Search again:



Your search for coatings resulted in 16 matches...

CONVERSION COATINGS ON MAGNESIUM ALLOY DIE CASTINGS PART 1: THE EFFECT OF TECHNOLOGICAL PARAMETERS OF THE PRESSURE DIE CASTING PPROCESS ON THE QUALITY OF CASTINGS MADE FROM THE AZ91 ALLOY


The article presents the results of research on the selection of optimum technological parameters of the hot-chamber die casting machine operation to make castings in AM50 magnesium alloy, coated next with the deco...

more >>


SELECTED THERMO-PHYSICAL PROPERTIES OF ZIRCONIA POWDERS BASED ON RARE EARTH ELEMENTS SUCH AS RE2Zr2O7 (RE - Gd, La, Sm, Nd) FOR THERMAL SPRAY COATING OF BARRIER LAYERS


Paper presents results of investigations of selected thermophysical properties of ceramics powders RE2Zr2O7 (RE - Gd, La, Nd, Sm) type, used for thermal spray coatings. In compariso...

more >>


WEAR RESISTANCE AND BIOCOMPATIBILITY OF DENTAL TOOLS UPGRADED BY DIFFERENT COATINGS


Dental tools are sometimes damaged as a results of exploitation or during sterilization and desinfection. The aim of durability improving of dental borers and tweezers and increasing of the biocompatibility was mod...

more >>


APPLICATION OF DIAMOND LAYERS AND DIAMOND-LIKE COATINGS ON MEDICAL TOOLS AND IMPLANTS


The article is devoted to complex studies of diamond-like coatings applied by the PAPVD technique to improve the surface of medical tools and implants in terms of better anticorrosive behaviour and biocompatibility...

more >>


STRUCTURE FORMATION AND PROPERTIES OF Cr3C2 – NiCr CARBIDE COATINGS APPLIED BY PLASMA SPRAYING ONTO THE SURFACE OF DUCTILE IRON CASTINGS


The study presents the results of structure examinations and mechanical tests carried out on coatings based on Cr3Cr2-NiCr chromium carbide, applied onto the surface of ductile iron castings. The chromiu...

more >>


CONVERSION COATINGS ON MAGNESIUM ALLOY DIE CASTINGS PART II: DEVELOPMENT OF A TECHNOLOGY FOR FABRICATION OF DECORATIVE AND PROTECTIVE COATINGS ON MAGNESIUM ALLOY DIE CASTINGS


The article presents the results of investigations of a technology for fabrication of decorative and protective chromate coatings on die castings made from AZ91 (MgAl9Zn1) magnesium alloy. As a result of the investigat...

more >>


STUDY OF FILTRATION CHARACTERISTICS OF THE EXPERIMENTAL CERAMIC LAYERS


One of the main parameters determining proper course of the pattern evaporation process, which takes place in parallel with pouring of the foundry mould with metal, are properties of the ceramic coating applied on a po...

more >>


EFFECT OF SURFACE COATING AND FLUX TYPE ON THE SOLDERABILITY OF PCB BY LEAD-FREE SAC305 ALLOY


This paper presents the results of tests on the effect of the surface coating and flux type on the solderability of PCB by lead-free tin-based SAC305 (SnAg3.0Cu0.5) alloy determining the size of the contact angle by a wetting balance method. The s...

more >>


IONIC CONTAMINATION TESTS ON PRINTED CIRCUIT BOARDS


The paper presents the results of the effect of coating type on the amount of ionic contaminants present on printed circuit boards. The study was performed at the RT on the PCB with three types of coatings: HASL LF - lead-free, ENIG, OSP - organic...

more >>


Development of innovative method to procedure chemically active nano-coatings for moulds and cores


Tests were conducted to develop a new generation of functional nano-coatings used in the foundry industry. The research focused on the introduction of modern and innovative coatings based on nanoparticles of cast elements and active chemical compo...

more >>


The influence of the drop-size effect on the wetting kinetics in SAC305/Ni system


The studies of the drop-size effect on the wetting kinetics of the nickel substrate by lead-free solder were performed by the sessile drop method in a vacuum at a temperature of 260°C.In this work, Sn-based alloy SAC305 (Ag - 3.0 wt. %, ...

more >>


Effect of oxidation and mechanical damage of PCBs with OSP finish on their solderability with SAC305 alloy


The paper focuses on the experimental investigation of wetting behavior and solderability of commercial lead-free solder on Printed Circuit Board (PCB) covered with an OSP finish (Organic Surface Protectant) characterized by physical (mechanically...

more >>


Studies of protective coatings used for metal moulds


The die casting method is based on casting into permanent metal moulds, which makes it possible to obtain a large amount of casts with practically identical shapes. Compared to the technology of sand mould casting, this method has many advantages....

more >>


Impact of penetration depth of protective coating on thermal deformation of masses determined by the hot distortion parameter


Protective coatings are applied in order to obtain casts with an even surface, without faults. Protective coatings can contain a solvent based on water or alcohol; however, due to their harmfulness, it is recommended to limit the use of alcohol co...

more >>


Nanocomposite chromium coatings on aluminum alloys


Chromium coatings modified with nanodiamond particles were deposited on aluminum alloys. The concentration of the nanodiamond particles in the chrome plating electrolyte was from 5 to 25 g/l. The thickness of the layer varied between 30 and 70 &mu...

more >>


Electrolyte coatings of chromium with nanodiamonds on sintered steels


Sintered ferrous components were coated with electrochemical chromium coatings modified with nanodiamond particles. The nanodiamond particles were produced by detonation synthesis with an average grain size 8 nm. The objective of this study was to...

more >>