Preparation of silver-coated copper powder and its oxidation resistance research

Improvement of the thermal stability of dendritic silver-coated copper microparticles by surface modification based on molecular self-assembly

“…The dendritic Ag/Cu powder particles used in this study have a few micron scale and high density; therefore, the alkanethiols adsorbed to the surface of a treated Ag/Cu powder particle does not significant contribute to its weight. In practice, the TGA of Ag/Cu powders evaluates their degree of oxidation at high temperatures rather than their organic matter content [ 12 , 17 , 29 ]. Accordingly, the degree of oxidation of the Ag/Cu powders was examined by TGA under the same conditions but without nitrogen injection.…”

“…Studies have revealed that the electrical properties of a Cu-containing electrically conductive adhesive change under pressure [18] and the distribution of Ag on the surface of Ag-coated Cu particles, determined by the Ag content and coating process, directly affects the degree of oxidation observed [19]. Ag/Cu powders are widely applied in electrically conductive adhesives and it is possible to fabricate Ag/Cu powders with different shapes through various manufacturing methods [12,[20][21][22]. It is well known that spherical Ag/Cu powder particles are suitable for anisotropic conductive adhesives, and Ag/Cu flakes are suitable for isotropic conductive adhesives [23,24].…”

“…Ag-coated Cu (Ag/Cu) conductive metal powders are commonly used in industry and while various methods exist to produce these Ag-coated Cu powders [ 11 , 12 ], related technologies are typically protected by patents [ 13 – 16 ]. The vulnerability of Ag/Cu powders to oxidation depends on their Ag content.…”

Superhydrophobicity and conductivity of polyester-conductive fabrics using alkaline hydrolysis

“…Silver has excellent conductivity; however, when exposed to the atmosphere at room temperature, its resistance increases gradually and its color changes to dark brown. 46,47 Therefore, for various applications, the conductive knitted fabric should have good conductivity as well as durability due to air and moisture to which it might be exposed in the use environment. In this study, conductive durability evaluation was performed by prolonged exposure to air and repeated water contact.…”

Fabrication and evaluation of tribological properties of Al2O3 coated Ag reinforced copper matrix nanocomposite by mechanical alloying

“…These particles can be considered as load-bearing elements and they protect the soft copper matrix from wear during the contact cycles. In the literature, silver coated copper powders are mostly used only for conductive adhesives and conductive polymers [27,28], but no studies have been conducted on the availability of the Al 2 O 3 reinforced silver coated copper matrix composites for the production of electrical contact materials. Therefore, Al 2 O 3 coated silver reinforced copper matrix composites can be used to prevent the oxidation of copper and improve the mechanical properties of the copper matrix.…”