Phase formation and reaction kinetics in Co–Zn diffusion couples

Duchenko, O. V.; Vereshchaka, V. M.; Dybkov, V. I.

doi:10.1016/s0925-8388(99)00124-3

Cited by 19 publications

(5 citation statements)

References 4 publications

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“…Layer cracking appears to be a result of the difference in thermal expansion coefficients of these phases. The coefficient of thermal expansion of zinc is 30.0×10 -6 mm -1 ·K -1 , more than two times higher than that of nickel (13.4×10 -6 mm -1 ·K -1 ) [9,10] .…”

Section: Morphology and Characteristics Of Ni-zn Transition Zonementioning

confidence: 86%

Interfacial reaction between solid nickel and liquid zinc

Kong

2008

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Interfacial reactions between solid nickel and liquid zinc at 450-650 ℃ for 30-600 s were studied. The morphology and growth behavior of intermetallic compound layers at the interface between solid nickel and liquid zinc were observed and analyzed by SEM and EDS. The results show thatγand δ phases are formed at 450 ℃ at the Ni/Zn interface, and at 550 and 650 ℃ ℃ onlyγphase is formed at the interface and someδ phase particles will be participated during solidification on the surface ofγphase layer. Theβ 1 phase is absent under experimental conditions. Many cracks occur in the layers due to the difference in thermal expansion coefficients of these phases. It is found that the kinetics of the intermetallic compounds growth follows a parabolic law of time, as controlled by the diffusion mechanism. The apparent activation energies are 113.9 kJ/mol for the growth ofγphase and 125.87 kJ/mol forγ 1 phase, respectively.

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Section: Morphology and Characteristics Of Ni-zn Transition Zonementioning

confidence: 86%

Interfacial reaction between solid nickel and liquid zinc

Kong

2008

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…According to the literature [31-33] and EDS measured results to establish two interface element concentration distribution Equation (7). Finally, according to the literature [34-39] and B.E.Eyrakob's empirical formula [40] to deduce two interface reaction layer thickness Equation (10). The formulas used are as follows: …”

Section: Methodsmentioning

confidence: 99%

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Zhang

Chen

et al. 2023

Materials Science and Technology

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In this work, SS/ceramic composite material was produced by laser welding with active filler (AgCuTi). The presence of the AgCuTi filler was determined by ensuring that crack-free welds were obtained, and no brittle intermetallic compounds (IMCs) were observed. Unmelted SS was retained by laser offset to the SS side to achieve heat transfer to the filler. The AgCuTi filler was not melted but the eutectic reaction with low melting point still occurred by atomic diffusion. In accordance with the characteristics of laser brazing, a mathematical model for calculating the transient heat transfer of laser brazing was established via finite element method. The simulation results showed that the interface temperature could be directly controlled by controlling the welding power.

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“…Combining the equation of B.E. Eyrakob [41] and related references [42-47], the growth equation for the thickness of the intermetallic compound layer at both sides of the interface can be derived. The equations used in the paper are as follows: …”

Section: Experimental Methodsmentioning

confidence: 99%

Laser welding of ZrO₂ ceramic and 304 stainless steel with Ag–Cu–Ti filler

Guo

Zhang

Lü

et al. 2023

Materials Science and Technology

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In this paper, the joining of ZrO2 ceramic and 304 stainless steel (SS) was realised by laser offset welding with AgCuTi filler metal. The heat was transferred from the molten pool to the solder through the unmelted SS. AgCuTi would diffuse to form eutectic products with low melting point, forming metallurgical reaction zone. The unmelted SS was retained by laser migration to avoid the mixing of molten solder and molten pool, which reduced the content of brittle phase in the joint. In addition, the crack-free welded joint with a tensile strength of 71 MPa was obtained. The elemental diffusion model was used to simulate the interfacial microstructure changes, and the microstructure was reasonably predicted by changing the welding parameters.

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Phase formation and reaction kinetics in Co–Zn diffusion couples

Cited by 19 publications

References 4 publications

Interfacial reaction between solid nickel and liquid zinc

Interfacial reaction between solid nickel and liquid zinc

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Laser welding of ZrO₂ ceramic and 304 stainless steel with Ag–Cu–Ti filler

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Phase formation and reaction kinetics in Co–Zn diffusion couples

Cited by 19 publications

References 4 publications

Interfacial reaction between solid nickel and liquid zinc

Interfacial reaction between solid nickel and liquid zinc

A method for producing ceramic/stainless steel composites by laser welding with calculation optimisation

Laser welding of ZrO2 ceramic and 304 stainless steel with Ag–Cu–Ti filler

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Product

Resources

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Laser welding of ZrO₂ ceramic and 304 stainless steel with Ag–Cu–Ti filler