Introduction

Shreir, L.L.

doi:10.1016/b978-0-408-00110-6.50003-x

Cited by 43 publications

(33 citation statements)

References 2 publications

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“…Titanium in salt water has a very low rate of film dissolution, and the film has been reported to be stable even at the boiling point of some solutions [6][7][8]. There is some disagreement on the effect of pH on film dissolution.…”

Section: Resultsmentioning

confidence: 99%

“…There is some disagreement on the effect of pH on film dissolution. Shreir [6] reported that complete breakdown does not occur even at very low values of pH, although Covington [9] stated that the oxide film on titanium is totally dissolved at pH values below 3. Regardless of the degree of oxide film disintegration, it is reasonable to assume that low pH values tend to promote the dissolution and thus could promote corrosion of titanium.…”

Section: Resultsmentioning

confidence: 99%

“…The initial coating of titanium was required to have good electrical contact between the palladium and the titanium. Both depositions were performed using an electron beam evaporator with a vacuum below lxlO" 6 torr.…”

Section: Hydrogen Diffusionmentioning

confidence: 99%

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Hydriding of Titanium.

Briant¹,

Kumar²,

Wang³

1998

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Hydriding of Titanium.

Briant¹,

Kumar²,

Wang³

1998

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“…The most widely studied and possibly the most important phenomenon involved in the aqueous corrosion of góld alloys is that of selective dissolution, whereby the less noble element is preferentially removed from the alloy, leaving a gold-rich residue (6). This is the basis of various practical methods for the parting gold from its alloys.…”

Section: Selective Dissolutionmentioning

confidence: 99%

Micromorphological Studies of the Corrosion of Gold Alloys

Forty

1981

Gold Bull

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Considerable insight into the detailed mechanisms by which metals are corroded can be derived from direct microscopic observations. This article describes those micromorphological changes occurring near the surface that can be observed by transmission electron microscopy after gold alloys have been subjected to anodic dissolution in strong acids. These observations are used to discuss the important problem of corrosion by selective dissolution.

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“…Moreover, the influence of these residual stresses on the corrosion resistance of the welding is studied, since it represents a fundamental characteristic that guarantees suitable properties in a gold chain's final environment of use. The most important phenomenon characterizing the corrosion of gold alloys is the selective dissolution of the less noble elements [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructure and residual stresses, generated from different annealing and deformation processes, on the corrosion and mechanical properties of gold welding alloy wires

et al. 2015

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Gold welding alloys, which are used in the production of both hollow and solid gold chains, affect the optical and mechanical properties of various gold products because the corrosion resistance of the individual links depends on these properties. It is important that welding alloys with high corrosion resistance do not degrade during or after the production process. The mechanical properties of gold welding alloy wires are strongly influenced by the alloy microstructure, which has a key role in both the machinability and the quality of the wires. In the presented work, various physical and mechanical properties of gold originating from different industrial deformation processes are evaluated. Specifically, various plastic deformation grades caused by different annealing and rolling steps are analyzed. The change of the temperature, time, and velocity parameters in the annealing and lamination processes leads to the formation of different levels of residual stresses in the material, which can generate a variation in the corrosion properties of the gold wires. The change in microstructure, due to the different annealing and rolling steps, is analyzed by optical microscope (OM) and SEM observations. The residual stresses are evaluated using XRD analysis, and the variations of the mechanical properties by micro-hardness tests. The corrosion resistance is evaluated by potentiodynamic polarization tests, in which an electrolyte solution is used to simulate human sweat. Small grain size and high homogeneity of the microstructure are preferred for the final products. In this study, the samples that have been produced are shown to have lower levels of residual stresses and feature higher corrosion resistance and more favorable mechanical properties.

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Introduction

Cited by 43 publications

References 2 publications

Hydriding of Titanium.

Hydriding of Titanium.

Micromorphological Studies of the Corrosion of Gold Alloys

Effect of microstructure and residual stresses, generated from different annealing and deformation processes, on the corrosion and mechanical properties of gold welding alloy wires

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