Used nuclear fuel in the form of fuel assemblies or cartridges must be first stored in storage pools for several years after being removed from the reactor, then placed in a transport-storage package for medium-term storage, and then possibly in a permanent storage package. Th...

The present contribution explores the corrosion resistance of a composite copper-basalt laser clads. The substrate was a C45 steel sheet 20 mm in thickness. The filler materials were two mixtures of Oerlikon METCO 55 powder (high-purity copper) and basalt dust. These two constituents&#x...

For nuclear energy, fusion arc welding is one of the key technologies not only for production of equipment, but also for its maintenance, assembly and repair. Due to the fact that there is a radioactive medium inside the facility, the leakage of which could have catastrop...

The structure and properties of vacuum-arc multi-period composite coatings of the MeN/Cu system (where Me is Cr, Zr, and Nb) are studied. It was found that at the smallest nanolayer thickness (about 8…10 nm) of composites in the layers of all systems, only a phase wi...

This paper aimed to investigate the structure and physicochemical and tribological properties of ZnO coatings deposited by ALD on 316L stainless steel for biomedical applications. To obtain ZnO films, diethylzinc (DEZ) and water were used as ALD precursors. Zinc oxide layers were deposit...

Sintered carbide boriding is used either to form interlayers to increase the adhesion of deposited diamond layers to them by chemical vapor deposition (CVD) or to form layers on machine tools, which are then used without further processing in machining. To this end, it is ...

The paper deals with the influence of different types of WC-Co powder mixtures processed by SLM technology on the final properties of the prototype build.The powder mixtures used differed in the morphology of the powder particles, i.e. the shape, size and chemical composition of&#x...

Pulsed thermography is a common technique for nondestructive testing (NDT) of materials. This study presents the apparent effusivity method for the quantitative evaluation of coating thickness in a one-sided thermal NDT procedure. The proposed algorithm is based on determining a threshold va...

Effect of addition of cryogenic treatment to a standard heat treatment of aluminium alloy AW 7075 was tested in this work. Used heat treatment consisted of solution annealing at 470 °C for two hours and precipitation aging treatment at 130°C for 14 hours, 120 °C for ...

The aim of this study was to analyse how changing the processing parameters of WC-Co powder affects its properties. The powder mixture properties were evaluated by technological tests firstly and then the results were than compared with properties of SD251 stainless steel powder wh...

This article concerns distortion of a workpiece after induction-hardening under various conditions. It focuses particularly on the effects of quenching water temperature, PAG polymer concentration and the rotation speed of the workpiece during induction hardening. Electrical as well as non-electrical&...

Although heat treatment of high-speed steels has been covered in numerous treatises, their microstructure before treatment still receives insufficient attention. This article therefore explores the relationship between the initial microstructure and resultant properties in heat treated steels for cutting&#...

This contribution presents the findings from an experimental study which explored the possibility of processing WC-Co-based powders using selective laser melting (SLM) additive technology. Two commercially available WC-Co powder mixtures were studied. One is intended for thermally sprayed coatings and...

There are a large number of special methods for exploring the internal condition of materials on the basis of eddy currents. A major use of this method can be seen in surface engineering, particularly in studyiing some state quantities of surface integrity. It is also an&...

The paper describes the problem of high-speed steel forging. To achieve wear resistence and high reability of steel tools, a high degree of forging must be ensured. High-speed steel is one of the hard-to-formable materials with a narrow forging temperature interval. Exceeding the u...

This contribution is divided into two sections. The first one deals with identifying the cause of fracture in a ring, which fractured after weld surfacing. Optical and scanning electron microscopy and hardness testing were employed. Chemical composition was determined using the GDOES an...

The main goal of this paper is to present experiments exploring the effect of cryogenic treatment on the properties of cemented carbides. The experimental materials were chosen from three basic groups of cemented carbides with different binders and different WC grain sizes. One hal...

Highly polymorphic cobalt sulfide represents attractive material because of its unique electronic, optical, magnetic, mechanical and catalytic properties. Pulsed laser irradiation of a solid CoS2 target results in ablation and deposition of thin films on Ta and Cu substrate, which were analy...

Machinability is a technological characteristic expressing the aggregate influence of the physical, mechanical and chemical properties of the machined material on the course and on the economic or respectively, qualitative results of the cutting process. It can be evaluated as a qualitative,...