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This paper presents an investigation on the correlation between surface topography and its mechanical properties measured by a novel multi-function tribological probe microscope (TPM) at the micro/nanometre level. Four surface functions of topography, friction, nano-hardness and Young's modulus are measured over a range of materials, on a point-by-point basis using the TPM. The capability of multi-function...
Mechanical alloying has been used to form nanocomposite in an Al–20wt%Sn alloy to promote its sliding wear performance, in particular the high load-carrying capability. X-ray diffraction and scanning electron microscopy characterization reveal that the nanocomposite is a structure of nanoscaled Sn particles distributed homogeneously in nanocrystalline Al matrix with typical size of the both smaller...
A numerical simulation has been used to systematically investigate the characteristics of a stylus surface profiling instrument. The model bridges together previously used concepts to incorporate both tip size and tip dynamics. The dynamics incorporate a tip flight phenomenon, inferring detachment from zero value of the reaction force and the trajectory from a free vibration solution to a second order...
Al–Sn bearing alloys with fine and homogeneous distribution of Sn dispersoids were prepared by sintering the mechanically alloyed Al–Sn powders. The microstructure evolution of the Al–20wt.%Sn alloy during sintering was examined by using X-ray diffraction, scanning electron microscopy. Two typical distributions of Sn phase can be obtained by controlling the sintering temperature. Microhardness indentation...
In this paper theoretical and experimental studies are carried out to investigate the intrinsic relationship between tool flank wear and operational conditions in metal cutting processes using carbide cutting inserts. A new flank wear rate model, which combines cutting mechanics simulation and an empirical model, is developed to predict tool flank wear land width. A set of tool wear cutting tests...
We present a novel designed multi-function tribological probe microscope (TPM), which has been developed to provide, within one set-up arrangement, measurements of topography, Young's modulus, hardness and friction of a surface. The measurement is based on a point-by-point scanning so values of the four measured functions are linked in space and in time. This enables us to determine whether a surface...
Toolmaking by Arc sprayed metal is a new field of Arc spraying application, a low cost, high efficiency method for producing molds for plastic products. Al- or Zn-based wires can only be used as spray materials at the present stage. In order to improve the anti-wear property of the Arc sprayed mold, the Ni layer is electron brush plated on the Arc sprayed coating to enhance the service life of the...
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