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ect of sic on microstructure phase evolution and

Current Location : Home > ect of sic on microstructure phase evolution and

  • Effect of sintering techniques on the microstructure of

    Jul 01 2016 · Phase composition and microstructures of SiC ceramics with Al 2 O 3 and Er 2 O 3 as sintering additives were compared which were prepared by pressureless liquid-phase sintering (PLPS) hot pressing sintering (HPS) and spark plasma sintering (SPS) respectively. Despite the different sintering temperatures and pressures all samples were almost fully densified and exhibited fine

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  • Manipulation of Phase and Microstructure at Nanoscale for

    Silicon carbide (SiC) is a compound with strong covalent bonding which gives its high mechanical strength and oxidation resistance but also hinders its synthesis under moderate conditions. Herein a facile route is presented for the synthesis of SiC nanomaterials from simple and abundant raw materials in an inorganic molten salt (MS). With this route we are able to synthesis nanoscale 3C

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  • Effect of SiC on Microstructure Phase Evolution and

    Ultra-high temperature ceramic composites have been widely investigated due to their improved sinterability and superior mechanical properties compared to monolithic ceramics. In

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  • Effect of SiC on Microstructure Phase Evolution and

    The microstructures of HECs containing SiC (x = 0.5 1.0 2.0 and 3.0) consist of three distinct phases—bright gray and dark (marked as 1 2 and 3 in the microstructure of HEC- (SiC)0.5 in Figure 3). Whereas the microstructure of HEC without addition of SiC (HEC- (SiC)0) show four different contrasts (marked as 1 to 4 in HEC- (SiC)0).

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  • Influence of SiC nanoparticles addition on the

    Feb 01 2017 · In order to analyze the distribution of the SiC nanoparticles and the phase constitution of black area analyzed by microstructure observation SEM test is carried out to investigate the AZ91 alloy and SiCp/AZ91 nanocomposites after different IMDF passes at 400 °C as shown in Fig. 4.

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  • Effect of High Temperature Heat Treatment on Phase

    The influence of high temperature heat treatment on the microstructural evolution and phase composition was investigated. The results showed that the oxygen was introduced during the mechanical alloying process leading to the oxidation of BN to form B 2 O 3.

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  • Effect of High Temperature Heat Treatment on Phase

    The influence of high temperature heat treatment on the microstructural evolution and phase composition was investigated. The results showed that the oxygen was introduced during the mechanical alloying process leading to the oxidation of BN to form B 2 O 3.

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  • Effect of TiB 2 on the Phase Composition Microstructure

    Mar 11 2021 · The effect of TiB 2 content on the phase microstructure and tribological properties of the synthesized AlCoCrFeNi/TiB 2 composites were investigated by XRD SEM and EPMA whereas also through friction and wear tests. The results show that phase transformation occurs with σ phase formation after sintering.

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  • High‐temperature phase and microstructure evolution of

    sic SiHfBCN ceramic resulted in nanocomposites with inter-esting phase compositions namely HfC/HfB 2/SiC in argon and HfN/Si 3N 4/SiBCN in nitrogen at 1700°C. The formation of such ceramic nanocomposites upon high-temperature an-nealing procedures of amorphous single-phase ceramics may be considered as thermodynamically driven process thus al-

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  • CiteSeerX — Effect of Microstructure of Particle

    CiteSeerXDocument Details (Isaac Councill Lee Giles Pradeep Teregowda) The e#ect of particle clustering on the e#ective response and damage evolution in particle reinforced Al/SiC composites is studied numerically and analytically. A probability of material failure is determined on the basis of the model of a composite as an array of subdomains and with the use of the probabilistic

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  • Microstructural evolution of SiC powder in molten silicon

    between a liquid phase and SiC because they could have some influences on the resulting properties. The microstructure transformations observed during the interaction between a liquid metal and a ceramic were especially discussed by W.E. Lee et al. 11 . It was thus

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  • The e ect of duration of stress relief heat treatments on

    The e ect of duration of stress relief heat treatments on microstructural evolution and mechanical properties in grade 91 and 92 power plant steels This item was submitted to Loughborough University s Institutional Repository by the/an author. Citation LI L. et al 2011. The e ect

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  • Microstructure Evolution and Reaction Mechanism of

    Dec 29 2004 · The evolution of the microstructure during reactive Si melt infiltration was assessed by infiltration experiments at various times and investigated by X‐ray diffraction as well as light scanning electron and transmission electron microscopy in combination with elemental analysis by energy‐dispersive X‐ray spectrometry.

