A5051471877- Advanced ceramic materials synthesis
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Boron and Carbon Nanomaterials Research
- Metal and Thin Film Mechanics
- Advanced Surface Polishing Techniques
- Silicon Carbide Semiconductor Technologies
- Education Practices and Challenges
- MXene and MAX Phase Materials
- Bullying, Victimization, and Aggression
Rutgers, The State University of New Jersey
2017-2024
Hitit Üniversitesi
2020-2021
Abstract Boron carbide is a notable ceramic, with its high hardness and low density. However, it suffers sudden loss in strength under shear stress. Doping boron Si/B widely used to increase resistance amorphization. High purity silicon hexaboride precursor powders are for doping carbide, but these materials have costs supply chain constraints. This research investigated the effect of substituting lower B or using pure Si powder instead SiB 6 on materials’ properties such as elastic...
High dense (>99% density) SiC ceramics were produced with addition of C and B4C by spark plasma sintering method at 1950 °C under 50 MPa applied pressure for 5 min. To remove the oxygen from SiC, it was essential to add C. Two different mixture used, dry mixing (specktromill) wet (ball milling). The effect levels carbon additive on density, microstructure, elastic modulus, polytype Vickers hardness, fracture toughness examined. Precisely, 1.5 wt.% sufficient oxide layer improve properties...
In this research, composites were produced by mixing boron carbide (B4C) and silicon (SiC) with varying amounts of carbon (C) densifying them via spark plasma sintering at 1950 °C for 5 min. The effects different C contents on the properties observed. Density, elastic modulus, microstructure, Vickers hardness, fracture toughness evaluated. It has been observed that oxygen content starting powders should be matched added to obtain high density desirable mechanical properties. highest density,...
In this current paper, oxygen content of a fine particle size SiC (H. C. Starck UF 25 Silicon Carbide) and coarser (Saint Gobain were modified by using different concentrations HF for etching. Fully dense silicon carbide ceramics (>99% th. density) produced the spark plasma sintering technique at 1950 °C under an applied pressure 50 MPa 5 min hold with boron carbon addition. Archimedes method, scanning electron microscopy, ultrasound analysis used to examined density, microstructure, elastic...
Abstract Due to its outstanding properties, SiC is a candidate material for use in special applications such as armor. In order these applications, it necessary produce fully dense ceramics. The ability high density materials with superior performance depends on number of factors. One factors the addition carbon aid sintering. this study, effect different sources and ratios elastic mechanical properties was investigated. Two types (lamp black phenolic resin) were added (0%–2% wt.). All...
The effects of carbon sources and content on the density, microstructure, hardness elastic properties dense SiC ceramics were investigated. precursor powders prepared by adding 1.5-4.5wt.% C (carbon lamp black or phenolic resin) 0.5 wt.% B4C to sintered at 1900?C for 15min under 50MPa pressure in argon with an intermediate dwell 1400?C 30min. results showed that provided better mixing than resin since cluster was found samples made resin. Increasing causes decrease 4H polytype amount...
In this research, SiC ceramics were densified via spark plasma sintering (SPS) with 0.5wt.% B4C and 1.5wt.% C additions at temperatures ranging from 1900 to 2000?C for 5-65min under 10-50MPa applied pressure an intermediate dwell 1400?C, the effects of pressure, temperature, dwelling time examined. The samples sintered 50MPa had high density (>99%), showed elastic modulus (~420MPa). However, lower caused a decrease in properties. increase temperature 2000?C, while remained same, grains...