Comparison of the effects of microwave and spark plasma sintering on the electrical, thermal, and mechanical properties of Cu-LaB_6 nanocomposites
Küçük Resim Yok
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The effects of lanthanum hexaboride $(LaB_6)$ nano-particles on the electrical, thermal, and mechanical properties of copper-based nanocomposites (Cu-LaB6) produced using microwave sintering (MS) and spark plasma sintering (SPS) processes were investigated in this study. Nano LaB6 particles reduced the electrical conductivity of Cu matrix nanocomposites produced via MS and SPS by 20% and 13%, respectively. $Cu-LaB|6$ nanocomposites had lower thermal conductivity than unreinforced Cu. The electrical and thermal conductivities of the $Cu-LaB|6$ nanocomposite produced by the SPS process were higher than those of the $Cu-LaB_6$ nanocomposite produced by the MS process. An equation that takes particle volume ratio and porosity into account was developed to predict the thermal conductivity of nanocomposites from their electrical conductivity. The calculated thermal conductivity values for $Cu-LaB_6$ nanocomposites were very close to the experimental results. $Cu-LaB_6$ nanocomposites had much higher hardness and compressive strength by 49% and 38%, respectively, compared to those of unreinforced Cu. The hardness and compressive strength of the Cu-LaB6 nanocomposite produced by SPS were higher than those of the Cu-LaB6 nanocomposite manufactured via MS. Although nano LaB6 reinforcement particles reduced the electrical and thermal conductivities of Cu, $Cu-LaB_6$ nanocomposite having high hardness and compressive strength were produced by combining the positive influences of nano $LaB_6$reinforcement particles and the SPS process.
Açıklama
Anahtar Kelimeler
Copper, Electrical and thermal conductivity, Microwave sintering, Nanocomposite, $Nano-LaB_6$, Spark plasma sintering Bakır, Elektriksel ve ısıl iletkenlik, Mikrodalga sinterleme, Nanokompozit, $Nano-LaB_6$, Kıvılcım plazma sinterleme
Kaynak
Gümüşhane Üniversitesi Fen Bilimleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
11
Sayı
4
