On the optical constants of alloys of the copper-zinc system

Lowery, H.; Wilkinson, H.T.; Smare, D.L.

doi:10.1088/0959-5309/49/4/304

Cited by 14 publications

(2 citation statements)

References 4 publications

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“…The optical properties of different electrodeposited Cu-Zn alloys have been studied for many years using several spectroscopic techniques such as polarimetry, 15 optical absorption, 16,17 modulation reflectance, 18 and spectral reflectivity, 19 In all these works, surfaces of samples were carefully polished before carrying out measurements. These results showed high reflectance (low absorption) for wavelengths longer than 600 nm and low reflectance for wavelengths in the 450-600 nm range.…”

Section: Resultsmentioning

confidence: 99%

“…Other changes also have been noticed in the spectra of brass samples. [15][16][17] For instance, Muldawer 19 pointed out that different characteristics in the reflectance spectra of R-brass (30% Zn) and several β-brasses (Cu, Ag, and Au-Zn) were noticed: for example (i) the position of the border, (ii) the slope of the border, (iii) the difference in reflectivity intensity on either side of the border, and (iv) the depth of the minimum. With the exception of samples obtained with 5 s immersion time, Figure 2 shows that all these characteristics change to a different extent depending on the current applied and immersion time during zinc flash treatment.…”

Section: Resultsmentioning

confidence: 99%

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Influence of the Conditions of Zincate on the Electroless Brass Plating of Steel

Domínguez-Ríos¹,

Gardea-Hernández²,

Torres-Sanchez³

et al. 2009

Ind. Eng. Chem. Res.

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In this work, we report that zinc flash film must be applied on a substrate of steel in order to activate the surface for electroless brass plating and the effect of this layer on the final properties of brass film. It was established that the color of the brass film is highly dependent on the conditions of the application of the zinc flash. We found that the mechanism of electroless brass deposition begins with the partial dissolution of the zinc flash film. It was also found that a brass coating with good adhesion properties is obtained when the conditions of the zinc flash bath are as follows: current density of 10 A/dm2, immersion time of 30−45 s, and bath temperature of 40 °C.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Influence of the Conditions of Zincate on the Electroless Brass Plating of Steel

Domínguez-Ríos¹,

Gardea-Hernández²,

Torres-Sanchez³

et al. 2009

Ind. Eng. Chem. Res.

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Legierungen des Kupfers mit Elementen der 2. Gruppe des Periodischen Systems

Dies

1967

Kupfer Und Kupferlegierungen in Der Technik

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Optical Constants of β-Phase NiAl

Rechtien

Kannewurf

Brittain

1967

Journal of Applied Physics

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The optical constants of nine compounds of NiAl ranging in composition from 45.2 at.% Ni to 61.6 at.% Ni have been determined between 0.212 and 1.80 μ. Measurements of the ratio of the reflectance of light polarized parallel to the plane of incidence to the reflectance of light polarized perpendicular to the plane of incidence were made at the following five angles of incidence: 55°, 60°, 65°, 70°, 75°. Data were analyzed by a computerized interation technique to provide values of the high-frequency dielectric constants and the electrical conductivity. Since the measurements were made on mechanically polished surfaces, two annealing experiments were performed to ascertain the effects of surface disturbance; the results showed that the optical properties were essentially unaffected by the annealing treatments. Plots of 2nk show absorption bands at ≈1.5 to 2, 2.5, 4.0, and 5.1 eV and what may be interpreted as free-electron behavior below 1.5 eV. The energy-band structure shows a strong compositional dependence which has been interpreted to be the result of contact between the Fermi surface and a Brillouin-zone boundary.

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On the optical constants of alloys of the copper-zinc system

Cited by 14 publications

References 4 publications

Influence of the Conditions of Zincate on the Electroless Brass Plating of Steel

Influence of the Conditions of Zincate on the Electroless Brass Plating of Steel

Legierungen des Kupfers mit Elementen der 2. Gruppe des Periodischen Systems

Optical Constants of β-Phase NiAl

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