Sintering behavior, microstructure and mechanical properties of vacuum sintered SiC/spinel nanocomposite

Crack healing and strength recovery in SiC/spinel nanocomposite

“…In our previous studies [20] we showed that SiC can increase the strength of the single-phase spinel. Also in another study [21] we found that the surface cracks of SiC/spinel nanocomposite can be completely healed after sintering the specimens at 1545 1C for 1 min in air.…”

“…The SiC/spinel nanocomposite powder containing 10 wt% glycerol as a binder was uniaxially pressed at a pressure of 200 MPa in the form of disk with the height and diameter of 8 Â 12 mm 2 , respectively. The prepared disks were sintered at 1200 1C for 1 h in a vacuum with the heating/cooling rate of 10 1C/min [20]. These samples are called VS (referred to the vacuum sintered samples).…”

Synthesis of magnesium carbonate hydrate from natural talc

“…Talc is a 2:1 type layered silicate mineral and is abundant in China. Talc shows great physical and chemical properties, which allows us to use it in many fields (e.g., as a filler material, porous material, for the pharmaceutical use, in cosmetics or rubber industry, ceramic [12][13][14][15][16][17][18]). This material is also magnesium-rich and can be used as a raw material to prepare magnesium-based chemicals to not only reduce the production cost but also achieve high-value use of talc.…”

Processing of High‐Density Magnesia Spinel Electro‐Conducting Ceramic Composite and its Oxidation at 1400°C

“…Magnesium aluminate spinel (MgAl 2 O 4 ) is one of the most attractive refractories in the field of ceramics engineering. Its good refractoriness, high melting point of 2135°C, low thermal expansion, high thermal shock resistance, high chemical stability, and high strength even at high temperatures make it an ideal candidate for a wide range of applications . In addition to its applications in heavy industries, MgAl 2 O 4 is used as ultrafiltration membranes, electroinsulators, a catalyst and a catalyst supporter, and optical materials .…”

“…In a trial to prevent microcrack development in the spinel matrix, SiC/spinel nanocomposite is prepared from talc, aluminum, and graphite powders at 1200°C. The mean grain size, hardness, and cold crushing strength of the produced bulk SiC/spinel nanostructure were 34 nm, 1.6 GPa, and 118 MPa, respectively . The addition of 20‐wt.…”