Development of Self-Toughening Silicon Nitride Matrix Nanocomposite Ceramic Tools and Cutting Performance

Huang, Chuan Zhen; Zou, Bin; Liu, Han Lian

doi:10.4028/www.scientific.net/KEM.375-376.128

Paper Titles

Analysis of the Axial Tensile Properties of Multidirectional Filament Wound Tubes
p.107

Dispersive Characteristics of Multi-Phase and Multi-Scale Nanocomposite Ceramic Powders
p.113

Research on the Stress Intensity Factor of the Crack Parallel to and Lying on the Interface of Cermet Cladding Parts
p.118

Study of the Thermal and Intrinsic Stress of Large Area Diamond Film Prepared by HFCVD
p.123

Development of Self-Toughening Silicon Nitride Matrix Nanocomposite Ceramic Tools and Cutting Performance
p.128

Research on the Advanced Ceramic Die Materials and Their Properties
p.133

Effect of Boron Concentration on Adhesion and Cutting Performance of Diamond-Coated Cemented Carbide Tools
p.138

Surface Properties of 3000°C High Melting Point Material by Powder Mixed EDM
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Experimental Study of Mechanical Properties of Electroformed Nanocrystalline Ni-Mn Alloys
p.148

Home Key Engineering Materials Advances in Machining & Manufacturing Technology...Development of Self-Toughening Silicon Nitride...

Development of Self-Toughening Silicon Nitride Matrix Nanocomposite Ceramic Tools and Cutting Performance

Abstract:

A series of self-toughening silicon nitride matrix nanocomposite ceramic tool materials are fabricated by hot-press technology at different sintering processes. And their microstructure has been observed and analyzed by a scanning electron microscope (SEM). Finally, the tests of mechanical properties and the cutting performance of the new ceramics are presented. The research results showed that the nanocomposite ceramic tool materials GGW20T5 and GGW20TC25 have better mechanical properties and possess a stronger wear resistance in cutting 40Cr alloy steel.

Info:

Periodical:

Key Engineering Materials (Volumes 375-376)

Main Theme:

Advances in Machining & Manufacturing Technology IX

Edited by:

Yingxue Yao, Xipeng Xu and Dunwen Zuo

Pages:

128-132

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.375-376.128

Citation:

C. Z. Huang et al., "Development of Self-Toughening Silicon Nitride Matrix Nanocomposite Ceramic Tools and Cutting Performance ", Key Engineering Materials, Vols. 375-376, pp. 128-132, 2008

Online since:

March 2008

Authors:

Chuan Zhen Huang, Bin Zou, Han Lian Liu

Keywords:

Ceramic Tool Material, Cutting Performance, Microstructure, Nano-Scale

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$38.00

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References

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827

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133

Preparation and Mechanical Properties of Al₂O₃/TiCN Sandwich Nanocomposite Ceramic Tool Materials

Authors: Y.Z. Li, Jun Zhao

Abstract: A model for designing sandwich nanocomposite ceramic tool materials with symmetrical distribution was presented. By adding nano-sized Al2O3 particles into the submicro-sized Al2O3 and TiCN, Al2O3/TiCN sandwich nanocomposite ceramic tool materials were fabricated by means of powder-laminating and hot-pressing technique. The experimental results showed that optimal mechanical properties were achieved for the composite with the addition of 35 vol.% TiCN particles in the middle layer and 45 vol.% TiCN particles in the outer layers, layer thickness ratio is 0.3, with the flexural strength reaching respectively 900MPa，fracture toughness and Vicker's hardness in the surface layers being 6.5MPa•m1/2 and 19.2GPa.

1126

Synthesis of Si-N-C Ceramic Composites by Pyrolysis of Polysilazane and Polycarbosilane

Authors: X.Y. Bao, Song Li, Xiao Xia Tang, Yue Zhang

Abstract: Non-oxide ceramics derived from organo-elemental precursors in the system Si-N-C has attracted much attention for its excellent properties. Typically, the Si-N-C ceramic shows homogeneous elemental distribution, better high-temperature stability and oxidation resistance which making them attractive for applying in various branches of technology. A novel amorphous ceramic is fabricated from precursors mixed by polysilazane (PSZ) and polycarbosilane (PCS). The Si-N-C ceramics (PSZ/PCS=2 (w/w)) are heat-treated between 1200°C and 1500°C in nitrogen to crystallization of microcrystalline α-Si3N4 and nanocrystalline SiC. The obtained Si-N-C ceramics are characterized by density, ceramic yield, porosity, X-ray diffraction and Scanning electron microscope to analyze the crystallization and microstructure. The experimental results indicate that the ratio of PSZ/PCS and the annealing temperature have a big influence on the crystallization behavior.

306

Solid Particle Erosion Behavior of NiCr-Al₂O₃-ZrO₂ (8Y) Ceramic Composites

Authors: Feng Jiao Liu, Ming Hao Fang, Yan Gai Liu, Zhao Hui Huang

Abstract: The erosion wear resistance of YSZ ceramics is worth studying because solid particle erosion is one of the main causes of destroying the materials and apparatuses. In this paper, 8YSZ ceramics reinforced by NiCr alloy and Al2O3 particles were pressureless sintered at an optimized sintering condition. The facture toughness reached a maximum value of 4.6 MPa•m ^1/2 when the addition of NiCr alloy is 12 vol.%, which was much higher than that of the pure 8YSZ ceramic (2.0 MPa•m ^1/2) fabricated in the same condition. Solid particle erosion wear behavior of NiCr-Al₂O₃-ZrO₂ (8Y) ceramics composites was performed by self-designed sand blasting type solid particle erosion wear equipment, using 36# SiC particles as abrasive particles with the 90o erosion angle. The effect of the volume addition of NiCr alloy on the erosion wear of NiCr-Al₂O₃-ZrO₂ (8Y) ceramic composites at room temperature was investigated. The results show that the volume erosion rate of the ceramic composites decreased as the volume addition of the NiCr alloy increasing. Crossing cracks, plastic deformation and minor chipping are the major erosion mechanisms.

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