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  • Microstructure and Properties Tailoring of Liquid Phase

    Evolution of microstructure in particular of the grain morphology occurring due to transformation-controlled grain growth was followed by SEM. The degree of β-SiC to α-SiC phase transformation was

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  • The e ect of duration of stress relief heat treatments on

    The e ect of duration of stress relief heat treatments on microstructural evolution and mechanical properties in grade 91 and 92 power plant steels This item was submitted to Loughborough University s Institutional Repository by the/an author. Citation LI L. et al 2011. The e ect

    Get Price
  • Journal of Physics D Applied Physics PAPER Related

    3.1. Microstructure evolution of Si-rich a-SiC H films obtained under different annealing conditions To demonstrate the microstructure evolution of Si QDs embedded in a-SiC H with increasing the annealing time XRD Raman and HRTEM measurements were used to investigate the samples. Figure 1 depicts the XRD spectra of

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  • The Microstructural Evolution Tensile Properties and

    The Microstructural Evolution Tensile Properties and Phase Hardness of a TiAl Alloy with a High Content of the Phase Ning Cui 1 2 In order to study the e ect of stabilizers on the phase in the microstructure is inhomogeneous. Coar se lamellar colonies and the unevenly distributed

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  • Microstructure and properties tailoring of liquid-phase

    The e ect of ples for SEM microstructural investigation were pre- the grade of the a-SiC used on microstructure formation pared by standard ceramographic procedure of and b-SiC to a-SiC phase transformation kinetics will be multistep grinding and polishing with subsequent discussed in detail further. chemical etching in Murakami s reagent (10 g

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  • Phase evolution and microstructure of high J c SiC doped

    Abstract. We report the phase evolution microstructure and critical current density (J c) of the SiC doped MgB 2 superconductors. In our study all samples were fabricated by hot pressing with a heating rate of 200 °C min-1.The results show that the reaction of 2Mg SiC = Mg 2 Si C can occur at about 500 °C about 50 °C lower than the formation temperature of MgB 2.

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  • Combined quantitative microscopy on the microstructure

    Combined quantitative microscopy on the microstructure and phase evolution in Li1.3Al0.3Ti1.7(PO4)3 ceramics Deniz Cihan GUNDUZa b c Roland SCHIERHOLZa Shicheng YUa Hermann TEMPELa Hans KUNGLa Rüdiger-A. EICHELa b c aForschungszentrum Jülich

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  • Effect of Solution Treatment on Microstructure and

    In order to characterize the effect of solution treatment on the properties of Selective laser melting (SLM) 316L material for nuclear power field the effects of different solution treatment conditions on the microstructure evolution and mechanical properties of 316L material were studied. The results show that 316L material is arc-shaped fish scale structure for as-deposited condition.

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  • Manipulation of Phase and Microstructure at Nanoscale for

    Silicon carbide (SiC) is a compound with strong covalent bonding which gives its high mechanical strength and oxidation resistance but also hinders its synthesis under moderate conditions. Herein a facile route is presented for the synthesis of SiC nanomaterials from simple and abundant raw materials in an inorganic molten salt (MS). With this route we are able to synthesis nanoscale 3C

    Get Price
  • Microstructure evolution and mechanical properties of TiAl

    Jul 01 2018 · Microstructure phase transformation mechanical properties and related mechanism were elaborately researched. For the microstructure of Ti29.8Al alloy the matrix consisted of fully α 2 /γ lamellar colonies the grain morphology changed from columnar to

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  • Effect of SiC p Addition on Microstructure and Mechanical

    Abstract The effects of SiC p addition on the microstructure and mechanical properties of ZTA ceramics was investigated by microwave sintering. Partially stabilized zirconia 3Y-ZrO 2 nanopowder containing SiC p was prepared by microwave pyrolysing precursor which was was achieved by co-precipitation method. The powders of alumina yttria partially stabilized zirconia containing SiC p

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  • Microstructure and thermal conductivity of hypereutectic

    The microstructure of the Al–50Si–0.5P alloy is shown in Fig. 1(b). The primary Si phase exhibits a blocky shape with an average length size of 37.5 ± 1.8 μm and an average width size of 25.0 ± 1.1 μm (aspect ratio of 1.5). In addition the distribution of primary Si phase in the Al matrix is uniform.

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  • Thermomechanical Modeling of Microstructure Evolution

    lled rubbers such as the Mullins e ect the permanent setting e ect and the the temperature change due to SIC and the evolution of heat sources whereas the work by Felder et al. (2019) 18 proposes a thermomechanically coupled the microstructure evolution

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  • Effect of Mo Concentration on the Microstructure Evolution

    In this study the effect of tempering conditions on microstructure grain size and carbide phase compositions of spray-formed high-speed steel after quenching at 1180 °C was studied.

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  • Phase evolution and microstructure of high J c SiC doped

    Abstract. We report the phase evolution microstructure and critical current density (J c) of the SiC doped MgB 2 superconductors. In our study all samples were fabricated by hot pressing with a heating rate of 200 °C min-1.The results show that the reaction of 2Mg SiC = Mg 2 Si C can occur at about 500 °C about 50 °C lower than the formation temperature of MgB 2.

    Get Price
  • Effect of SiC p Addition on Microstructure and Mechanical

    Abstract The effects of SiC p addition on the microstructure and mechanical properties of ZTA ceramics was investigated by microwave sintering. Partially stabilized zirconia 3Y-ZrO 2 nanopowder containing SiC p was prepared by microwave pyrolysing precursor which was was achieved by co-precipitation method. The powders of alumina yttria partially stabilized zirconia containing SiC p

    Get Price

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