Preparation and microstructure evolution of nanocomposite powder copper

Durisin, Juraj; Ďurišinová, Katarína; Orolínová, Mária; Saksl, K.

doi:10.1504/ijmpt.2005.006589

Cited by 4 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interest in NiCu alloy materials are well known for their corrosion resistance [2,[11][12][13][14][15], thermoelectrical [16,17], catalytic [18][19][20], and mechanical [8,21,22] properties. The electrodeposition of alumina particles in metal-matrix composites has also been widely studied [5,6] because alumina improves not only mechanical properties [4,23], but also thermal and mechanical stability at elevated temperatures [24].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of NiCu-matrix nanocomposites using a rotating cylinder Hull cell

Lozano-Morales

Podlaha

2008

J Appl Electrochem

View full text Add to dashboard Cite

The electrodeposition of NiCu composites using nanometric diameter alumina and ceria was examined using a rotating cylinder electrode (RCE) and a rotating cylinder Hull Cell (RCHC). The RCE polarization behavior was altered by the presence of particles (12.5 g L -1 ) in the electrolyte. The RCHC was used to survey the composition and deposit thickness, and hence partial current densities in order to determine the cause for the polarization changes. It is the first use of the RCHC to evaluate composite electrodeposition. Cu reduction was inhibited with both alumina and ceria particles, but the nickel and side reaction rates were dependent on the particle type. Alumina particles imparted an enhancement affect on Ni and the side reaction, while ceria did the opposite, resulting in an inhibiting effect. The deposits contained more alumina than ceria, and the alloy composition was altered most with alumina present in the electrolyte compared to a particle-free electrolyte.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrodeposition of NiCu-matrix nanocomposites using a rotating cylinder Hull cell

Lozano-Morales

Podlaha

2008

J Appl Electrochem

View full text Add to dashboard Cite

show abstract

“…Metal matrix nanocomposites consist of two phases where one phase is restricted to the nanoregime. Copper-alumina nanostructured composites can be fabricated by chemical routes (1,2) powder metallurgy (3)(4)(5)(6)(7)(8), thermochemical processing (9) and electrodeposition (10)(11)(12)(13)(14)(15)(16)(17). Their interest lies in the enhancement of mechanical properties compared to the parent metal (8,12), and for their thermal and mechanical stability at elevated temperatures (18).…”

Section: Introductionmentioning

confidence: 99%

“…Copper-alumina nanostructured composites can be fabricated by chemical routes (1,2) powder metallurgy (3)(4)(5)(6)(7)(8), thermochemical processing (9) and electrodeposition (10)(11)(12)(13)(14)(15)(16)(17). Their interest lies in the enhancement of mechanical properties compared to the parent metal (8,12), and for their thermal and mechanical stability at elevated temperatures (18). The advantage of the electrodeposition fabrication method over others is in depositing material into deep recessed microstructures for microelectromechanical system (MEMS) components.…”

Section: Introductionmentioning

confidence: 99%

Metal Matrix Nanocomposites as Thin Films and Microstructures from Basic Electrolytes

2006

View full text Add to dashboard Cite

The electrodeposition of Cu-gamma-Al2O3 nanocomposites as thin films and into recessed electrodes prepared with x-ray lithography was examined in ammonia-citrate electrolytes. Partial current density, current efficiency and deposit particle concentration were determined with a rotating disk electrode. At pH 8 the presence of particles resulted in an enhancement of the Cu reaction rate, while at pH 10 the reaction rate appeared inhibited. The amount of particles in the deposit and current efficiency was larger for pH 8 than pH 10, rendering the pH 8 solution a more promising electrolyte to electrodeposit 500 micron deep recesses for MEMS composite components.

