Preparation and sintering of nano Fe coated Si3N4 composite powders

Yin, Rui; Fan, Jing; Liu, Xun

doi:10.1007/s11771-009-0031-5

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The theory of minimum energy and the minimum rate of energy dissipation have been applied to flow around bluff bodies, stability of falling bodies, statics and dynamics of gas bubbles, generation of ripples and dunes, and drag reduction by suspended load. These examples are used to illustrate how the minimization principles (variational principles) can be used to solve the problems of dissipative mechanical systems in static or dynamic equilibrium conditions [8,9,10,11]. In Ref.…”

Section: The Least Energy Consumption Principlementioning

confidence: 99%

Research of Masonry Shear Strength under Shear-Compression Action

Cai

Shi

Yang³

et al. 2014

AMR

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The failure criteria and calculating methods of static and seismic shear strength of masonry under combined shear-compression action have been researched in this paper. According to the least energy consumption principle and the failure criteria of orthogonal anisotropic materials, the correlated formulae of masonry under combined shear-compression action are established. The correlated formulae are in good agreement with experimental results. On this basis, the calculation formulae of the static and seismic shear strength are established. The calculation formulae uniformly use the axial compression ratio as main variable to express. By analyzing examples, it shows that calculations by formulae given in this paper are in accordance with values of "Code for design of masonry structures" (GB 50003-2011) and "Code for seismic design of buildings" (GB 50011-2010). The methods in this paper may provide important references to engineering design as well as code revision.

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Section: The Least Energy Consumption Principlementioning

confidence: 99%

Research of Masonry Shear Strength under Shear-Compression Action

Cai

Shi

Yang³

et al. 2014

AMR

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“…At present, the collaborative effect of metal Fe, Mo coated Si 3 N 4 and the generation Si 3 N 4 whisker on the mechanism of toughening has not been reported. Despond on our preliminary works [8] , we got the Fe-Mo/Si 3 N 4 composite powders by use the heterogeneous precipitation-thermal reduction synthesis, and the Fe-Mo/Si 3 N 4 composite powders sintered by normal pressing in N 2 atmosphere in different sintering temperatures. During preparation process of the powders, sintering densification, microstructure evolution, and strengthening mechanisms of Fe-Mo/Si 3 N 4 cermets have been investigated in different temperatures to provide a theoretical guidance to obtain the best sintering temperature of Fe-Mo/Si 3 N 4 cermets with high mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sintering Temperature on the Mechanism of Metal Composite and Self Toughing and Toughening Si<sub>3</sub>N<sub>4</sub> Ceramics Coupling

Yin

Hou

et al. 2012

AMR

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Fe-Mo/Si3N4 cermet powers are prepared by heterogeneous precipitation-thermal reduction process and sintered on normal pressure with Y2O3-MgO additives.The effect of sintering temperature on the phase composition, microstructure and mechanical properties are discussed. Result of study indicates: the rise of sintering temperature is beneficial to retention the metal phase and the generation of β-Si3N4 whisker. At the temperature of 1650°C, Y-Mg-Si-O-N glass phase is generated, At the temperature of 1700°C, whiskers-like β-Si3N4, good wettability phases on Si3N4 surface, and high toughness Fe phase appeared in Fe-Mo/Si3N4 cermets. It can effectively better the microstructures of Fe-Mo/Si3N4 cermets, and contribute to improve the material mechanical perperties. When the temperature rise to 1750°C, the maximum particle MoSi2 can destroy the microscopic structure, and decreases the density and mechanical properties of ceramics fast. The optimum sintering temperature is therefore about 1700°C.

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Lower fuel consumption model and air-flow segregation feeding system for sintering

Jiang

Huang

et al. 2011

J. Cent. South Univ. Technol.

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In order to utilize the spontaneous accumulation of heat (SAH) reasonably and obtain the high quality sinter with low energy consumption, a lower fuel consumption modeling based on raw materials of a certain steel works was built. An air-flow segregation feeding (ASF) experimental equipment was designed to simulate strand feeding process and calculate the lower fuel consumption quantity. Compared with baseline test, the ASF experimental equipment was adopted. The results of sinter pot tests show that the solid fuel consumption is lower than that in baseline test, which is decreased by 5.8%. Meanwhile, other sinter indexes, such as pan yeild, tumbler strength and strand productivity are improved. The mineralogical examination indicates that the mineral compositions and micostructures are improved in sinter.

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Preparation and sintering of nano Fe coated Si3N4 composite powders

Cited by 4 publications

References 15 publications

Research of Masonry Shear Strength under Shear-Compression Action

Research of Masonry Shear Strength under Shear-Compression Action

The Effect of Sintering Temperature on the Mechanism of Metal Composite and Self Toughing and Toughening Si<sub>3</sub>N<sub>4</sub> Ceramics Coupling

Lower fuel consumption model and air-flow segregation feeding system for sintering

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