Crystal StructureCubic, NaCl Structure Exposure limitsACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 InChIKeyNVDNLVYQHRUYJA-UHFFFAOYSA-N CAS DataBase Reference12069-85-1 EPA Substance Registry SystemHafnium carbide (HfC) (12069-85-1) ...
Hafnium carbideNonstoichiometryVacanciesOrderingCrystal structure predictionSuperstructuresMechanical propertiesFirst-principles calculationsCarbides of IV and V group transitional metals with B 1 structure have large homogeneity regions due to high amounts of vacancies in the carbon sublattice. Ordering of the ...
PracticallyHafnium monocarbide HfC−x structures hafnium forms with carbon the only one chemical compound (see also section C–Hf in Table I-2.13) – hafnium monocarbide HfC1−x with extremely broad homogeneity range, apart from low-temperature...
The so-called hard metals (also known as cemented carbides in the USA) are not genuine alloys but are composite materials manufactured by a powder metallurgy process from tungsten carbide (about 90% in weight) and cobalt metal (up to 10%) particles. Hard metals possess extraordinary properties...
Among the ultra-high temperature ceramics (UHTC) are a group of materials consisting of zirconium diboride or hafnium diboride plus silicon carbide, and in... SR Levine,EJ Opila,MC Halbig,... - 《Journal of the European Ceramic Society》 被引量: 830发表: 2001年 Efficient new synthetic rout...
The effect of mechanical activation modes in an AGO-2 planetary centrifugal mill used for a reaction mixture containing Hf, Zr, and C powders on its properties, phase composition formation, and the microstructure of carbide solid solutions was studied. It was shown that high-energy mixing in ...
Different compounds of hafnium used in ceramics industry are hafnium boride, hafnium carbide, hafnium nitride, hafnium oxide, hafnium silicate, and hafnium titanate. Hafnium-based oxides are currently leading candidates to replace silicon oxide as a gate insulator in fieldeffect transistors. Chemical ...
Hafnium use is limited due to low abundance. The primary use of hafnium is in the nuclear industry, where it is used in fuel rods to regulate fission given its high neutron absorption cross section. Similar to zirconium, hafnium is alloyed with niobium and carbide to produce high temperature ...
Some Properties of Hafnium Oxide, Hafnium Silicate, Calcium Hafnate, and Hafnium Carbide The behavior of hafnium oxide was studied particularly in the temperature range 1500° to 18OO°C. Properties of HfO 2 at these temperatures and its react... CE Curtis,LM Doney,JR Johnson - 《Journal of...
Hafnium has applications in welding torches and plasma cutting tips[5, 28], while hafnium carbide is useful as a lining for kilns and high-temperature furnaces, owing to their respective high melting points[3, 12]. Apart from pure Hf wires, hafnium diselenide and disulfide are good semiconducto...