigated in a number of studies, which revealed that it has high mechanical properties, high porosity, and is employed as a support layer owing to its unique mechanical properties [43-45].
R.: Effect of polymer concentration on the morphology and mechanical properties of asymmetric polysulfone (PSf) membrane.

Methods of Errors Analysis in Assembly of Dicing Saw in Silicon Devices with Material Properties and Applied Mechanics Yan MA Shenyang Academy of Instrumentation Science, Shenyang, 110043，China my9079cn@yahoo.com.cn Keywords: Dicing Saw, Measure Errors, Silicon Devices, Material Properties Abstract.Mainly introduce the work principle of Dicing Saw and the different kinds of errors in assembly ,analyze all errors which influence LCD glass ; draw the picture according to the measuring data ,from the picture estimate the errors how to come from and prove that the judgments is true through calculating the rigidity of liner bearing ;find the source of the main error ,appoint out how to take measures for the errors and what is the key point in the assemble.
The product has competing ability with the international similar products , the related equipment reputation and position in the world can be enhanced greatly, and the development of sensors, IC Material properties , etc LED industry can be promoted, and a considerable economic benefit and social benefit can be obtained.
Influence platform and spindle assembly parallel degree after are the major factors: rotary worktable, spindle frame parts, the components, the ball screw, rack, because they constitute a closed dimension chain.
Conclusions When bigger errors of the assembly appear, a reasonable measurement method of the material properties and the instrument should be set and the measurement record should be done, at the same time, some components are split for measurement, analysis of all data should be done through diagram, and the cause of the internal regular changes and the main reason should be found out, and specific measures for improvement would be made.
Practical grinding technology , Publishers, Beijing: mechanical industry press, (1996) [4] Y.Q.

Hot and wet conditions have been recognized as the major factors that affect the compressive strength of composites through a wide range of chemical and physical phenomena.
The effects of moisture and temperature on the reduction of the mechanical properties of composites were studied by many researchers.
In polymer composite, it is known that at high temperature and moisture concentration, it has a considerable degradation of the matrix that reduces the mechanical characteristic of the laminate and the strength failure of material.
Then, Pritchard and Speake have consisted in predicting the change in glass-fiber/polyester laminate properties by using water absorption results [2].
The comparison between the experimental result and prediction of the compressive strength with different environment conditions Environment conditions Experimental result (MPa) Predicted result (MPa) %Difference Microbuckling model Kinking model Combined model Microbuckling model Kinking model Combined model 25℃ dry 1526 1029 1162 1411 32.6 23.9 7.5 25℃ wet 1410 948 1112 1349 32.8 21.1 4.3 130℃ dry 1162 883 891 1140 24.0 23.3 1.9 Summary A fully analysis was developed based on microscopic observations and micro-mechanical model.

Therefore, it is necessary to study the compressive properties of GHPFRCC.
This procedure examines the relationship between variables by focusing on those interactions that are thought to affect the functional characteristics under study.
Conclusions In this study, the uniaxial compressive tests of GHPFRCC are conducted and such factors as water-binder ratio, sand-binder ratio, PVA fiber content, and fly ash replacement rate and water reducing agent content are considered.
Wu, Taguchi methods for robust design, American Society of Mechanical Engineers Press, U.
Xu, Uniaxial compressive properties of ultra high toughness cementitious composite, Journal of Wuhan University of Technology-Material. 26(2011) 762-769.

The effective mechanical properties of the chopped strand mat (CSM) reinforced composite cylinder were recorded from the experiment which has modulus of Elasticity 197.707 N/mm2, Poisson’s ratio of 0.22 and density of 1250 Kg/m3.
Table 1 shows the mechanical properties of the chopped strand mats.
The bulk properties determination requires tension, compression and shear tests [27].
For fiber-reinforced polymers like the ones used in this study, their properties are those achieved from tensile testing.
Table 2 presents the physical properties of chopped strand mat thin-walled composite cylinder.

Influence of alien wheel forgings quality factors are process selection and the rationality of the mould design [1].
The alien wheel quality demand is higher, using conventional mechanical machining forming cannot meet the requirements of the intensity, so want to be forged forming.
Die material brand AISI-H-13, surface hardness is set to HRC55, using Archard wear model predicted in forming process of mould, its expression amount of wear for: (1) Where: W is wear depth, P is in the mold on the surface of the positive pressure, v is sliding speed, a, b and c for standard constants, for steel speaking, a, b taking 1 , c taking 2, K is for material properties related constant 2e-5, H for mould initial hardness HRC=55.
(2) Where: m is shear friction factor, taking 0.3, k is shear yield strength.
Mould surface temperature increases there will make its surface hardness is declining, intensity decreased, thus affecting the service life of die, predicting mould surface temperature gradient in mould surface treatment will provide theoretical guidance.

The feasibility study on stability of the propellant GLQ by testing the content of the centralite in with gas chromatography test Gui-e Lu, Chenchen, Hao-nan Jia (ShiJiaZhuang Mechanical Engineering College, Shijiazhuang 050003, China) 594670862@qq.com Keywords: Propellant GLQ Gas chromatography Abstract: The content of stabilizer in gas chromatography to detect the stabilizer content in different aging time of the propellant GLQ, and the analysis of testing and statistical data of the measured experimental data.
Propellant physicochemical properties test of stabilizer measurement results can be used to evaluate the propellant storage stability basis.
Because of the increase of various performance parameters we consider σ with storage time, the detection value change will be more and more small, so fluctuation the range. 3.2 Statistical test data According to the statistics related knowledge, statistical test data with the F test, When H0 holds, the ratio : So in the test level of α, if F＞F1-α (p-1, n-p)[9]，reject the null hypothesis, that has a significant impact factors of A.
Or to accept the null hypothesis, that there was no significant factors affecting A.