The present work investigates the compressive property of Al matrix composite foams at different temperatures between room temperature and 200 ◦C. Elevated temperature results in a decreased compressive strength and energy absorption capacity of as-received Al foams. Therefore, to maintain the compressive property, the Al2O3 ceramic coating was deposited on the Al struts of the foams by the pla...

OBJECTIVES The purpose of this in vitro study was the evaluation of the bond strength and its durability of two composite resins to zirconia ceramic after using different surface conditioning methods. METHODS Plexiglas tubes filled with composite resin were bonded to zirconia ceramic discs (Cercon) which were either in their original state as supplied by the manufacturer only cleaned in isopr...

A portable microwave interference scanning system has been demonstrated to detect damage in composite ceramic armor test specimens including engineered features in specially fabricated surrogates. The system has been optimized for detection of identified features in sample specimens. The system has been optimized for portability and field application flexibility, including miniaturization and w...

The effect of milling on the particle size and mechanical properties Tungsten Carbide - Cobalt composite were investigated. First, raw materials ratios by mechanical milling for 4 hours at 300 rpm were mixed. The powder in the optimum temperature 1350°C at a rate of temperature rise 50°C / min and shelf life of 4 minutes and the pressure MPa 30 were sintered in SPS. The results indicated nearly...

STATEMENT OF PROBLEM The fracture of implant-supported restorations, especially of the veneering layer, is a common problem in dentistry. Monolithic ceramic or resin restorations might help solve this problem. PURPOSE The purpose of this in vitro study was to obtain additional insight into the risk of fracture of implant-supported restorations. MATERIAL AND METHODS Identical crowns (n=10) o...

The nanocomposites containing nanosized microstructure have extensively motivated researchers to investigate the mechanical properties of such composites. Metal/ceramics nanocomposites, which are composed of low-melting-point metal and high-melting-point ceramics, can provide desirable mechanical properties including high specific stiffness, high plastic flow strength, creep resistance, good ox...

Chiral Ceramic Nanoparticles In article number 2206956, Hendrik Heinz, Nicholas A. Kotov, and co-workers describe how the chirality of V2O3 nanoparticles strongly changes when they intercalate Zn2+ ions, generating strong modulation f polarization rotation from ultraviolet to infrared range. High g-factors, synthetic simplicity, environmental robustness self-assembled composite films chiral pro...

Single crystal piezoelectric composite transducers including 75 MHz PC-MUT (piezoelectric composite micromachined ultrasound transducers), diced 10 MHz and 15 MHz 1-3 composite transducers were successfully demonstrated with broad bandwidth and high sensitivity. In this paper, the design, fabrication and characterization of composite transducers are reported. C-scan experiments for SiC ceramic ...

PURPOSE The purposes of this study were to evaluate the staining resistance of CAD/CAM resin-ceramics polished with different techniques and to determine the effectiveness of the polishing techniques on resin-ceramics, comparing it with that of a glazed glass-ceramic. MATERIALS AND METHODS Four different CAD/CAM ceramics (feldspathic ceramic: C-CEREC Blocs, (SIRONA) and three resin-ceramics: ...