A moving pair with two-body contact is the ideal situation assumed in previous analyses. However, all pairs are a three-body state at start of operation or immediately after operation, such as bearings, ball-screws, gears and engines. This work studies influence wear particles (SUJ2), environmental (SiO2 Al2O3) nano-additives (CuO) on tribological characteristics under different particle concen...

The non-sulfided Ni-PTA/Al2O3 catalyst was developed to produce green diesel from the hydroprocessing of Jatropha oil. The Ni-PTA/Al2O3 catalyst was prepared by one-pot synthesis of Ni/Al2O3 with the co-precipitation method and then impregnanting Ni/Al2O3 with PTA solution. The catalysts were characterized with BET, SEM-EDX, TEM, XRD, XPS, TGA and NH3-TPD. The Ni and W species of the Ni-PTA/Al2...

Innovation in material science progresses the usage of Al2O3/SiC based nanocomposites gas turbine engine components, harp-shaped structure hypersonic rocket cutting tools for Ni, Al alloys, and clutch plate two-wheelers. Thermal stability is one significant properties materials. Future engines may have to operate at very high temperature that require thermally stable material. In this research,...

Novel nonlinear power-law flux models were utilized to model the heat transport phe-nomenon in nano-micropolar fluid over a flexible surface. The conservation laws (mass, momentum, energy, mass and angular momentum) KKL cor-relations for nanomaterial under novel solved numerically. Computed results used study shear-thinning shear-thickening nature of nano pol-ymer suspension by considering n-di...

The PtSn/Al2O3 is a prototypical industrial catalyst for propane dehydrogenation (PDH). However, the local structures of active sites are still inconclusive under operation conditions. Herein, evolutions Pt-Sn centers supported on nano-Al2O3 definitely discerned at atomic level during PDH reaction. By combining complementary in situ characterizations and theoretical calculations, we demonstrate...

Nb-B-Al-O nanocomposite films with different power of Al2O3 were successfully deposited on the Si substrate via multi-target magnetron co-sputtering method. The influences of Al2O3's content on structure and properties of obtained nanocomposite films through controlling Al2O3's power were investigated. Increasing the power of Al2O3 can influence the bombarding energy and cause the momentum tran...

Background: Tissue culture is a new approach for production of secondary metabolites with many advantages over conventional methods. Elicitors such as nano particles are molecules that can stimulate the production of secondary metabolites. Objective: This study was conducted to evaluate the effects of some nano particles on mucilage production in Linum usitatissimum under tissue culture condit...

ALD high-κ dielectrics and TiN metal-gate were successfully incorporated in both Si and Si0.7Ge0.3 surface-channel pMOSFETs. The high-κ gate dielectrics used included Al2O3 /HfAlOx /Al2O3, Al2O3 /HfO2 /Al2O3 and Al2O3. The Si transistors with Al2O3 /HfAlOx /Al2O3 showed a sub-threshold slope of 75 mV/dec. and a density of interface states of 3×10 cmeV. No obvious degradation of the Si channel h...

We have demonstrated a flexible resistive random access memory unit with trilayer structure by atomic layer deposition (ALD). The device unit is composed of Al2O3/HfO2/Al2O3-based functional stacks on TiN-coated Si substrate. The cross-sectional HRTEM image and XPS depth profile of Al2O3/HfO2/Al2O3 on TiN-coated Si confirm the existence of interfacial layers between trilayer structures of Al2O3...