YTTRIUM, ZIRCONIUM, NIOBIUM, MOLYBDENUM, RUTHENIUM, RHODIUM YTTRIUM Atomic symbol: Y Atomic weight: 88.90585 Atomic number: 39 Electron configuration: 2-8-18-9-2 Oxidation states: +3 State of matter: solid Heavy metal, brittle Discovered in 1794 by Johan Gadolin Boils at 3337°C, melts at 1529°C Notes: Yttrium is an iron gray, lustrous, and darkens when exposed to light. It is […]
Rare-earth intermetallic compounds are metal compound phases formed between rare-earth metals and other metals or similar metals. They mainly use the special physical and chemical properties of rare-earth intermetallic compounds to prepare new rare earths for various purposes using various processing and manufacturing techniques. Functional Materials. At present, there are the following rare earth metal […]
Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. The most important properties of tungsten are high melting point and high density. Meanwhile, the hardness is high and its ductility is poor to other refractory metals. All the properties make tungsten metal hard to be machined, here we will introduce […]
Pyrolytic Boron Nitride, abbreviated as Pyrolytic BN or PBN, also known as Chemical vapour-deposited Boron Nitride, Chemical Vapour-deposition of Boron Nitride or CVD-BN, etc. As the name suggests, this is a kind of boron nitride prepared by high-temperature pyrolysis reaction by chemical vapor deposition method. Speaking of boron nitride, we must first talk about the […]
Magnetism is the basic property of matter as well as force, heat, electricity and light. Materials with ferromagnetism are usually called magnetic materials. The biggest characteristic of magnetic materials is the hysteresis behavior, that is, the magnetization M changes with the external magnetic field. When H returns from a certain state to zero, M still […]
Titanium nickel alloy, also known as Nitinol, is a binary alloy composed of nickel and titanium. The atomic percentages of these two elements are approximately equal. Austenitic phase and martensite phase Due to changes in temperature and mechanical pressure, Nitinol has two different crystal structure phases, namely an austenite phase and a martensite phase. In […]
Advanced ceramics can be divided into structural ceramics, tool ceramics, and functional ceramics according to their different uses. Structural Ceramics The main materials of structural ceramics are alumina (Al2O3), silicon nitride (Si3N4), silicon carbide (SiC), and hexagon boron nitride ceramics (BN). Alumina (Al2O3) The main composition is Al2O3, and the general content is more than […]
Pyrolytic boron nitride is an anisotropic high-temperature ceramic with high electrical resistance and good thermal conductivity. It is suitable for applications requiring high strength, low thermal expansion coefficient and good thermal shock resistance. Pyrolytic boron nitride also has thermal shock resistance and is a superior sealant that protects graphite from corrosive environments, such as most […]
Nitinol (Nitinol) alloys have many material and device characteristics, for example, kinking resistance, stress constancy, dynamic interference, deflection stiffness, magnetic resonance imaging (MR1) compatibility, radiopacity and biocompatibility. The most famous characteristics of Nitinol are its superelasticity and thermal shape memory. Although the term “shape memory” describes the phenomenon of restoring a predetermined shape by hearing and […]
Niobium is used in the manufacture of products for diverse applications：-High temperature vacuum furnaces, where it is an excellent getter-Nickel based superalloys; and alloyed with titanium or tin-Superconductors-Sodium vapor lamps, where it is resistant to attack by the molten alkali-Synthetic diamonds-Sputtering targets for fiber optic applications or architectural glass-Nuclear reactors it has low thermal neutron cross […]