The overall performance of the DLC film deposited at 100 ℃ is the best,with nano microhardness,surface roughness and frictional coefficient being is 22 GPa,0.75 nmand 0.110,respectively.

Besides enough mechanical strength, their materials must have high resistance to corrosion and wear, low frictional coefficient, because of the specific physical and chemical characteristics of water, which has high corrosion and low lubricating ability in contrast with mineral oil as working medium.

The results show that the frictional coefficient increases with the increase in the total amount of Sic and SiO2(amount of SiC is the equal of SiO2); the wear rate of the material decreases and then increases,and holds a minimum value.

According to the over\|stress behaviors, the trigged depth for viscous debris flows on stress face have been inferred and the quasi\|static frictional angle, normal force and dynamic frictional coefficient have been measured and have been calculated at the first. The calculated values of viscous debris flow surges are similar to the observational values,mean error -5\^43×10\+\{-3\}.

(2) Fe and SiO2 can increase frictional coefficient, but their mechanism are different in friction because of their different property,joint intensity with matrix and surface state.

When Fe content increase, Frictional coefficient and wear volume increase also, there are many micro-cracks on the oxide film, it can reduce the intensity of these films.

The tribological interface characteristics of cotton and ramee braided soft sealing packing in dynamic sealing of high pressure and high water-based fluid were analysed,and the effect of frictional load,surface roughness and velocity on its frictional coefficient was studied by Ring and Block Friction Tester.

The squeezing load is shown to be a decreasing function of the Weissenberg number, while the frictional coefficient is only weakly-dependent on the Weissenberg number.

Bounds on flow rate, frictional coefficient, centre of pressure and time-height relation are obtained and compared with classical case, Gross [1].

These characteristics as affected by various rolling conditions (e.g., thickness ratio and shear yield stress ratio of the raw clad sheet, roll speed ratio, reduction, frictional coefficient, roll radius ratio, etc.) were analyzed systematically.

The similar surface conditions after a relative longer shear-sliding distance on polished surfaces lead to the same steady state frictional coefficient, 0.61, for both finishing surfaces.

In comparison with the untreated SiC nanoparticles, the grafted SiC nanoparticles led to more significant reduction in frictional coefficient and wear rate of epoxy.

If there are roller supports in an overhead pipeline, the frictional coefficients of displacements in axial and lateral directions between pipeline and support are different. Thus the frictional contact between pipeline and roller support is orthotropic during pipe expansion. This paper gives a new method for solving this frictional contact problem, discusses the Finite Element Iteration Method applied to numerical structural analysis of overhead piping systems with roller supports, and gives...

If there are roller supports in an overhead pipeline, the frictional coefficients of displacements in axial and lateral directions between pipeline and support are different. Thus the frictional contact between pipeline and roller support is orthotropic during pipe expansion. This paper gives a new method for solving this frictional contact problem, discusses the Finite Element Iteration Method applied to numerical structural analysis of overhead piping systems with roller supports, and gives a practical example. Calculation result shows that friction is the key factor affecting the movement of pipeline.

The producing processes of Fe-Cu based powder metallurgy frictional material used for heavy-load machinery braking were presented. The matrix of the frictional material, the effect of the frictional components and the functional mechanism of Mo2O3 added were also investigated. The results show that the frictional coefficient increases with the increase in the total amount of Sic and SiO2(amount of SiC is the equal of SiO2);the wear rate of the material decreases and then increases,and holds a minimum value....

The producing processes of Fe-Cu based powder metallurgy frictional material used for heavy-load machinery braking were presented. The matrix of the frictional material, the effect of the frictional components and the functional mechanism of Mo2O3 added were also investigated. The results show that the frictional coefficient increases with the increase in the total amount of Sic and SiO2(amount of SiC is the equal of SiO2);the wear rate of the material decreases and then increases,and holds a minimum value. Mo2O3 added not only increases the fritional coefficient to some extent,but also decreases remarkably the wear rate of the material. A Fe-Cu based frictional material used for heavy-load machinery braking which has excellent frictional wear behaviour and low cost was developed.

Rheological behaviors of viscous debris flows were measured by using self designed large plat\|rotation rheometer lately. The over\|stress behaviors of viscous debris flows with gravel in Jiangjia Ravine were found,when sample were sheared at lowest shear rates. Beside it may correlated to the stress hysteresis include inside stress dilute in high\|viscous medium, and also it may correlated to crushed frictional force between gravel and fine particles in high\|concentration (or called resistance strength)....

Rheological behaviors of viscous debris flows were measured by using self designed large plat\|rotation rheometer lately. The over\|stress behaviors of viscous debris flows with gravel in Jiangjia Ravine were found,when sample were sheared at lowest shear rates. Beside it may correlated to the stress hysteresis include inside stress dilute in high\|viscous medium, and also it may correlated to crushed frictional force between gravel and fine particles in high\|concentration (or called resistance strength). According to the over\|stress behaviors, the trigged depth for viscous debris flows on stress face have been inferred and the quasi\|static frictional angle, normal force and dynamic frictional coefficient have been measured and have been calculated at the first. The calculated values of viscous debris flow surges are similar to the observational values,mean error -5\^43×10\+\{-3\}. It will lay a foundation for modeling research of viscous debris flows further.