Hot-pressed laminated composites consisting of ZrB&lt;sub&gt;2&lt;/sub&gt;&amp;ndash;SiC ceramic and Cf/ZrB&lt;sub&gt;2&lt;/sub&gt;&amp;ndash;SiC composites

Guo, Shuqi

doi:10.2109/jcersj2.15190

Cited by 4 publications

(2 citation statements)

References 24 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies have previously investigated the fracture behavior of ZrB 2 based laminate composites 36–41 . Zhou et al described ZrB 2 ‐SiC based laminates prepared by hot‐pressing with flexure strength of 960 MPa and fracture toughness of 8.8 MPa·m ½ , though exhibiting relatively low amounts of crack deflection 36 .…”

Section: Introductionmentioning

confidence: 99%

Zirconium diboride laminates for improved damage tolerance at elevated temperatures

Neuman

Wittmaier

Fahrenholtz

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The mechanical response was studied for dense laminates containing layers of ZrB2 (~145 µm) and graphite—10 vol% ZrB2 (~20 µm). Individual layers were formulated by mixing starting powders with thermoplastic polymers and pressing into sheets. Laminates were produced by stacking and warm pressing the sheets, debinding, and hot pressing at 2050°C, 32 MPa, in Ar. The laminates were fractured at temperatures up to 2000°C in Ar. Laminates exhibited room temperature flexure strength of 260 MPa, increasing to 300 MPa at 1600°C, and then decreasing to 160 MPa at 2000°C. Inelastic work of fracture was 0.6 kJ/m2 at room temperature, reached a maximum of 1.3 kJ/m2 at 1400°C, and reverted to linear elastic failure at 2000°C. During fracture, cracks were deflected at the interfaces between the strong ZrB2 layers and the relatively weak C‐ZrB2 layers, which led to an increased inelastic work of fracture by more than an order of magnitude compared to conventional ZrB2 ceramics. This study demonstrated that laminate architectures are a promising approach for improving the damage tolerance of ZrB2‐based ceramics at elevated temperatures.

show abstract

Section: Introductionmentioning

confidence: 99%

Zirconium diboride laminates for improved damage tolerance at elevated temperatures

Neuman

Wittmaier

Fahrenholtz

et al. 2021

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…due to its inherent brittleness and poor thermal shock resistance. Thus, a variety of reinforcements, such as particles [3], graphite flakes [4], whiskers [5], and fibers [6][7][8][9], have been adopted to toughen ZrB 2 ceramics via different toughening mechanisms. Carbon fiber has been widely researched as a toughening material for the ZrB 2 -based UHTCs due to its large aspect ratio and good high-temperature stability.…”

mentioning

confidence: 99%

Microstructural evolution and performance of carbon fiber-toughened ZrB2 ceramics with SiC or ZrSi2 additive

et al. 2018

View full text Add to dashboard Cite

ZrB 2 -SiC/ZrSi 2 ceramics containing 30 vol% carbon fiber (C f ) additive were fabricated by hot pressing at low temperature (1500 ℃) using submicron ZrB 2 powders, and their microstructural evolution and performance were investigated. The addition of SiC or ZrSi 2 significantly reduced the onset sintering temperature and enhanced the densification of ZrB 2 . ZrB 2 -ZrSi 2 -C f showed poor performance owing to the serious fiber degradation, while the fiber degradation was effectively inhibited in ZrB 2 -SiC-C f resulting in high fracture toughness, substantial fiber pull-out, and non-brittle fracture mode for such material. The critical thermal shock temperature difference of ZrB 2 -SiC-C f was up to 741 ℃, significantly higher than those of ZrB 2 -SiC/ZrSi 2 and ZrB 2 -ZrSi 2 -C f . Moreover, this composite displayed a good oxidation resistance at 1500 ℃ in air.

show abstract

Fabrication method and mechanical properties of biomimetic Cf/ZrB2-SiC ceramic composites with bouligand structures

Wan²,

Yang³

et al. 2023

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Hot-pressed laminated composites consisting of ZrB<sub>2</sub>–SiC ceramic and Cf/ZrB<sub>2</sub>–SiC composites

Cited by 4 publications

References 24 publications

Zirconium diboride laminates for improved damage tolerance at elevated temperatures

Zirconium diboride laminates for improved damage tolerance at elevated temperatures

Microstructural evolution and performance of carbon fiber-toughened ZrB2 ceramics with SiC or ZrSi2 additive

Fabrication method and mechanical properties of biomimetic Cf/ZrB2-SiC ceramic composites with bouligand structures

Contact Info

Product

Resources

About