Microstructure and high-temperature strength of pressureless-sintered silicon carbide

Hot deformation behaviour and microstructure of a high-alloy gear steel

“…The thermal activation energy is the function of external force and decreases with the increase in external force [23]. However, a series of experiments conducted by some researchers have contradicted this theory [24], that is, activation energy Q is not a function of force, but a function of temperature, which decreases with the decrease in temperature. The reference [25] also showed that the Q depends on temperature and strain rate or stress and is close to the value of the self-diffusion activation energy, but it is only suitable for low strain rate and appears only the case of dynamic recovery.…”

Synthesis and Characterization of Uniform Fine Particles of Nickel Compounds

“…Nickel oxalate is considered an important antiferromagnetic material 1 and a precursor for the production of nickel oxide. [2][3][4][5] The latter is used in many applications, such as catalysis, 6,7 batteries, 8,9 gas sensors, 10,11 etc. In these applications, morphology and uniformity in particle size of nickel oxide significantly affect their performance.…”

“…In this regard, attempts have been made in the past by the researchers to synthesize nickel oxalate particles in different shapes and sizes and convert them into nickel oxide by thermal decomposition process. [2][3][4][5] However, we believe that there exists a room for more work in this field in order to develop routes for producing these materials in novel shapes and sizes.…”