Open Access Conference Proceedings

Abstract: This rеsеаrсh indiсаtеs thе possibility to rеplасе сommеrсiаl mаtеriаls аnd surfасing tесhniquеs by submеrgеd аrс wеlding undеr thе flux аnd powdеr of industriаl wаstе mаtеriаls to obtаin thе сhutе with high аbrаsivе wеаr rеsistаnсе but for а lowеr priсе. Industriаl wаstе of hаrd mеtаl insеrts, еmеry whееls, сhips of саsе hаrdеnеd stаinlеss stееls wеrе grindеd, grаnulаtеd аnd blеndеd. [..] Read more

Abstract: Metallic pigments have been developed because of their properties of covering and anti-corrosion protection. Aluminum is a great material to manufacture metallic pigment due to the lamellar format of particles. [..] Read more

Abstract: This article deals with the use of the FMEA method process in welding processes with the aim to eliminate the causes of defects in welded joints. Welded products and their welds require an improvement in quality, both visual and structural. [..] Read more

Abstract: Due to the reduction in production costs, not only in the automotive industry, more and more sandwich-structure parts are emerging to replace expensive, technologically complex elements such as cooling rotors in electrical installations. They are required to meet a complex set of attributes – resistance to abrasive wear, anti-corrosion requirements, and especially manufacturing costs.This article discusses and compares the mechanical properties of a critical part (cooling rotor) made as a sandwich structure of aluminum alloys and nickel-phosphorus (NiP) coatings.The specific mechanical and corrosive properties of the thin NiP film vary with the percentage of phosphorus and the heat treatment. [..] Read more

Abstract: Surface layers enriched with Al and Si were fabricated on an AZ91D substrate using thermochemical treatment in solid media. The AZ91D specimens were heated in an Al+Si powder mixture acting as a source of diffusion elements. [..] Read more

Abstract: Self-propelled rotary turning tools and actively driven rotary tools are characterized by different chip formation and different conditions of surface layer. Chips creating after conventional machining is influenced by specific patterns and can be affected by the machining scheme as well as the tool durability. [..] Read more

Abstract: The set of five bronze vessels from the Late Bronze Age was found near to the Lidice village in 2014. The copper (I) chloride - nantokite was identified in a mixture of corrosion products. [..] Read more

Abstract: This work is focused on development of a method for production of artificial copper patina pigment based on brochantite. A suitable titration method for this type was chosen to add sodium hydroxide solution to cupric sulphate solution. [..] Read more

Abstract: The steel structure segments with HDG coatings are subject of another processing before steel structure assembly and usage. The parameters of these processing’s may affect the adhesion of zinc layer - mainly the cutting edges and surface preparation as sweeping. [..] Read more

Abstract: From the moment of immersion, the reaction between molten zinc and solid iron starts forming intermetallic phases. This diffusion controlled process is responsible for the final phase composition of zinc coating. [..] Read more

Abstract: In recent years, the cerium-based conversion coatings have been increasingly used as one of the more promising chromate coatings substitutes on aluminum alloys, as cerium compound do not pose environmental problems and the coatings provide an efficient corrosion protection close to that of chromium. The cerium-based layer was prepared from simple immersion of aluminium alloy sheets in a solution composed of a 4 - 8 g·L-1 Ce(NO3)3·6H2O; 30 - 50 ml·L-1 H2O2 (37 %) and 0.5 - 1,5 g·L-1 tannin at room temperature. [..] Read more

Abstract: The article contains the experimental results of research on the use of vibratory machining with loose abrasive media. The aim of the study was to investigate the influence of vibratory machining time with ceramic media, on geometric surface structure changes, burrs removing and rounding effect. [..] Read more

Abstract: Galvanizing is an application of a zinc coating on the steel base material by electrolytic deposition. Zn coating protects anodically the base material (typically unalloyed or low-alloy steel) against corrosion. [..] Read more

Abstract: Process was developed for free-chromate passivation of zinc coatings. An optimal composition of the solution was developed. [..] Read more

Abstract: To date, a large number of different alloys based on CoCr, Ti, stainless steel, etc. are used in medicine. [..] Read more

Abstract: Rare earth elements are widely used in metallurgy for alloying. It is known that small admixtures of these elements give unique properties to alloys. [..] Read more

Abstract: This paper presents the results of investigation considering the morphology of surface layers produced by electro-spark deposition (ESD). It is a pulsed micro-welding process used for small scale and precision repair of high value worn or misfabricated components. [..] Read more

Abstract: Corrosion of reinforcing steel is one of the main reasons of reinforced concrete structures deterioration, which is caused primarily by chlorides. Electrochemical chloride extraction (ECE) and electrochemical injection of corrosion inhibitor (EICI) are promising techniques eliminating this adverse effect. [..] Read more

Abstract: The article describes a new method of applying titanium coatings on ceramic surfaces using special tools - rotating brushes with titanium fibers. The soldering of ceramic-metal joints involves the use of expensive active solder eliminating the lack of wettability of the ceramic. [..] Read more

Abstract: Since, it is very difficult to form Ni-P deposit by electroless process on austenitic stainless steel as substrate, the activation with a weak acid etch, i.e., nickel strike should be applied. In this work a new method for Ni-P depositing on austenitic stainless by electroless processing is developed. [..] Read more