Detonation Synthesis and Friction-Wear Test of Carbon-Encapsulated Copper Nanoparticles

摘要: Carbon-encapsulated copper nanoparticles were successfully synthesized by preparing an explosive mixture consisting of cupric citrate xerogel, oleic acid, and cyclonite under three operating conditions in the explosion vessel with nitrogen argon as protective gases. Results obtained through characterization detonation products X-ray diffraction, transmission electron microscopy, four-ball friction test. It showed that molar ratio to carbon mixtures exerted considerable influence on synthesis carbon-encapsulated nanoparticles. The effect was better when range no more than 0.031. In this range, particles good dispersion high degree graphitization shell, grain size approximately 10–30 nm, shell thickness 2–3 nm. When exceeded 0.031, not synthesized, included exposed amorphous carbon. A new type is presented paper, namely, mass {Cu [CO(NH2)2]2}(NO3)2, Cu 2} sorbitan stearate RDX being 16:27:10:76, suitable for After adding nanoparticles, coefficient lubricating base oil decreased increase nanoparticle dosage, anti-wear ability also increased varying degrees. To illustrate, dosage 1 wt%, improved 10.6 %.