Characterization of W–Cr Metal Matrix Composite Coatings Reinforced with WC Particles Produced on Low-Carbon Steel Using Laser Processing of Precoat

Abstract

The paper presents the study results of laser processing of precoat applied on C30 steel. The precoat consisted of powder mixtures with a binder in the form of water glass. Tungsten powder, chromium, and tungsten carbide (WC) were used to produce the precoat. The laser processing was carried out using a Yb:YAG disc laser with a rated power of 1 kW. Constant producing parameters (power of laser beam, 600 W; laser beam scanning rate, 400 mm/min) were applied. Chemical composition of the precoat was a variable parameter in coating production. A mixture consisting of 50% W and 50% Cr as a metal matrix was prepared. Subsequently, WC particles in weight ratios of 25%, 50%, and 75% were added to matrix. As a result, W–Cr metal matrix composite coatings reinforced with WC particles were formed. This study focused on investigation of microstructure, microhardness, phase, and chemical composition as well as corrosion and wear resistance, of the newly formed W–Cr/WC coatings. An instrumented nanoindentation test was also used in this study. As a result of laser beam action, the newly formed coatings had an interesting microstructure and good properties which were improved in comparison to substrate material. It is anticipated that the resulting coatings, depending on the treatment parameters (e.g., W–Cr/WC powder mixture) used, can be successfully applied to metal forming or foundry tools.

The Use of ZrO2 Waste for the Electrolytic Production of Composite Ni–P–ZrO2 Powder

“…The production of an electrode material with a highly developed, rough, or porous surface is possible by introducing composite components, alloying with other elements, or other modifications. Such operations are aimed at improving the properties of composite materials and increasing their catalytic activity [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. Carbides, polymers, silicides, nitrides, and oxides are several types of particles used to improve the mechanical, physicochemical or electrocatalytic properties of composites [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

An Analytical Analysis of the Hydrostatic Bending to Design a Wastewater Treatment Plant by a New Advanced Composite Material

“…The incorporation of these nanoparticles into steel alloys has demonstrated the capacity to enhance strength, ductility, and overall structural performance [41]. Increased tungsten particle content in tungsten-chromium metal matrix composite coatings increases wear resistance, according to Bartkowski et al [42]. Such attributes are paramount in environments where construction materials are subjected to substantial loads, pressures, and potentially corrosive elements.…”

EFFECT OF PRESSING PRESSURE ON MICROSTRUCTURE AND SELECTED STRENGTH PROPERTIES OF AlSi-CF COMPOSITE CASTINGS

“…Metal aluminum matrix composites (AlMMC) belong to a group of engineering materials with a wide range of mechanical and physical properties. These properties are designed by selecting the type of reinforcement (particles, fibers, nanotubes), its size and quantity, as well as the method of distribution in the matrix (local, gradient, volumetric) [1][2][3][4][5]. Taking into account the additive or synergistic nature of the interaction of the reinforcing phase with the matrix, it is possible to potentially optimize the set of material properties in terms of conditions and loads occurring during the operation of the composite product (cast).…”