To study the tribological performance of metal-on-metal hip joint resurfacings, the wear performance of three pairs of Co-Cr-Mo alloy samples (pins and plates) were tested in a multidirectional pin-on-plate wear machine. An 'as-cast', a single-heat-treated, and a double-heat-treated set of specimens were tested to 3 x 10(6) cycles. The two heat treatments resulted in partial and full solution o...

Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping – a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure, wear, and corrosion properties. Following L9 Orthogonal array of Taguchi method, the samples were solutionized at 1200°C for 30, 45, and 60min followed by water quenching. Aging treatment was done...

Metals and alloys are widely used as biomedical materials and are important in medicine and they cannot be replaced with ceramics or polymers at present mainly because of their high strength and toughness. Since safety is the most important property of biomaterials, corrosion-resistant materials such as stainless steel, Co–Cr–Mo alloy, commercially pure titanium, and titanium alloys are employe...

The article studies the tribological properties of multicomponent nanostructured coatings Zr-ZrN-(Zr,Cr,Al)N and Zr-ZrN-(Zr,Mo,Al)N, as well wear resistance fracture behaviour cutting tools with mentioned during turning Inconel 718 alloy. Ti–TiN-(Ti,Cr,Al)N coating was also considered a reference coating. While is characterized by high hardness, it demonstrated coefficients friction (COF) at te...

This study compared the microstructures and mechanical properties of nickel–chromium–molybdenum (Ni–Cr–Mo) alloys prepared from a single alloy with an identical composition using two new digital processes (selective laser melting (SLM) soft metal milling (SMM)) conventional lost-wax casting (LWC). Disc specimens were used to via various analytical methods, while dumbbell-shaped subjected tensio...

The Co-Cr-Mo alloy is a biomaterial with very good corrosion resistance and wear resistance; thus, it widely applied for knee replacements. influenced by the amount of hcp phase morphology carbidic precipitates, which can both be altered heat treatment. This study compares conventional replacement manufactured investment casting material prepared progressive technology 3D printing. first set re...

The microstructures and mechanical properties of cobalt-chromium (Co-Cr) alloys produced by three CAD/CAM-based processing techniques were investigated in comparison with those produced by the traditional casting technique. Four groups of disc- (microstructures) or dumbbell- (mechanical properties) specimens made of Co-Cr alloys were prepared using casting (CS), milling (ML), selective laser me...

Ternary coatings Fe-Co-W with an iron content of 40-55 at.%, cobalt 39-44 at.%, and tungsten 4-12 at.% and Fe-Co-Mo with an iron content of 40-55 at.%, cobalt 39-44 at.%, and tungsten 4-12 at.% were obtained by galvanostatic and pulse electrolysis on the mild steel substrate from iron(III) citrate-based electrolyte. The influence of electrolysis mode and parameters on composition of deposited a...