Silicon nitride: the engineering material of the future

Krstić, Zoran; Krstic, V. D.

doi:10.1007/s10853-011-5942-5

Cited by 139 publications

(52 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The BN addition in Si 3 N 4 matrix led to excellent mechanical and dielectric properties, thermal shock resistance, and machinability of the composite ceramics [1][2][3][4][5][6][7]. It has been found that the properties of BN/ Si 3 N 4 composite combined the favorable mechanical properties of Si 3 N 4 and dielectric properties, resistance to thermal shock, and machination of BN [2,4].…”

Section: Introductionmentioning

confidence: 99%

Effect of starting PMMA content on microstructure and properties of gel casting BN/Si3N4 ceramics with spherical-shaped pore structures

et al. 2013

View full text Add to dashboard Cite

By gel casting with polymethylmethacrylate microbeads (PMMA) as pore-forming agent, porous boron nitride/silicon nitride (BN/Si 3 N 4 ) composite ceramics were successfully prepared. The obtained ceramic shows bimodal hierarchical structures that composed of sphericalshaped micro pores depending on PMMA content and irregular sub-micro pores formed by the stacking of ceramic particles. Porosity of the porous BN/Si 3 N 4 ceramics can be well controlled from 53.0 to 60.6 % by the PMMA content from 10 to 40 wt%, as well as the mechanical and dielectric properties. Effect of PMMA content on phase composition and the relationship between microstructure and the basic properties of the porous BN/Si 3 N 4 ceramics was discussed in detail. Microstructure analysis reveals that the sub-micro pores acted as channels between micro pores. BN particles have a relatively denser distribution on the wall of spherical-shaped micro pores with a window between micro and sub-micro pores, and resulting in a halfclosed micro pore structure, which is meaningful for material design with concentration of BN particles on the wall of pore structure.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of starting PMMA content on microstructure and properties of gel casting BN/Si3N4 ceramics with spherical-shaped pore structures

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Dense silicon nitride (D-Si 3 N 4 ) ceramics are considered to be important structure materials applicable for various industry parts [1] for its superior high temperature strength, thermal shock resistance, low thermal expansion coefficient, good wear, and corrosion resistance [2][3][4]. The porous Si 3 N 4 (P-Si 3 N 4 ) ceramics are emphasized for some engineering applications such as catalyst supports and gas filters due to its high mechanical strength, low dielectric constant, low density, and porous nature [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Porous Si3N4/Dense Si3N4 Joints Bonded Using RE–Si–Al–O–N (RE = Y or Yb) Glasses

Ling

Sun

Liu

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The joining of porous Si 3 N 4 to dense Si 3 N 4 ceramics has been successfully performed using mixed RE 2 O 3 (RE = Y or Yb), Al 2 O 3 , SiO 2 , and α-Si 3 N 4 powders. The results suggested that the α-Si 3 N 4 powders partly transformed into β-SiAlON and partly dissolved into oxide glass to form oxynitride glass. Thus, composites of glass/β-SiAlON-ceramic formed in the seam of joints. Due to the capillary action of the porous Si 3 N 4 ceramic, the molten glass solder infiltrated into the porous Si 3 N 4 ceramic side during the joining process and formed the "infiltration zone" with a thickness of about 400 µm, which contributed to the heterogeneous distribution of the RE-Si-Al-O-N glasses in the porous Si 3 N 4 substrate. In-situ formation of β-SiAlON in the seam resulted in a high bonding strength. The maximum bending strength of 103 MPa and 88 MPa was reached for the porous Si 3 N 4 /dense Si 3 N 4 joints using Y-Si-Al-O-N and Yb-Si-Al-O-N glass solders, respectively.

show abstract

“…Silicon nitride-based products are widely used in various fields of technology [1] and [2], particularly, in assembly parts of jet engines, in fuel systems, braking systems elements. Silicon nitride-based porous ceramics is used in cooling systems, filter elements and as refractory materials.…”

Section: Introductionmentioning

confidence: 99%

NUMERICAL MODELING OF RESIDUAL THERMAL STRESS IN Si$_{3}$N$_{4}$ BASED HIGH-POROUS COMPOSITE CERAMICS

Rabinskiy¹

2016

Int. J. of Pure and Appl. Math.

View full text Add to dashboard Cite

Abstract:Modeling of residual thermal stresses arising in silicon nitride-based porous fibrous ceramic materials with reinforcing dispersed inclusions was carried out. Calculations were made within quasi-static linear thermoelasticity on the presumption that the initial state at which there are no internal stresses in the media is realized during synthesis of the material at temperature of 1450 • C. Modeling was carried out on three-dimensional representative fragments of fibrous structures generated using random algorithms with preset parameters of the materials' microstructure. Influence of the volume fraction and the size of the fillers in the form of spherical inclusions of silicon carbide on the residual thermal stresses realized within the structure of fibrous porous material is analyzed. It is demonstrated that the level of arising residual stresses can be comparable and, indeed, may exceed the fracture strength of considered porous materials.

show abstract

Silicon nitride: the engineering material of the future

Cited by 139 publications

References 75 publications

Effect of starting PMMA content on microstructure and properties of gel casting BN/Si3N4 ceramics with spherical-shaped pore structures

Effect of starting PMMA content on microstructure and properties of gel casting BN/Si3N4 ceramics with spherical-shaped pore structures

Microstructure and Properties of Porous Si3N4/Dense Si3N4 Joints Bonded Using RE–Si–Al–O–N (RE = Y or Yb) Glasses

NUMERICAL MODELING OF RESIDUAL THERMAL STRESS IN Si$_{3}$N$_{4}$ BASED HIGH-POROUS COMPOSITE CERAMICS

Contact Info

Product

Resources

About