TY - JOUR
T1 - An Effect of Co–W Barrier Sublayer on the Functional Characteristics of Au–Ru Contact Coatings
AU - Gololobov, Gennady P.
AU - Suvorov, Dmitriy V.
AU - Karabanov, Sergey M.
AU - Slivkin, Evgeniy V.
AU - Tolstoguzov, Alexander
N1 - Funding Information:
This work was supported by the Ministry of Education and Science of the Russian Federation in the frame of the state assignment FSSN-2020-0003.
Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/2
Y1 - 2022/2
N2 - The performance characteristics (microhardness, porosity, roughness, and transient resistance) of Au–Ru coatings with and without the Co–W alloy barrier sublayer electrodeposited on the surface of contact blades of commercially produced reed switches were investigated. It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. The service time of reed switches with the barrier sublayer increased in both testing modes: in low-power (50 mV, 5 µA, 50 Hz) by more than 4 × 106 switching cycles, and in mean-power (12 V, 0.25 A, 50 Hz) by more than 1.8 × 106 switching cycles.
AB - The performance characteristics (microhardness, porosity, roughness, and transient resistance) of Au–Ru coatings with and without the Co–W alloy barrier sublayer electrodeposited on the surface of contact blades of commercially produced reed switches were investigated. It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. The service time of reed switches with the barrier sublayer increased in both testing modes: in low-power (50 mV, 5 µA, 50 Hz) by more than 4 × 106 switching cycles, and in mean-power (12 V, 0.25 A, 50 Hz) by more than 1.8 × 106 switching cycles.
KW - Au–Ru coating
KW - Co–W barrier sublayer
KW - Electroplating
KW - Reed switch
KW - Switching cycle
KW - Transient resistance
UR - http://www.scopus.com/inward/record.url?scp=85123682173&partnerID=8YFLogxK
U2 - 10.3390/coatings12020161
DO - 10.3390/coatings12020161
M3 - Article
AN - SCOPUS:85123682173
SN - 2079-6412
VL - 12
JO - COATINGS
JF - COATINGS
IS - 2
M1 - 161
ER -