2024

Semiconductor Industry's Expectations for High Quality Diamond

Semiconductor materials are a type of functional material with conductivity between conductive and insulating materials at room temperature. Its conductivity will significantly change with temperature, light exposure, and doping, especially doping can change the conductivity and type of semiconductor, which is the basic basis for its wide application in manufacturing various electronic components and integrated circuits.
1、 Characteristics of Semiconductor Materials
The characteristic parameters of semiconductor materials include bandgap width, resistivity, carrier mobility, non-equilibrium carrier lifetime, and dislocation density.
Band gap width: determined by the electronic state and atomic configuration of the semiconductor, reflecting the energy required for valence electrons in the atoms that make up this material to be excited from a bound state to a free state; The bandgap width is an important characteristic parameter of semiconductors. Metals have a zero bandgap, insulators have a large bandgap (usually greater than 4.5 eV), and semiconductors have a median bandgap.
Resistivity and carrier mobility: reflect the conductivity of the material;
Non equilibrium carrier lifetime: reflects the relaxation characteristics of internal carriers in semiconductor materials transitioning from non-equilibrium state to equilibrium state under external effects (such as light or electric field);
Dislocation density: used to measure the degree of lattice integrity of semiconductor single crystal materials.
The characteristic parameters of semiconductor materials can not only reflect the differences between semiconductor materials and other non semiconductor materials, but more importantly, they can reflect the quantitative differences in the characteristics of various semiconductor materials and even the same material in different situations.
As silicon-based electronic devices gradually approach their theoretical limits, research on wide and ultra wide bandgap semiconductor materials has become a new competitive hotspot in recent years. Gallium nitride, silicon carbide, and zinc oxide are all wide bandgap semiconductor materials because their bandgap width is above 3 electron volts, making it impossible to excite valence band electrons to the conduction band at room temperature. The working temperature of the device can be very high, for example, silicon carbide can work stably for a long time below 600 ℃.

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The Basic Characteristics of Artificial Diamond

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The Basic Characteristics of Artificial Diamond

How to choose diamond coated cutting tools

Like any other cutting tool, the lifespan of stone carving knives varies, mainly depending on the material being cut, the selected feed rate and cutting speed, as well as the geometric shape of the workpiece. Generally speaking, the lifespan of diamond coated tools for processing graphite is 10-20 times that of uncoated hard alloy tools, and in some cases may even be longer. In this way, almost any machining task can be completed with a single tool without the need for tool replacement due to tool wear, avoiding machining interruptions and recalibration, making it possible to achieve unmanned machining. In the processing of composite materials, it is also entirely possible to achieve a longer tool life

Do you know the raw materials for high-quality cutting blades?

Glass cutting blades are particularly suitable for accurate cutting and slotting of optical and electronic components due to the strong holding ability and high wear resistance of diamond abrasive particles by binders.

How to choose between using CBN grinding wheel or diamond grinding wheel?

CBN and diamond belong to the category of super abrasives, and are called super abrasives because their hardness is much higher than other traditional abrasives. So, both are super abrasives, how do you distinguish between the two, and how do you choose the grinding wheel abrasives that are suitable for your own production? Firstly, we need to understand the characteristics of both.

Development status of diamond micro powder industry: The industry is developing towards intelligent production

Diamond micro powder refers to diamond particles with a particle size smaller than 54 microns and a chemical composition of carbon, which is the hardest substance in nature. Diamond micro powder is a micron or submicron level ultrafine diamond powder formed by processing diamond single crystals through crushing, ball milling, and other processes. Diamond has high strength and good wear resistance, with a Mohs hardness of 10 and a microhardness of 10000kg/mm2. Its microhardness is 1000 times higher than that of quartz and 150 times higher than that of corundum. Therefore, diamond micro powder, as a superhard abrasive, has unparalleled grinding ability compared to other products and is increasingly receiving high attention from developed industrial countries.

Semiconductor Industry's Expectations for High Quality Diamond

The company is positioned to focus on the production, research and development, and innovation of diamond micropowder and diamond crushing materials; for a long time, it has always adhered to this goal and has become the mission of the company.

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