Corrosion study of Al2O3 dispersion strengthened Cu metal matrix composites in NaCl solutions

Sun, Hongbin; Wheat, Harovel G

doi:10.1007/bf00367812

Cited by 18 publications

(8 citation statements)

References 5 publications

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“…Rohatgi et al [7] used agitating mixing technology to add graphite particles and titanium to the alloy and studied the corrosion resistance, results had shown that an electrical field existed between graphite and Cu, causing corrosion, in which copper acted as a battery anode dissolved. Moreover, the corrosion rate of C/Cu composites increased with the increase of C content [8]. In addition, by observing the corrosion morphology, it was found that most of the corrosion occurred at the C/Cu interface [9].…”

Section: Introductionmentioning

confidence: 91%

“…The corrosion of Al 2 O 3 on the surface affects the coverage of the corrosion product film. However, the corrosion process is controlled by the formation and dissolution of the surface film, so Al 2 O 3 plays an important role in the corrosion process [8,23].…”

Section: Corrosion Morphology Analysis Of Al 2 O 3 Reinforced Copper mentioning

confidence: 99%

“…The corrosion rate of Al 2 O 3 /Cu composite in NaCl aqueous solution is comparable to that of pure copper. Sun et al [8] studied the corrosion behavior of Al 2 O 3 dispersion strengthened copper alloy in NaCl solution. The results showed that the corrosion process was controlled by the formation and dissolution of the surface film, and the surface of Al 2 O 3 would affect the coverage of the corrosion products.…”

Section: Introductionmentioning

confidence: 99%

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Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers

Jiang

Xiao

et al. 2020

Mater. Res. Express

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The corrosion behavior of copper matrix composites with different Al 2 O 3 whisker content in NaCl solution (3.6 wt%) at different temperatures was studied by electrochemical test and electron microscope. The results showed that with the increase of Al 2 O 3 whisker content, the corrosion tendency of the composites first increases and then decreases. The charge-transfer resistance (Rct) value and corrosion current density tend to decrease first and then rise slowly. The whiskers can cause huge differences in performance in different directions so that it is easy to agglomerate and entangle in the matrix, which can increase the heterogeneity of materials in copper matrix alloys, hence, the addition of whiskers will cause the increase of corrosion phenomenon. As the whisker content continues to increase, a large number of reinforcing phases will form a natural protective layer when exposed on the metal surface, which will slow down the corrosion situation. As the temperature increases, the corrosion resistance decreases first and then increases. When the temperature increases from 25°C to 50°C, the electrochemical reaction is accelerated, the free electrons between the metal atoms obtain external energy, the ion migration rate is accelerated, and the corrosion reaction is more likely to occur. When the temperature increases from 50°C to 75°C, the corrosion reaction rate is mainly controlled by the diffusion of oxygen. As the temperature increases, the solubility of oxygen decreases and the cathode reaction requires oxygen to participate, consequently, the corrosion rate decreases. For the microstructure of the corrosion specimen, corrosion mainly occurred at or around the reinforcement phase/matrix interface. Intermetallic compound particles often appear near corrosion initiation points along the reinforcement phase/matrix interface, and the corrosion behavior of composites is mainly determined by copper. Copper is used as the anode of the battery, and the corrosion products are mainly copper chloride salts.

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Section: Introductionmentioning

confidence: 91%

Section: Corrosion Morphology Analysis Of Al 2 O 3 Reinforced Copper mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers

Jiang

Xiao

et al. 2020

Mater. Res. Express

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“…O 2 reached the cathode surface by diffusion or convection to absorb the remaining electrons in the metal to form OH − . Cu 2+ formed corrosion product Cu 2 Cl(OH) 3 with Cl − and OH − in the solution [16,25].…”

Section: Corrosion Mechanismmentioning

confidence: 99%

Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray

et al. 2020

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Diamond particle-reinforced copper matrix composites (Diamond/Cu) are recognized as promising electronic packaging materials due to their excellent thermophysical properties. It is necessary to investigate the reliability of Diamond/Cu composites under extreme environmental conditions. The corrosion behavior of Diamond/Cu composites was studied in a 5 wt% NaCl neutral salt spray. Surface morphology, thermal conductivity, bending strength, corrosion rate, and corrosion depth resulting from corrosion were researched in this paper. The results showed that the corrosion phenomenon mainly occurs on the copper matrix, and the diamond and interface products do not corrode. The corrosion mechanism of Diamond/Cu composites was micro-galvanic corrosion. The corrosion product formed was Cu2Cl(OH)3. The salt spray environment had a great influence on the composite surface, but the composite properties were not significantly degenerated. After a 168-h test, the bending strength was unaltered and the thermal conductivity of gold-plated composites showed a slight decrease of 1–2%. Surface gold plating can effectively improve the surface state and thermal conductivity of Diamond/Cu composites in a salt spray environment.

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“…Copper/Alumina MMCs. The corrosion behavior of copper MMCs reinforced with 2.7 vol % Al 2 O 3 was examined in deaerated and aerated 3.5 wt % NaCl [143]. Galvanic corrosion with Al 2 O 3 is not expected since Al 2 O 3 is an insulator.…”

Section: D4 Copper Mmcsmentioning

confidence: 99%

Metal–Matrix Composites

Hihara

2011

Uhlig's Corrosion Handbook

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Corrosion study of Al2O3 dispersion strengthened Cu metal matrix composites in NaCl solutions

Cited by 18 publications

References 5 publications

Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers

Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers

Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray

Metal–Matrix Composites

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Corrosion study of Al2O3 dispersion strengthened Cu metal matrix composites in NaCl solutions

Cited by 18 publications

References 5 publications

Study on corrosion resistance of copper matrix composites reinforced by Al2O3 whiskers

Study on corrosion resistance of copper matrix composites reinforced by Al2O3 whiskers

Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray

Metal–Matrix Composites

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Product

Resources

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Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers

Study on corrosion resistance of copper matrix composites reinforced by Al₂O₃ whiskers