Fabrication strategy of complicated Al2O3-Si3N4 functionally graded materials by stereolithography 3D printing

Xing, Hongyu; Zou, Bin; Liu, Xiaoyan; Wang, Xinfeng; Huang, Chuanzhen; Hu, Yifan

doi:10.1016/j.jeurceramsoc.2020.05.022

Cited by 81 publications

(40 citation statements)

References 23 publications

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“…Over the last decade, additive manufacturing (AM) technology has attracted great attention and interest from the researchers and the industry due to its characteristics of near-net shaping and dieless forming. Hence, AM technology has been expected as an ideal method to fabricate parts with sophisticated shape [6][7][8][9]. With the rapid development of AM technology, more and more methods have sprung up, such as Selective Laser Sintering (SLS), Selective Laser Melting (SLM), Three-dimensional Printing (3DP), Direct Ink Writing (DIW), Digital Light Processing (DLP) and so on [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…In our previous research, we found that forming a SiO 2 layer on the surface of Si 3 N 4 ceramic via oxidation process can improve their photocuring ability by reducing the light absorption and refractive index of Si 3 N 4 powder [22]. Zou et al have successfully prepared complicated Si 3 N 4 parts by this oxidation approach [7]. Except for su cient photocuring ability, the ceramic slurry for obtaining high-quality Si 3 N 4 parts also requires high solid loading and low viscosity [23].…”

Section: Introductionmentioning

confidence: 99%

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Digital Light Processing 3D Printing of Surface-oxidized Si3N4 Coated by Silane Coupling Agent

Yang

Sun

Huang

et al. 2021

Preprint

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Due to high light absorption and high refractive index of silicon nitride (Si3N4) ceramic, it is difficult to prepare Si3N4 slurry with favourable curing ability, high solid loading and low viscosity at the same time, and thus the high quality Si3N4 parts are hard to fabricate via Digital Light Processing (DLP). In this paper, oxidation process was used to enhance the curing behavior of Si3N4 slurry, and then silane coupling agent (KH560) was used to improve the rheological properties of the oxidized Si3N4 slurry. The effect of Si3N4 slurry with oxidation and modification on its rheological behavior, light absorption, curing ability and stability have been systematically investigated. A Si3N4 slurry with abundant photocuring ability, high solid loading, low viscosity and reliable stability was fabricated by the oxidized (1h) and KH560 (1wt.%) modified Si3N4 powders, and the dense Si3N4 ceramic parts were produced by this slurry via DLP 3D printing. Subsequently, the influence of oxidation and modification on microstructure, mechanical properties and thermal conductivity have been investigated. Finally, the performances of the DLP 3D printed samples are close to the isostatic cool pressing (ICP) fabricated samples. Consequently, DLP has well potential to fabricate high-performance Si3N4 ceramics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Digital Light Processing 3D Printing of Surface-oxidized Si3N4 Coated by Silane Coupling Agent

Yang

Sun

Huang

et al. 2021

Preprint

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“…For the very thin structure, the vapor deposition of Su, Inaba, Karmakar and Das, Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol.15, No.5 (2021) physical and chemical (Hirai et al, 1991) is always used while for the considerable thick structure, the sintering method (Chung et al, 2006) is commonly followed. Recently with the development of additive manufacturing, there are some studies about the fabrication of FGM through laser melting (Tan et al, 2019) and stereolithography (Xing et al, 2020) are reported. The applications of FGM in various industries were explicitly reported by (Saleh et.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical study of vibration and transient heat conduction in a functionally graded pipe

Inaba

Karmakar

et al. 2021

JAMDSM

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Functionally graded material (FGM) is an advanced class of composite material. In FGM, the volume fraction of each constituent can be tailor-made across the thickness for desired applications. In this paper, the analytical solution and numerical simulation of free vibration and transient heat conduction problem in a functionally graded pipe are considered. 3D elasticity theory is adopted for considering the thickness effect in the natural frequency derivation. For solving the transient heat conduction problem in FG pipe, the extended shifting variable method is used. A multi layer model is considered to numerically simulate the vibration and transient heat conduction behavior of FG pipe using standard finite element method package. Results obtained from both analytical solution and numerical simulations are compared for the free vibration and transient heat conduction. The 8-and 16-layer models show the higher accuracy for simulating FG pipe. For 16-layer model, the difference in natural frequency between numerical results and analytical solution is under 0.18%. The transient temperature distribution at specific position of the FG pipe is obtained from transient heat conduction study for various FG power law indices. The free vibration and transient temperature distribution of the FG pipe will help to tailor the FG pipe by adjusting the graded ways for specific application.

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“…So, they can be widely applied in the vital component of military equipment, navigation equipment, and other fields [4,5]. Due to the brittleness of silicon nitride ceramic material and the limitation of processing technology, the ceramic ball is prone to pits, cracks, scratches, and other defects during the preparation process, which seriously reduce the service life and reliability of silicon nitride ceramic bearing [6,7]. In order to ensure the safety and reliability of the device, it is very important to detect the surface defects of silicon nitride ceramic bearing balls.…”

Section: Introductionmentioning

confidence: 99%

Si3N4 Ceramic Ball Surface Defects’ Detection Based on SWT and Nonlinear Enhancement

Zhang

et al. 2021

Mathematical Problems in Engineering

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In order to improve the detection accuracy and efficiency of silicon nitride ceramic ball surface defects, a defect detection algorithm based on SWT and nonlinear enhancement is proposed. In view of the small surface defect area and low contrast of the silicon nitride ceramic ball, a machine vision-based nondestructive inspection system for surface images is constructed. Sobel operation is used to eliminate the nonuniform background, and the silicon nitride ceramic ball surface image is decomposed by SWT. And frequency-domain index low-pass filtering is used to modify the decomposition coefficients, and an adaptive nonlinear model is proposed to enhance defects; finally, the image is reconstructed and segmented by the stationary wavelet inverse transform and the dynamic threshold method, respectively. The enhanced algorithm can effectively identify surface defects and is superior to traditional defect detection algorithms.

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Fabrication strategy of complicated Al2O3-Si3N4 functionally graded materials by stereolithography 3D printing

Cited by 81 publications

References 23 publications

Digital Light Processing 3D Printing of Surface-oxidized Si3N4 Coated by Silane Coupling Agent

Digital Light Processing 3D Printing of Surface-oxidized Si3N4 Coated by Silane Coupling Agent

Analytical and numerical study of vibration and transient heat conduction in a functionally graded pipe

Si3N4 Ceramic Ball Surface Defects’ Detection Based on SWT and Nonlinear Enhancement

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