Examination of Zinc coatings on Copper substrates by thermal analysis

Vourlias, G.; Chaliampalias, D.; Pavlidou, E.; Stergioudis, G.; Chrissafis, K.

doi:10.1007/s10973-011-2183-4

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Moreover, a major asset of this procedure is the formation of homogeneous coatings over irregularly shaped objects. [11][12][13] By this technique, copper substrates, magnesium or aluminium, and a filler are packed and sealed into a crucible with a halide salt (in our case NH 4 Cl), which is the activator of the chemical system. Afterwards, the crucible is heated in inert atmosphere at a fixed deposition temperature and time.…”

Section: Introductionmentioning

confidence: 99%

“…This is accomplished chemically using a halide activator (NH 4 Cl), which decomposes over 200uC forming NH 3 and HCl vapours, which react with the metallic powder (Al or Mg) forming the corresponding chloride vapours. 4,[11][12][13][14] These vapours dissociate either by reacting with H 2 , produced in the reaction of HCl with the metal powder, or by reacting with Cu substrate. [15][16][17] The final result is the deposition of metallic Al or Mg on the surface of the Cu substrate, while metallic chlorides are regenerated, recycling the chemical process.…”

Section: Introductionmentioning

confidence: 99%

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Protection of Cu components with Mg and Al coatings deposited by pack cementation

Stathokostopoulos¹,

Chaliampalias²,

Pavlidou³

et al. 2014

Surface Engineering

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The growth of Mg and Al coatings on copper by pack cementation is examined in this work by investigating the mechanism of the process, the effect of temperature and heating time on the coating structure. The experiments were undertaken at temperatures ranging from 550 to 600uC, while the duration of the process varied from 30 min to 3 h. It was found that the magnesium coatings consist of two phases corresponding to MgCu 2 and CuMg 2 . These phases appeared as distinguished layers or mixed with each other, depending on the deposition temperature and duration. On the other hand, the aluminium coatings consist of a single Al 4 Cu 9 phase whose thickness increases with deposition time and temperature. Finally, the oxidation resistance was also evaluated by thermogravimetric measurements, which revealed that the coated samples have superior resistance to bare copper, while Al coated coupons had the best performance when exposed in high temperature environment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Protection of Cu components with Mg and Al coatings deposited by pack cementation

Stathokostopoulos¹,

Chaliampalias²,

Pavlidou³

et al. 2014

Surface Engineering

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“…The data on gas phase composition and stability during transport in the CVD equipment are used in selection of the appropriate conditions [10]. These parameters are necessary for ascertaining of the evaporation temperature, CVD heating regime and finally the precursor decomposition temperature on the substrate surface in the last stage of the layer formation.…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition of some silver(I) carboxylates under nitrogen atmosphere

Szczęsny

Szłyk

2012

J Therm Anal Calorim

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The thermal decomposition reactions of CH 3 CH 2 C(CH 3 ) 2 COOAg (1), (CH 3 ) 3 SiCH 2 COOAg (2), CF 3 COOAg (3), (CH 3 ) 3 CCOOAg (4), C 2 H 5 COOAg (5), C 3 F 7 COOAg (6), C 6 F 13 COOAg (7) and (CF 2 ) 3 (COOAg) 2 (8) were studied in N 2 atmosphere using thermogravimetry (TG), derivative thermogravimetry and differential thermal analysis. Characterized compounds decomposed in one-or multistep processes with metallic silver formation in the range 215-465°C. TG-IR studies of gases evolved during thermolysis revealed products of decomposition, such as carbox ylic acids, CO 2 and recombination reactions.

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