Abstract Self-reinforced lithium disilicate (Li 2 Si O 5 , LD) glass-ceramics were hot pressing sintered by introducing wt% Li crystal seeds into two different glass compositions of SiO -Li O-P -ZrO -Al 3 -K O-La (7C and O-K (4C LD). The results show that the play an important role in crystallization inducement, microstructural property improvement glass, especially for powder without nucleatin...

Calcium phosphate cements (CPC) are well-established materials for the repair of bone defects with excellent biocompatibility and bioactivity. However, brittleness and low flexural/tensile strength so far restrict their application to non-load bearing areas. Reinforcement of CPC with fibers can substantially improve its strength and toughness and has been one major strategy to overcome the pres...

The co-cyclotrimerization of two tricyanate ester monomers, Primaset PT-30 and 1,2,3-tris(4-cyanato)propane (FlexCy) in equal parts by weight with Primaset LECy, a liquid dicyanate ester, was investigated for the purpose of exploring synergistic performance benefits. The monomer mixtures formed stable, homogeneous blends that remained in the supercooled liquid state for long periods at room tem...

Hybrid composites made of natural and synthetic fibers are stronger, lighter, cheaper, biodegradable, greener than conventional metals, they replacing metals. The primary objective the study was to examine mechanical properties interwoven hybrid composite laminates. Kevlar glass fiber used as reinforcement for this work. woven together using various weaving techniques. 1 × 1, 3 3, 5 patterns co...

This paper focuses on thermal and mechanical properties of a hardened cement paste reinforced with Posidonia-Oceanica fibers. Fibers volume fractions are varied from 0% to 20%. Thermophysical measured. Simplified models developed predict conductivity, tensile compressive stresses fracture toughness variation as function fibers fraction geometrical characteristics samples. Results showed that th...

Abstract M42 high-speed steel (W 2 Mo 9 Cr 4 VCo 8 ) is a kind of high cobalt super-hard (HSS), which extensively used in various cutting tool materials, but because the price cobalt, HSS does not bring good economic benefits. In this thesis, consequences contents (0.0%, 2.0%, 4.0%, 6.0%, 8.0%) on organization and mechanical properties have been studied. The microstructure was analyzed by OM, S...

PURPOSE This study was designed to assess the mechanical properties of two calcium carbonate tempers, limestone and burnt shell. These tempers have been previously compared, in separate studies, to silicate-based grit or sand temper and, relative to the latter, are assumed to possess similar mechanical properties. However, their simultaneous use at the Morrison Village site begs the question: d...

Mechanical and ablation properties of the 2D C/C-ZrB2-ZrC-SiC composites with a fiber volume fraction of 17.6%, fabricated by infiltration and co-pyrolysis of blended polymeric precursors, were studied in this Part II. Flexural strength and fracture toughness of the composites were found to be influenced strongly by the thickness of the deposited pyrolytic carbon interphase, a composite with th...

We argue that basic psychological needs theory (BPNT) offers impetus to the value of mental toughness as a mechanism for optimizing human functioning. We hypothesized that psychological needs satisfaction (thwarting) would be associated with higher (lower) levels of mental toughness, positive affect, and performance and lower (higher) levels of negative affect. We also expected that mental toug...

Fiber reinforced mortars (FRM) are growingly used in several fields of building technology (e.g., façade panels, roofing, raised floors and masonry structures) as elements. One the promising type fiber for these composite materials can be textile waste originated from cloth wastes. The use this sort recycled wastes cement reinforcement within sector play a relevant role sustainability, both env...