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The resistance, mass transfer, erosion and arc properties of a new contact material named Ag/LaFe_1-xNi_xO₃ conductive ceramics were investigated. Ag/LaFe_1-xNi_xO₃ performed well under low voltage conditions in contrast with other contact materials such as Ag/CdO and Ag/SnO₂. After 5000 make-and-break operations, life test was made and the surface analysis method together with an arc voltage waveform was used to research the corrosion resisting and mass transfer properties. It was found that the conductive ceramics used in the contact materials could influence the resistance performance and, in turn, influence the mass transfer, erosion and arc characteristics.

This paper describes about selective deposition of material for pattern generation. The process is carried out using masking technique and by deposition of constituent material of powder metallurgical (P/M) green compact tool at selected area of aluminium work surface in Electro Discharge Machining (EDM) process. The process is carried out to generate line pattern with a hard layer of tungsten and copper at the selected area. Thus, it can improve surface integrity of aluminium substrate while maintaining its overall lightness. P/M tool, positive polarity of tool and hydrocarbon dielectric are used to achieve appreciable amount of material transfer from tool to work surface. The average deviation of material deposition from predefined boundary line is evaluated as edge roughness of the pattern. Taguchi Design of Experiment is used to perform Analysis of Variance (ANOVA) and Overall Evaluation Criteria (OEC) for its parametric study. The surface roughness is obtained in the range of 4.7–10.55$\mu$m and edge roughness in the range of 36.49–56.82$\mu$m in various working conditions. However, surface roughness of 4.00$\mu$m and edge roughness of 21.47$\mu$m are achieved at the optimum condition.

Atomic force microscopy (AFM) was originally developed for atomic resolution surface topography observations. Nowadays, it is also widely used for nanolithography. AFM-based lithography is an effective method compared to conventional photolithographic processes due to its simplicity, high resolution, and low cost. It can provide nanoscale stage control and the probing tip can be used as a lithographic tool. Therefore, various AFM-based nanoscale fabrication methods have been proposed using electrochemical oxidation, material transfer, mechanical lithography, and thermally induced modifications. This chapter will introduce the detailed processes and applications of AFM-based lithographic techniques.

Hot stamping of Aluminum alloys is a process receiving increased interest from the automotive industry. However, during this process, galling, which has been recognized as one of the major drawbacks, limits the tool life and restricts the complexity and quality of the product. In order to improve the feasibility of this forming technology, an understanding of the mechanism of galling is necessary. The aim of the present study is to investigate the galling behaviours between AA6082 and two advanced anti-wear coatings, CrN and AlCrN. The study was conducted with pin-on-disc experiments at an elevated temperature. The main focus of the study is on the quantitative measurement of galling and identifying the material transfer mechanisms between Aluminum and tool surface.