Pure Molybdenum Plate Application Guide: Sapphire Crystal Growth Furnace to Semiconductor Target
Pure molybdenum slab is a plate made of high-purity molybdenum metal. Its melting point is 2620℃ and can maintain good shape stability at high temperatures. Both electrical and thermal conductivity are very good, and are not easy to oxidize and corrode. Because of these advantages, it is widely used in high-end manufacturing. In the two directions of sapphire crystal growth furnace thermal field and semiconductor sputtering targets, the demand for pure molybdenum plates continues to attract market attention.
1. Sapphire crystal growth furnace: the main use of pure molybdenum plate.
When sapphire crystals are grown (usually using the heat exchange method HEM process), the temperature in the furnace is very high, reaching above 1800℃. Moreover, the inside of the furnace must be very clean and must not contain impurities, so it is generally operated in a vacuum or environment with inert gas. Pure molybdenum plate can just meet these requirements.
Pure molybdenum plate can be used only after being rolled by a machine. The rolling process directly determines the quality of the product. Hongtuo has strict control in this regard. The rolling deformation can be achieved by more than 60%, and the density of the resulting plate can reach more than 10.2 grams per cubic centimeter, which is close to the theoretical value. Such plates have high strength, uniform internal structure, and are not easy to soften at high temperatures. Therefore, it is suitable for making heat shields and covers in sapphire crystal growth furnaces.
Which parts are mainly used on?
Heat shields and covers:
The heat shield in the crystal growth furnace is generally made of several layers of molybdenum plates stacked together, which is a common practice. The purity of pure molybdenum plate is critical. Hongtuo's pure molybdenum plate can achieve a purity of more than 99.95%, a melting point of 2620 ° C, and a strong heat reflection ability. After the heat shield is installed, the heat in the furnace is not easily lost, the thermal efficiency is improved, and the furnace shell is not easily damaged by heat.
In addition, the coefficient of thermal expansion of the molybdenum slab is very close to that of sapphire. In this way, when the furnace body is heated and cooled, the material will not easily crack due to thermal stress. It also has good thermal shock resistance, and the structure remains stable when the temperature changes suddenly. Therefore, many crystal growth furnace manufacturers choose molybdenum plates to make these parts.
Heating strips and connections:
The heating parts of the crystal growth furnace should also be made of pure molybdenum plates. Molybdenum plates have good conductivity, generate uniform heat after being electrified, and the temperature in the furnace is more stable. In this regard, Hongtuo can customize the size and shape of the heating belt according to the specific design of the customer's furnace body, with a relatively high degree of matching. In addition to heating strips, pure molybdenum plates are also used for connecting parts in vacuum furnaces and high-temperature resistant boats used for discharging materials.
2. Semiconductor Targets: A New Direction For Rapid Growth In Demand.
The demand for pure molybdenum slabs in the semiconductor industry is growing rapidly. High-purity molybdenum plates can be processed into sputtering targets. Place the target in a vacuum chamber and hit it with high-energy argon ions. Molybdenum atoms will be bombarded out and deposited on a glass substrate or semiconductor device to form a very thin molybdenum film. This film can be used as a conductive layer or a barrier layer and is a key link in chip manufacturing.
Nowadays, memory chips are becoming more and more advanced, and the photovoltaic industry is constantly updating technology. Some high-end chip manufacturing has begun to use molybdenum instead of tungsten, which helps simplify the production process and improve the yield rate. High-purity molybdenum has become a key material for high-end chips and high-efficiency solar cells.
Making targets requires high purity of molybdenum plates. Hongtuo's pure molybdenum plate has a purity of more than 99.95%, and impurities are well controlled, which can meet the requirements of target processing. Each batch of products will be accompanied by a component analysis report, so that customers can confirm the quality after receiving the goods.
What should I pay attention to in terms of quality？
There are international standards for molybdenum slab products to refer to. The American Society for Testing and Materials has a standard called ASTM B386, which is specific to thick plates, sheets, strips and foils of molybdenum and molybdenum alloys. There is also a corresponding standard in China, called GB/T 3876.
When purchasing pure molybdenum plates, there are several points to focus on
| Parameter to Check | Requirement | Why It Matters |
| Purity | ≥ 99.95% | High purity is required for both sapphire hot zones and semiconductor targets |
| Density | ≥ 10.2 g/cm³ | Sufficient density indicates proper rolling process and stable quality |
| Flatness | ≤ 3.2% | Poor flatness will affect subsequent processing and application |
| Standard Certification | ASTM B386 or GB/T 3876 | Compliance with standards ensures reliable quality assurance |
About Hongtuo:
Hongtuo is a company specializing in molybdenum products and has been deeply involved in the field of molybdenum and molybdenum alloy materials for many years. The company independently produces everything from raw materials to finished products. The main production links are in its own hands, and the quality is relatively easy to control. Each batch of products is accompanied by a raw material test report, size test report, density test report and composition analysis report, so that customers can check the quality batch by batch.
Hongtuo's production capacity is relatively large, with an annual output of 20000 tons, and the delivery time is guaranteed after customers place orders. The products are exported to more than 30 countries and regions such as Europe, America, Southeast Asia, and the Middle East. They are familiar with international packaging requirements, transportation methods and customs clearance procedures.
In terms of services, Hongtuo supports customizing products according to customer requirements-the size, purity, and surface treatment can all be adjusted. If you have drawings, you can also process them according to the drawings, and both OEM and ODM can accept them. There are special personnel to connect before and after sales, and the reply is more timely.
The company's philosophy is that customers come first, focus on innovation, and emphasize integrity. Customers who are interested in the product are welcome to send an email to inquire. If you need product specifications or samples, you can also contact, and we will respond in time.
