All posts by: edgetechree

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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 […]

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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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Magnetic characteristics of permanent magnetic materials

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 […]

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Element Properties: 30-38 atomic number

ZINC Atomic symbol: Zn Atomic weight: 65.39 Atomic number: 30 Electron configuration: 2-8-18-2 Oxidation states: +2 State of matter: solid Heavy metal, low melting Discovered in the 13th century Boils at 907°C, melts at 419°C Notes: Zinc is a bluish white lustrous metal, stable in dry air. On exposure to moist air, it becomes covered […]

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Overview of Nitinol Material

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 […]

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Element Properties: 23-29 atomic number

VANADIUM Atomic symbol: V Atomic weight: 0.9415 Atomic number: 23 Electron configuration: 2-8-11-2 Oxidation states: +2, +3, +4, +5 State of matter: solid Heavy metal, brittle Discovered in 1801 by Andrès Manuel de Rio Boils at 3000°C, melts at 1890°C Notes: Vanadium is a light gray or white lustrous powder, it does not tarnish in […]

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An Overview of Advanced Ceramics

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 […]

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Element Properties: 16-22 atomic number

SULFUR Atomic symbol: S Atomic weight: 32.066 Atomic number: 16 Electron configuration: 2-8-6 Oxidation states: +4, +6, -2 State of matter: solid Non-metal Discovered in ancient times Boils at 444.7°C, melts at 112.8°C Notes: Because sulfur is the least reactive non-metal at room temperature, much occurs free in nature. Chemically combined, sulfur is found as […]

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Element Properties: 9-15 atomic number

FLUORINE Atomic symbol: F Atomic weight: 18.9984032 Atomic number: 9 Electron configuration: 2-7 Oxidation states: -1 State of matter: gas Non-metal Discovered in 1886 by Henri Moissan Boils at -188°C, freezes at -220°C Notes: Fluorine is the most active member of the halogen family, and produces the most stable compounds. It is very poisonous because […]

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Element Properties: 1-7 atomic number

HYDROGEN Atomic symbol: H Atomic weight: 1.00794 Atomic number: 1 Electron configuration: 1 Oxidation states: ±1 State of matter: gas Alkali metal Discovered in 1790 by Henry Cavendish Boils at-252.8°C, melts at-259.14°C Notes: Hydrogen is a colorless, odorless, tasteless gas that can be flammable or explosive when mixed with air, oxygen, and chlorine. Hydrogen is not very […]

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