Mapping of the Nb–Ti–Si phase diagram using diffusion multiples

Zhao, Ji‐Cheng; Jackson, M. R.; Peluso, L. A.

doi:10.1016/j.msea.2003.08.008

Cited by 108 publications

(40 citation statements)

References 22 publications

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“…As imagens SEM foram obtidas no modo back-scattered electron (BSE), 5 Kv-15 Kv, 20 mA. As fases em cada liga foram identificadas nas imagens SEM/BSE por contraste considerando a massa molar e a quantidade de elétrons dos compostos e tendo por base também os resultados obtidos no trabalho experimental de Zhao et al [19]. [35].…”

Section: Materiais E Métodosunclassified

“…Ligas preparadas pela técnica de difusão tripla resultaram sete camadas de difusão (TiSi2, TiSi, Ti5Si4, Ti5Si3, Nb5Si3, NbSi2 e M3Si) e nenhum composto ternário e na seção isotérmica foram determinadas sete regiões trifásicas, Nb5Si3 + M3Si + (Nb, Ti, Si), Nb5Si3 + M3Si + Ti5Si3, Ti5Si3 + M3Si + (Nb, Ti, Si), Nb5Si3 + Ti5Si4 + Ti5Si3, Nb5Si3 + Ti5Si4 + TiSi, Nb5Si3 + TiSi + NbSi2, NbSi2 + TiSi2 + TiSi e NbSi2 + TiSi2 + SiSS. Zhao et al [19] determinaram experimentalmente as seções isotérmicas do sistema NbTiSi nas temperaturas de 1000 °C, 1150 °C e 1200 °C. Os compostos foram obtidos pelo método de difusão múltipla.…”

Section: Introductionunclassified

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Determinação Experimental Das Relações De Fases Do Sistema Nb-Ti-Si Na Seção Isotérmica a 1.200°C

Gigolotti¹,

Joubert²,

Coelho³

et al. 2018

ABM Proceedings

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ResumoForam estudadas experimentalmente as relações de fases do sistema NbTiSi na seção isotérmica a 1200 °C. Ligas fundidas em forno a arco em atmosfera de argônio a partir de Nb, Ti e Si de alta pureza (˃ 99,9 %), foram tratadas termicamente a 1200 °C durante 264 h em forno tubular, em atmosfera de argônio, encapsuladas em tubos de quartzo. As ligas tiveram sua microestrutura caracterizada por difração de raios-X, microscopia eletrônica no modo elétrons retroespalhados e por microsonda. EXPERIMENTAL DETERMINATION OF NBTISI SYSTEM PHASE RELATIONS IN 1,200°C ISOTHERMAL SECTION AbstractWe studied experimentally the phase relationship of the system NbTiSi in the isothermal section at 1200 °C. Alloys cast in arc furnace, under argon atmosphere, from Nb, Ti and Si of high purity (˃ 99.9%), were heat treated at 1200 °C for 264 h in a tubular furnace, under argon atmosphere, encapsulated in quartz pipes. The alloys had their microstructure characterized by X-ray diffractometry, scanning electron microscopy in backscattered electrons mode and electron beam microprobe analysis. Seven ternary regions were determined, Nb 5 Si 3 + (Nb, Ti) 3 Si + (Nb, Ti, Si), Nb 5 Si 3 + (Nb, Ti) 3 Si + Ti 5 Si 3 , Ti 5 Si 3 + (Nb, Ti) 3 Si + (Nb, Ti, Si), Nb 5 Si 3 + Ti 5 Si 4 + Ti 5 Si 3 , Nb 5 Si 3 + Ti 5 Si 4 + NbSi 2 , NbSi 2 + Ti 5 Si 4 + TiSi, NbSi 2 + TiSi 2 + TiSi e NbSi 2 + TiSi 2 + Si SS . There is good agreement of the results with the calculated and experimental proposals in the literature for this isothermal section of NbTiSi system. Small compositional changes are suggested for the location of the observed ternary fields.

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Section: Materiais E Métodosunclassified

Section: Introductionunclassified

Determinação Experimental Das Relações De Fases Do Sistema Nb-Ti-Si Na Seção Isotérmica a 1.200°C

Gigolotti¹,

Joubert²,

Coelho³

et al. 2018

ABM Proceedings

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“…Recently, the whole isothermal sections were studied by Zhao et al [16] and Xu et al [17]. The isothermal sections of this system at 1000, 1150 and 1200 C were reported using high-efficiency diffusion-multiple approach by Zhao et al [16].…”

Section: Experimental Information On Phase Equilibria In the Nb-si-timentioning

confidence: 99%

Thermodynamic assessment of the Nb–Si–Ti system

Geng

Bao

et al. 2009

Intermetallics

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“…The diffusion multiples (DM) method enables the study of phase diagrams, kinetics, and composition-structure properties of bulk solids. In contrast to the widely used diffusion couple method with the application range limited to binary systems, the DM method [37][38][39][40][41][42][43] allows to create composition gradients and IMC phases of three or more phases or alloys. This technique provides access to a number of compositions and compounds in parallel in a single experiment or sample specimen, allowing many properties to be studied systematically as a function of composition or phase structure.…”

Section: Introductionmentioning

confidence: 99%

“…[38,39] The DM method was first introduced by Zhao in 2001 and was employed primarily to map the phase diagram and other materials properties of the high melting point materials systems, i.e., AlNi-Ni, Co-Nb-Ni, Ni-Mo-Re, Nb-Ti-Si-Cr, Fe3Al-Cr-Mo-C, Cr-Pd-Pt-Rh-Ru, and Ni-based superalloys. [37][38][39][40][41][42][43] Technically the DM is an assembly of three or more different material blocks brought into intimate interfacial contact by a hot isostatic pressing (HIP) process. Typically this treatment is done at elevated temperatures to allow thermal interdiffusion, thus creating solid solution compositions and IMCs.…”

Section: Introductionmentioning

confidence: 99%

Intermetallic Layer Growth Kinetics in Sn‐Ag‐Cu System using Diffusion Multiple and Reflow Techniques

2014

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A diffusion multiple (DM) technique was applied to the Sn-Ag-Cu ternary system with the aim to determine the kinetics of formation of Cu-Sn intermetallic compounds (IMCs) and to predict properties of the interface in the solder joints. The formation and growth of the Cu-Sn intermetallics at the interface between the Cu as a base material and Sn-Ag-(Cu) solder was additionally studied during a standard reflow soldering process. Based on the experimental data, the kinetic rate constants and the respective activation energies of the Cu-Sn IMCs in the temperature range between 150 and 200°C were calculated and compared with experimental data from the literature. In this way, the mechanism of the pure solid-state reaction (DM technique) and liquid phase reaction (reflow soldering) were studied. The limitations of DM techniques for the prediction of the IMCs growth during reflow soldering process are discussed as well.

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Mapping of the Nb–Ti–Si phase diagram using diffusion multiples

Cited by 108 publications

References 22 publications

Determinação Experimental Das Relações De Fases Do Sistema Nb-Ti-Si Na Seção Isotérmica a 1.200°C

Determinação Experimental Das Relações De Fases Do Sistema Nb-Ti-Si Na Seção Isotérmica a 1.200°C

Thermodynamic assessment of the Nb–Si–Ti system

Intermetallic Layer Growth Kinetics in Sn‐Ag‐Cu System using Diffusion Multiple and Reflow Techniques

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