Overview of rare earth metals and intermediate alloys

The vast majority of single rare earth metals and their intermediate alloys are used to produce new rare earth metal materials such as neodymium iron boron, samarium cobalt permanent magnet and super magnetostriction and non-ferrous metal alloys such as AI-RE, Mg-RE, Cu-RE, Zn- RE, W-RE, Mo-RE, etc. In addition, there are a few rare earth […]

Process of high-density tungsten alloy

High-density tungsten alloy, also known as tungsten-based heavy alloy, is a type of alloy made of tungsten as the matrix element (85% ~ 99% mass fraction) with the addition of Ni, Cu, Fe and other alloy elements by liquid phase sintering. The density is up to 16.5 ~ 19.0g / cc. The most commonly used are […]

Alloying of molybdenum

The alloying principle of molybdenum is similar to that of tungsten. All the strengthening methods used to improve the heat resistance of tungsten are basically applicable to molybdenum. There are mainly the following types: solid solution strengthening, precipitation strengthening, dispersion strengthening and composite strengthening. Solution strengthening Solid solution strengthening includes the addition of trace elements […]

Strengthening of Tantalum

In refractory metals, the ductile-brittle transition temperature of tantalum is lower than -196℃, which has the best low-temperature plasticity. While maintaining this characteristic, it should be alloyed to increase its high-temperature strength. Tantalum alloys can be strengthened by solid solution strengthening, precipitation strengthening and a combination of both. The best solid solution strengthening elements are […]

Nitinol Applications

Although many nitinol applications are not well-known to the public, some applications are quite routine and familiar. The spectacle frame made of Nitinol severely deformed and then returned to normal. Similarly, a few years ago, when mobile phone antennas were made of Nitinol, they could bend without breaking or permanently bending. Another superelastic application of […]

The performance influencing factors of pyrolytic boron nitride

The production efficiency of boron nitride produced by chemical vapor deposition is high, but this method is easy to introduce pores and impurities into the sintered body and anisotropy caused by hot pressing. This makes its application very limited, especially in high temperature and oxidizing environments. Pyrolytic boron nitride materials have excellent physical and chemical […]

Element Properties: 39-45 atomic number

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

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 […]

Machining processes of tungsten Ⅱ

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 […]

Introduction to Pyrolytic Boron Nitride (PBN)

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 […]

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