Properties of WC–8Co hardmetals with plate-like WC grains prepared by plasma-assisted milling

A Novel Approach to the Rapid in situ Synthesis of Tungsten Carbide Nanopowder by Plasma Milling and Carbothermal Reduction

“…Previous work by our group [ 18–20 ] demonstrated that the use of a discharge plasma allows the fabrication of highly active W–C mixtures and promotes the reaction between W and C to form WC, thus lowering the reaction temperature of carburization. In the present study, TG‐DSC analyses of the nanocomposite powders were performed as a means of comparing their carburization processes.…”

“…Material Preparation: A milling device (PBMS, South China University of Technology, China) was used to prepare the WO 3 -C nanocomposite powders, based on working principles described in the previous publications. [18][19][20] A high-voltage alternating current power supply operating at 9.8 kHz and a maximum pulse voltage of 20 kV was applied to the ball milling jar using a single dielectric barrier discharge reactor. This current produced a homogeneous non-thermal Ar gas plasma in the milling jar.…”

“…Recently, ultrafine WC grains have been synthesized via the carburization of W–C–Co nanocomposite powders activated by plasma milling (P‐milling). This process allows the carburization temperature to be reduced by 300–500 °C by promoting the mass diffusion rates of the W and C. [ 17–20 ] P‐milling has also been reported to activate V 2 O 5 –C powder mixtures and improve the deoxidation reaction while permitting much lower temperatures to be applied. [ 21 ] These improvements are attributed to the large number of clean surface contacts and surface area of the nanocomposite produced by P‐milling.…”

Mechanical and surface characterization of Er2O3/La2O3/CeO2 doped carbide coating developed using high velocity oxy fuel (HVOF)

“…The extensive research is being conducted to modify powder coating materials in order to reduce production costs and enhance the service life of WC-Co coatings. This includes exploring the use of alternative materials such as ultrafine powders, nano-structured powders, and additives, including rare earth (RE) elements [16][17][18][19]. Carbide-based coatings are one of the coatings deposited using a thermal spray that is most frequently.…”

High Thermoelectric Performance of p-Type Bi0.4Sb1.6Te3+x Synthesized by Plasma-Assisted Ball Milling

“…The p-type Bi 2 Te 3 made by BM − displayed a low thermal conductivity and high zT value, showing the unique advantage of mechanical alloy in the improvement of TE performance. Furthermore, external field-assisted milling technologies also have developed rapidly, which can extend the function of BM, such as dielectric barrier discharge plasma-assisted ball milling (PBM) and magnetic mechanical milling. − Due to the promoting surface activation, powder refinement, and chemical reaction, the PBM has been used to fabricate the materials, which hardly can be obtained by traditional BM, including the cemented carbide, − anode materials for lithium ion batteries, and hydrogen storage materials . In detail, plasma as external physical energy introduced into the BM process can increase the system energy for the bombardment effect of high energy electron and the resultant high thermal effect, inducing a repetitive process of “melt-explosion-quenching” mechanics, which could accelerate the refinement of grains as well as can form some special microstructures.…”