The Co−Ni (Cobalt-Nickel) system

Nishizawa, Tsutomu; Ishida, K.

doi:10.1007/bf02868090

Cited by 92 publications

(45 citation statements)

References 45 publications

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“…The lattice parameter change by the addition of Al and W in Co binary and Ni binary alloys is þ2:24 Â 10 À4 nm/at% (Co-Al), 18) þ1:94 Â 10 À4 nm/at% (Ni-Al), 19) þ3:52 Â 10 À4 nm/at% (Co-W) 18) and þ4:48 Â 10 À4 nm/at% (Ni-W), 19) which suggests that W more greatly affects the lattice parameter than Al. It has also been reported that the lattice parameter linearly decreases with increasing Ni content in Co-Ni alloy with the slope of À0:22 Â 10 À4 nm/at%, 20) obeying Vegard's law. Based on these previous data and the phase equilibria obtained in this study, it is considered that the decrease in the lattice parameters of the and 0 phases by the addition of Ni is Fig.…”

Section: Microstructure and Lattice Parametermentioning

confidence: 75%

Phase Equilibria and Microstructure on γ′ Phase in Co-Ni-Al-W System

et al. 2008

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Phase equilibria between the and 0 phases at 900 C in the Co-(10-70)Ni-Al-W system were determined by electron probe microanalysis (EPMA) and X-ray diffractometry (XRD). It was found that the 0 phase with L1 2 structure continuously exists from the Co side to the Ni side in Co-Ni-Al-W system and that it widens to the low W region with increasing Ni content. The partition of Al into the 0 phase increased with Ni content, while the W changed from a 0 former to a former by increase of Ni content. Differential scanning calorimetry (DSC) measurements also revealed that the 0 solvus temperature increases with Ni content, while the solidus temperature is hardly affected by such content. The lattice parameter of the and 0 phases and the mismatch decreased with increasing Ni content, which caused the morphologic change of the 0 precipitates from cubes to spheres.

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Section: Microstructure and Lattice Parametermentioning

confidence: 75%

Phase Equilibria and Microstructure on γ′ Phase in Co-Ni-Al-W System

et al. 2008

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“…Phase diagram of Co-Ni. [12] was used to produce electrodeposits of 20 μm thickness. Analytical grade chemicals and deionized water were used to prepare the solutions.…”

Section: Methodsmentioning

confidence: 99%

“…Binary Co-Ni alloys are selected as the experimental model material in this work for the reason that they exhibit a reversible fcc to hcp phase transformation when Ni content is less than 35at% Ni, as shown in the phase diagram ( Figure 1). [12][13][14][15] The phase transformation temperature decreases with increasing Ni content.…”

Section: Introductionmentioning

confidence: 99%

Strain-Induced Reverse Phase Transformation in Nanocrystalline Co-Ni Alloys

Jin

et al. 2014

Materials Research Letters

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A strain-induced reverse phase transformation from a hexagonal close-packed phase to a face-centered cubic phase was observed under tension at room temperature in electrodeposited nanocrystalline Co-Ni alloys with an average grain size of 15 nm. Such reverse phase transformation was previously observed only on heating. Investigation by transmission electron microscopy suggests a close relationship between the reverse phase transformation and grain growth during the tensile deformation.

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“…In the Ni-Nb binary system, there are three intermediate phases, Ni 8 Nb, Ni 6 Nb 7 , and Ni 3 Nb being determined in addition to two terminal solutions (Ni) and (Nb) [4]. Note here Ni 8 Nb is only stable from room temperature to 808 K. For Co-Nb binary system, there are three intermediate phases Co 3 Nb, Co 2 Nb, and Co 7 Nb 6 along with the terminal solutions (Nb) and (Co) [5]. All binary phases and their crystal structures are summarized and presented in Table 1.…”

Section: Introductionmentioning

confidence: 97%

“…Ni and Co can dissolve in each other infinitely [3]. In the Ni-Nb binary system, there are three intermediate phases, Ni 8 Nb, Ni 6 Nb 7 , and Ni 3 Nb being determined in addition to two terminal solutions (Ni) and (Nb) [4].…”

Section: Introductionmentioning

confidence: 99%