We already reported that an intramolecular benzylation of the imino moiety of bidentate iminopyrrolyl ligands afforded an amido-pyrrolyl complexes 1 and they exhibited better catalytic activity for ethylene polymerization compared to the corresponding bis(iminopyrrolyl) dichloro complexes of zirconium. In this contribution, we prepared amido-pyrrolyl complexes of zirconium (3a-d) and hafnium (4...

Implants made of commercially pure titanium (cpTi) are widely and successfully used in dentistry. For certain indications, diameter-reduced Ti alloy implants with improved mechanical strength are highly desirable. The aim was to compare the osseointegration of titanium-zirconium (TiZr) and cpTi implants with a modified sandblasted and acid-etched (SLActive) surface and with a Ti6Al4V alloy that...

Hydroxyapatite (HA) is one of the most commonly used materials for the coating of bioceramic titanium (Ti) alloys. However, HA has poor mechanical properties and a low bonding strength. Accordingly, the present study replaces HA with a composite coating material consisting of fluorapatite (FA) and 20 wt % yttria (3 mol %) stabilized zirconia (ZrO₂, 3Y-TZP). The FA/ZrO₂ coatings are deposited on...

Wire + arc additive manufacturing is an welding process that uses non-consumable tungsten electrodes to produce the weld. The material used in this study a titanium, carbon, zirconium, and molybdenum alloy physically chemically stable has good performance for use as high-temperature heating element. In study, experiments are designed based on central composite design, single-layer wire performe...

Laser induced micro-nano texture formation on the surface of solid materials has become a research hotspot in field material modification. However, due to its extremely easy crystallization characteristics, study laser-induced modification bulk amorphous alloy lags behind. In this study, femtosecond laser was used induce one-dimensional LIPSS (Laser-induced periodic structures), SWPSS (Super-wa...

Abstract In this study, multilayered Cu/HA/ZnS + PEEK coatings were fabricated using hybrid technology on Zr–2.5Nb alloy substrates. The use of electrophoretic deposition (EPD) and heat treatment allowed the 1st base composite ZnS layer 2nd hydroxyapatite (HA) top to be obtained. EPD kinetics both layers was studied. Heating at a temperature 450 °C slow cooling resulted in densification sulfona...

IMPORTANCE Hyperkalemia is a common electrolyte abnormality that may be difficult to manage because of a lack of effective therapies. Sodium zirconium cyclosilicate is a nonabsorbed cation exchanger that selectively binds potassium in the intestine. OBJECTIVE To evaluate the efficacy and safety of zirconium cyclosilicate for 28 days in patients with hyperkalemia. DESIGN, SETTING, AND PARTIC...

OBJECTIVE The purpose of this study was to determine the fracture strength of zirconium implant abutments and the torque required to unfasten the retaining screw before and after applying cyclic loading to the implant-abutment assembly. The dynamic behavior and stress distribution pattern of zirconium abutments were also evaluated. METHODS AND MATERIALS Static and cyclic loading of 7 XiVE imp...

Magnesium alloy is the light weight material compared to aluminium alloy, and it possesses high strength; these alloys are used manufacturing of vehicle parts. has extreme mechanical thermal properties, applied aerospace applications. This study planned improve tribological corrosion resistance AZ61 magnesium with reinforcement boron carbide (B4C) zirconium dioxide (ZrO2). hybrid composites fab...