mo40 low-alloy steels are mostly used to produce industrial components such as crane wheels whichare exposed to abrasive wear. however, during working conditions, their wear resistance is reduced aftera while due to its low hardness. with increasing abrasive wear, the dimensions of components decreaseand they need to be repaired for surface modification. in this regard, hard overlay coatings ar...

recent studies demonstrate that aluminide coatings are beneficial to wear and erosion resistance and also that oxygen-active elements such as yttrium can remarkably improve this resistance. in this research, the micro-hardness of the aluminide coatings with and without yttrium on 1045 steel was investigated using a micro-mechanical probe. wear of the samples was measured using a pin-on-disk tri...

the technological principles of increasing physical and mechanical characteristics oxide nitride ceramics plates by surface treatment, combining various options abrasive action coating are revealed in this article. The author carried out analysis wear-resistant compositions for operating conditions provided information about their effect on strength distribution residual stresses layer.

There are some arguments between the use of hydroxyapatite and porous coating. Some studies have shown that there is no difference between these two coatings in total hip arthroplasty (THA), while several other studies have shown that hydroxyapatite has advantages over the porous one. We have collected the studies in Pubmed, MEDLINE, EMBASE, and the Cochrane library from the earliest possible y...

Boron carbide (B4C) has been studied under dry sliding conditions for use as a potential finite-life run-in coating. Such a coating has been found to polish its mating surface during dry sliding wear, thereby providing fatigue resistance to the coated part. Employing such run-in coatings requires a complete understanding of the changes that occur in the coating abrasiveness during the polishing...

In order to study the wear resistance and corrosion of a composite material with Fe316L substrate Co-Cr-WC coating, Co-Cr alloy coatings different mass fractions WC (hard tungsten carbide) were prepared on by laser cladding technology. The phase composition, microstructure element distribution analyzed X-ray diffraction (XRD), scanning electron microscopy (SEM) energy dispersive spectroscopy (E...

the aim of the present study was to investigate the effect of quenching and tempering temperatures on themicrostructure, mechanical properties and the wear characteristics of medium carbon-high chromium wear resistantsteel. in addition, the dominant wear mechanisms were studied. for this purpose, austenitizing and temperingtemperatures were selected in the ranges of 900- 1000 °c and 300- 500 °c...

In this research, a thin film of TiO2 was applied on AZ91D using the method of magnetic sputtering. Microstructure investigations were done using field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD). Wear resistance for the coating was investigated using the pin on the disk in the form of dry and in the Ringer's solution. After this test, the worn surface of the sampl...

in the past 30 years, electroless nickel (en) plating has grown to such proportions that these coatingsand their applications are now found underground, in outer space, and in a myriad of areas inbetween. moreover, in order to further improve the mechanical and tribological properties of thenickel-phosphorous (ni-p) coatings, ni-p/ptfe composite coatings can be obtained, which provideseven grea...