Combustion synthesis of TiFe by utilizing magnesiothermic reduction

Salt-assisted combustion synthesis of Ca-α-SiAlON:Eu2+ phosphors

“…5a, projected along the [001] direction, revealed that the Eu atoms substituted the Ca sites without segregation. The bright dots marked with solid circles correspond to the Eu-substituted Ca columns, as the atomic number of Eu (63) is significantly larger than that of Ca (20). This image is in good agreement with the structure model shown in Fig.…”

“…This method is a proven effective energy-and time-saving process for producing various industrial materials, owing to advantages such as high-purity products, low energy investment, and short processing time. Therefore, the SHS process has been applied to the powder production of various kinds of materials including metallic alloys [20,21], and ceramics [22,23], etc.…”

Low-temperature chemical synthesis of intermetallic TiFe nanoparticles for hydrogen absorption

“…Thus, highly crystalline intermetallic TiFe nanoparticles covered with surface oxide layers were successfully synthesized. This method is better than electrochemical methods that require higher reduction temperature [11][12][13][14][15][16][17][18] . Moreover, the particle size (45.2-46.2 nm) obtained here is much smaller than the micron sizes reported in previous works, which can be attributed to the inhibition of grain sintering by the low temperature.…”

“…Owing to their high scalability and ease of operation, physical methods, such as mechanical alloying and ball milling, are the most common methods to synthesize nanocrystalline TiFe using Ti and Fe pure metals as starting materials 9,10 . Some researchers have investigated using chemical approaches to prepare TiFe nanoparticles from metal salt precursors [11][12][13][14] . An electrochemical synthesis, which is conducted under relatively mild conditions, was investigated.…”

Chemical synthesis of unique intermetallic TiFe nanostructures originating from the morphology of oxide precursors

“…17 As for the combustion synthesis methods, Ca chips or Mg powder was used as a reducing agent and heat source to prepare TiFe powder from Fe and TiO 2 . 18,19 A mixture of Fe, TiO 2 , and Ca or Mg was heated until combustion occurred following the reduction of TiO 2 , and the temperature reached $1400 C. Aer washing with acetic acid, HNO 3 , or HCl (solution) to remove the calcium/ magnesium species, pure TiFe powders were successfully obtained. Thus, several chemical methods have succeeded in directly preparing intermetallic TiFe using titanium compounds as a titanium source.…”