show abstract

“…Metal matrix nanocomposites consist of two phases where at least one phase is restricted to the nanoregime. Copper-alumina can be fabricated by chemical routes 1,2 powder metallurgy, [3][4][5][6][7][8] thermochemical processing 9 and electrodeposition. [10][11][12][13][14][15][16][17] Their interest lies in the enhancement of mechanical properties compared to the parent metal, 8,12 and for their thermal and mechanical stability at elevated temperatures.…”

mentioning

confidence: 99%

“…Copper-alumina can be fabricated by chemical routes 1,2 powder metallurgy, [3][4][5][6][7][8] thermochemical processing 9 and electrodeposition. [10][11][12][13][14][15][16][17] Their interest lies in the enhancement of mechanical properties compared to the parent metal, 8,12 and for their thermal and mechanical stability at elevated temperatures. 18 Applications include its use in electronic packaging, and as materials for electrodes and contact terminals, such as highperformance electrodes for industrial spot welding.…”

mentioning

confidence: 99%

Electrodeposition of Cu–Al[sub 2]O[sub 3] Thin Films and Microposts in Ammonia-Citrate Electrolytes

Lozano-Morales¹,

Fitzgerald²,

Singh³

et al. 2006

J. Electrochem. Soc.

View full text Add to dashboard Cite

The electrodeposition of Cu-␥-Al 2 O 3 nanocomposites as thin films and into recessed electrodes prepared with X-ray lithography was examined in ammonia-citrate electrolytes. Partial current density, current efficiency and deposit particle concentration were determined with a rotating disk electrode. At pH 8 the presence of particles resulted in an enhancement of the Cu reaction rate, while at pH 10 the reaction rate appeared inhibited. The amount of particles in the deposit and current efficiency was larger for pH 8 than pH 10, rendering the pH 8 solution a more promising electrolyte to electrodeposit 500 m deep recesses for MEMS composite components.Metal matrix nanocomposites consist of two phases where at least one phase is restricted to the nanoregime. Copper-alumina can be fabricated by chemical routes 1,2 powder metallurgy, 3-8 thermochemical processing 9 and electrodeposition. 10-17 Their interest lies in the enhancement of mechanical properties compared to the parent metal, 8,12 and for their thermal and mechanical stability at elevated temperatures. 18 Applications include its use in electronic packaging, and as materials for electrodes and contact terminals, such as highperformance electrodes for industrial spot welding. 19 The advantage of the electrodeposition fabrication method over others is in depositing material into deep recessed microstructures for microelectromechanical system ͑MEMS͒ components. There are only a few studies of composite deposition into deep recesses. Jakob et al. 20 have codeposited nanometric TiO 2 and Al 2 O 3 along with nickel into microstructures. Yeh et al. 21 demonstrated the electrodeposition of submicron SiC-Ni into lithographic recessed electrodes. Wang 22 and Goods 23 reported conditions for Ni-Al 2 O 3 composites into deep recesses prepared by X-ray lithography. Panda and Podlaha 24 reported NiCu-␥-Al 2 O 3 micropost arrays electrodeposited from a pH 8 ammonia-citrate electrolyte. In this paper, we present the operating conditions to electrodeposit Cu-␥-Al 2 O 3 into deep recessed geometries.It is advantageous to understand how the particles affect the metal deposition rate and current efficiency in order to judiciously select electrodeposition conditions to deposit metal matrix composites into recessed structures. Low current efficiency, with associated gas evolution and local pH changes, can be detrimental to depositing into micro-patterned, recessed substrates due to the blockage of the electrode surface by gas bubbles or unwanted solid products. The decrease of the copper reduction partial current density due to the presence of alumina particles has been observed by Stojak et al. 14 in sulfuric acid electrolytes, and Podlaha and Landolt 15 in an acidic citrate electrolyte. Lozano-Morales and Podlaha 17 identified regions of copper inhibition and enhancement in the kinetic regime, in sulfuric acid electrolytes. Fawzy et al. 11 studied the effect of ␣-Al 2 O 3 and TiO 2 particles on copper electrodeposition from acidic baths. Both, inhibition and enhancement were ...

show abstract

Preparation and microstructure evolution of nanocomposite powder copper

Cited by 4 publications

References 0 publications

Electrodeposition of NiCu-matrix nanocomposites using a rotating cylinder Hull cell

Electrodeposition of NiCu-matrix nanocomposites using a rotating cylinder Hull cell

Metal Matrix Nanocomposites as Thin Films and Microstructures from Basic Electrolytes

Electrodeposition of Cu–Al[sub 2]O[sub 3] Thin Films and Microposts in Ammonia-Citrate Electrolytes

Contact Info

Product

Resources

About