AbstractSputtered MoS2 coatings have been mostly used as a solid lubricant. In this investigation, MoSx/Ni composite coatings with Ni contents varying from 0 to 22 % were deposited onto steel substrate using a DC magnetron sputter process. The MoS2/Ni ratio in the coatings was controlled by sputtering the composite targets. The composition, microstructure, and mechanical properties of the...

Abstract Instrumented indentation test (IIT) is a depth-sensing hardness allowing nano- to macro-mechanical characterisation of surface mechanical properties. Indenter tip geometry calibration allows nano-scale characterisation, overcoming the limits conventional tests. Calibration critical ensure IIT traceability and applicability for quality verification in manufacturing processes. The accura...

The helium effects in Chinese developed CN-G01 beryllium are important issues for its use nuclear energy systems. In this work, the samples were irradiated with ions to fluences of 5.0 × 1016 ions/cm2 1.0 1018 at room temperature and investigated by techniques scanning electron microscopy (SEM), transmission (TEM) nano-indentation. It was found that irradiation induced hardening nano-hardness i...

Plasma nitriding is a plasma-activated thermochemical method widely used to increase the fatigue strength, hardness and wear resistance of low-alloy steels. In this work, new structure consisting hollow cathode metal plate can produce discharge heat workpiece by radiation. This principle perform source plasma (HCSPN). Herein, 42CrMo steels were treated conventional (CPN) HCSPN treatments. The n...

The first phase of this work aims to use the right additive nano-fillers choices, such as exfoliated Graphite (ExG), increasing mechanical, electrical, and thermal performances. In work, we are interested in quantifying effect particles' size on a polymer matrix's performance. For this, three sets polymers filled with Graphite, characterized by particle sizes, called meshes 50, 100, 150, were i...

in this study, physical vapor deposition (pvd) ti-cr-n coatings were deposited at two different temperatures100 and 400ºc on hardened and tempered tool steel substrates. the influence of the applied deposition temperature on the physical and mechanical properties of coatings such as roughness, thickness, phase composition, hardness and young’s modulus were evaluated. phase compositions were stu...

In this paper, a high sensitive area-variant type MEMS capacitive sensor was proposed for nano-indentation measurement. The bionic swallow structure processed mechanical sensitivity without influences from the load coupling effect. Six comb arrays were optimized and integrated into with novel sensing configuration eliminating electrostatic interferences resulting multiple combs maintaining comp...

We describe a recently developed method to measure mechanical properties of the surfaces of plant tissues using atomic force microscopy (AFM) micro/nano-indentations, for a JPK AFM. Specifically, in this protocol we measure the apparent Young's modulus of cell walls at subcellular resolutions across regions of up to 100 µmx100 µm in floral meristems, hypocotyls, and roots. This requires careful...

Hard coatings have been adopted in cutting and forming applications for nearly two decades. The major purpose of using hard coatings is to reduce the friction coefficient between contact surfaces, to increase strength, toughness and anti-wear performance of working tools and molds, and then to obtain a smooth work surface and an increase in service life of tools and molds. In this report, we de...