Mechanical and thermal properties of a Hf2[Al(Si)]4C5 ceramic prepared by in situ reaction/hot-pressing

An in-situ, catalyst-free method for synthesizing 3C-SiC ceramic nanowires (SiCNWs) inside carbon–carbon (C/C) composites was successfully achieved. Obtained samples in different stages were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman scattering spectroscopy. Results demonstrated that the combination of sol-gel impregnation and carbothermal reduction was an efficient method for in-situ SiCNW synthesis, inside C/C composites. Thermal properties and mechanical behaviors—including out-of-plane and in-plane compressive strengths, as well as interlaminar shear strength (ILLS) of SiCNW modified C/C composites—were investigated. By introducing SiCNWs, the initial oxidation temperature of C/C was increased remarkably. Meanwhile, out-of-plane and in-plane compressive strengths, as well as interlaminar shear strength (ILLS) of C/C composites were increased by 249.3%, 109.2%, and 190.0%, respectively. This significant improvement resulted from simultaneous reinforcement between the fiber/matrix (F/M) and matrix/matrix (M/M) interfaces, based on analysis of the fracture mechanism.

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Microstructure, mechanical, and thermal properties of in situ-synthesized (ZrB2+SiC)/Zr2[Al(Si)]4C5 composites

Ceramics International ◽

10.1016/j.ceramint.2013.04.013 ◽

2013 ◽

Vol 39 (7) ◽

pp. 8559-8563 ◽

Cited By ~ 3

Author(s):

D.D. Guo ◽

J. Yang ◽

L. Yu ◽

L.M. Pan ◽

T. Qiu ◽

...

Keyword(s):

Thermal Properties ◽

Mechanical And Thermal Properties

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Mechanical Properties of SiC Short-Fibre-Reinforced SiC Composites Fabricated by Tape Casting and Hot-Pressing

Advanced Composites Letters ◽

10.1177/096369350501400303 ◽

2005 ◽

Vol 14 (3) ◽

pp. 096369350501400

Author(s):

Jae-Seol Lee ◽

Toyohiko Yano

Keyword(s):

Mechanical Properties ◽

Thermal Properties ◽

Hot Pressing ◽

Tape Casting ◽

Short Fibre ◽

Mechanical And Thermal Properties ◽

Sintering Additives ◽

Densification Temperature ◽

Short Fibres ◽

Sic Composites

In order to examine the effects of sintering additives on microstructure and mechanical properties of SiC short-fibre-reinforced SiC composites, a ZrO2-Y2O3-Al2O3 additive system was applied in this study. The aim of this study was to investigate the influence of the sintering additives on the mechanical properties of SiC/SiC composites using Tyranno SA short fibres. A ZrO2-Y2O3-Al2O3 mixture was chosen for fabrication of the short-fibre-reinforced SiC composites as sintering additives because of their relatively low densification temperature and non-reactivity with SiC. Compare with the previous results, the influence of sintering additives on the mechanical and thermal properties of the SiC/SiC composites was discussed.

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Preparation of Ti-TiB-TiC & Ti-TiB composites by in-situ reaction hot pressing

Materials Science and Engineering A ◽

10.1016/s0921-5093(01)01412-5 ◽

2002 ◽

Vol 325 (1-2) ◽

pp. 126-130 ◽

Cited By ~ 81

Author(s):

B.V. Radhakrishna Bhat ◽

J. Subramanyam ◽

V.V. Bhanu Prasad

Keyword(s):

Hot Pressing ◽

In Situ Reaction

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In-situ probing the electrical, mechanical, and thermal properties of individual carbon nanotubes and nanowires by using a TEM-SPM platform

Microscopy and Microanalysis ◽

10.1017/s1431927608081877 ◽

2008 ◽

Vol 14 (S2) ◽

pp. 398-399

Author(s):

J-Y Huang

Keyword(s):

Carbon Nanotubes ◽

Thermal Properties ◽

New Mexico ◽

Mechanical And Thermal Properties

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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Investigation on the modification to solvent-containing two-component polyurethane coating by carbon nanotubes

Pigment & Resin Technology ◽

10.1108/prt-03-2015-0032 ◽

2015 ◽

Vol 44 (5) ◽

pp. 300-305 ◽

Cited By ~ 4

Author(s):

X. Jiang ◽

L. Lin ◽

X. Bai ◽

S. Wang ◽

C. Wang

Keyword(s):

Carbon Nanotubes ◽

Thermal Properties ◽

Composite Coating ◽

Acid Treatment ◽

Mechanical And Thermal Properties ◽

Colour Properties ◽

Content Type ◽

Two Component ◽

Appearance Properties

Purpose – The purpose of this paper is to investigate the effects of carbon nanotubes (CNTs) on the mechanical, thermal and colour properties of solvent-containing two-component polyurethane (PU) coating. Design/methodology/approach – Fourier transform infrared spectroscopy and observation of dispersion stability were used to assess the effects of acid treatment on CNTs. The CNTs and PU composite coating was synthesised by in situ polymerisation and bending polymerisation, and the mechanical, thermal and colour appearance properties of coating were characterised. Findings – It was found that desirable modifications to CNTs occurred after acid treatment; thus, mainly carboxylic acid groups were introduced onto the surface of CNTs. And the acid-treated CNTs could improve the mechanical and thermal properties of PU coating, and the properties of composite coating was improved more successfully by in situ polymerisation than by blending polymerisation. Practical implications – The investigation established a method to synthesise CNTs and PU composite coating. The mechanical and thermal properties of PU coating could be improved by the inclusion of CNTs. Originality/value – This study established a method to synthesise CNTs and PU composite coating by in situ polymerisation and blending polymerisation; the effects of CNTs on modifying mechanical, thermal and colour properties of PU coating were investigated and compared in detail.

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