Molybdenum Wafer Is Used as Heat-sinker for LED chips

Molybdenum wafer is a circular sheet made of molybdenum material, usually with a diameter of 0.1mm to 2.0mm. It usually has high density, good mechanical properties and corrosion resistance, and can be used to manufacture various high-temperature and corrosion-resistant parts. 

From the point of view of appearance, they are generally dark brown, but after alkali washing, they are usually silver gray with high gloss. The surface is smooth and flat, without heavy skin, delamination, inclusion of impurities, and cracks, and defects such as cracked edges.

From the point of view of physical and chemical properties, they have high melting point (2620°C), density (10.2g/cm3), hardness (Mohs hardness is 5~5.5) and strength, lower coefficient of thermal expansion and resistivity, and higher high conductivity, good chemical stability, high temperature creep resistance, oxidation resistance, high temperature resistance and corrosion resistance.

There are two main production methods for molybdenum wafers, one is powder metallurgy, and the other is cold rolling. The powder metallurgy method is to mix molybdenum powder with other alloying elements, and then form it into wafers by pressing. The cold-rolling method is to make molybdenum plate blanks through high-temperature and high-pressure rolling, and then perform annealing and alkali cleaning to obtain thin molybdenum sheets. 

As molybdenum has the characteristics of high melting point, high strength, high hardness, low thermal expansion coefficient and excellent corrosion resistance, molybdenum wafers are widely used in aerospace, electronics, semiconductor, chemical and other fields, such as for the manufacture of vacuum furnace interior components, high-temperature heating elements, X-ray tube windows, linings of molten glass kettles, etc. In addition, our pure molybdenum is the ideal materials as heat-sinker for bonding to LED chips.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades. We can supply various dimensions of molybdenum discs or molybdenum waters as per the drawings. Please free feel to contact us when you get any purchasing plans.

If you have any inquiry of molybdenum wafer, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Why Molybdenum Wafer Can Be for Bonding to LED Chips?

Molybdenum wafer is a flake-shaped molybdenum material, usually with a thinner thickness and larger diameter. It is usually used in applications under high temperature, high pressure and strong corrosive environment, such as aviation, aerospace, electronics, chemical industry and other fields, and is manufactured through molybdenum material processing technology, such as rolling, drawing and other methods.

It can vary in size depending on specific application needs. Normally, its thickness can range from 0.05mm to 10mm, and the diameter can be large to 300mm. For some applications with special requirements, the size of the molybdenum wafer may need to be larger or smaller, and more precise control is also required. Its size can be selected according to the standard size provided by the manufacturer, or can be customized to meet the specific application requirements.

There are many characteristics of this material as following: 

High melting point: the melting point of molybdenum is 2610°C, which is one of the highest melting points among all metals.

High hardness: its Mohs hardness is between 6.5 and 7.5, which is harder than ordinary steel.

Good corrosion resistance: it can be used in some strongly corrosive environments, such as strong acid and strong alkali environments.

Low thermal expansion coefficient: its thermal expansion coefficient is relatively small, relatively stable, and can be used at high temperatures.

Good electrical conductivity: it can maintain good electrical conductivity at high temperature.

High strength: it has high strength and can withstand large external forces. At the same time, it has good toughness and are not easy to break.

A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. Pure molybdenum is the ideal material as carrier wafers for bonding to LED chips because of the above good characteristics. 

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades. We can supply various dimensions of molybdenum discs or molybdenum waters as per the drawings. Please free feel to contact us when you get any purchasing plans.

If you have any inquiry of molybdenum wafers, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.