We produce many other heatspreaders, e.g. 5G base station RF device CPC backplate and package, High-power chip gold-plated tungsten copper substrate (baseplate), Laser optical communication tungsten copper package, Aerospace semiconductor molybdenum copper package, 0.3mm thick CMC vapor chamber (HW), 4 inch tungsten copper discs (high power LED).

We produce various Heatspreaders for IGBT Modules, such as Spacer (Cu-plated) of IGBT for NEVs, Spacer (non-plated) of IGBT for NEVs, Tesla EV on-board laser ranging device Mo-Cu heat sink, Metro and EMU high-power IGBT Mo-Cu heat sink.

With 30 years of experience in the nickel, gold, silver, copper plating of heat sink materials, the reliability and efficiency are fully guaranteed.

Oxygen-free copper, CPC, CMC materials do not require electroplating. W-Cu and Mo-Cu materials require electroplating.

We take MoCu as an example:

We have three main types of electroplating: Ni, Ni-Ag, Ni-Cu. We treat the surface of MoCu products, then proceed with the Ni-plating, and bake them in a protective atmosphere. After baking & inspection of the nickel-plated products, then the Ni-Ag or Ni-Cu plating, and then baked. The purpose of baking is to allow nickel and MoCu to diffuse slightly and enhance the adhesion; at the same time, to check whether the coating is qualified and whether there are bubbles or delamination defects.

The components include water-cooled pipes, hot runners, microchannels, package, etc.

We are trusted by customers worldwide for its ability to solder specialty metals and their alloys to the highest standards and the most demanding customer specifications.

We specialize in the design and machining of precision parts from tungsten, molybdenum, Kovar, SiAl, Invar, Cu, Al, ODS-Cu, CIC, CKC, etc. for specialty applications across a wide range of industries. The processes involved are inherently difficult, due to the tungsten metals’ hardness, DBTT, and lack of room temperature ductility. The work requires knowledge and skills acquired by many specialists over decades and near-obsessive attention to detail and quality control.

Precision Machining Services We Can Provide:

1. Turning
2. Milling
3. Boring
4. Drilling
5. Cutting
6. Grinding
7. Stamping
8. EDM Machining

We have carried out relevant research and development of Mesophase asphalt-based carbon fiber (MPCF) -copper/aluminum composites, completed trial production and are ready for mass production. The picture displayed is a metallographic photo of the MPCF carbon fiber aluminum composite sample we made.

We can mass produceSubstrates & Spacers from tungsten copper, molybdenum copper, CPC, CMC, oxygen-free copper, Kovar and other materials. Upon customer requirements, they can be bare, or can also be electroplated in nickel/gold, etc.

Among existing heat-sink technologies, pin-fin heat sinks represent an efficient cooling solution. They have a large surface area in relation to any other heat-sink volume. In addition, pin-fin heat sinks are made of highly thermally conductive aluminum alloys or copper. Pin-fin heat sinks consist of a base and an array of embedded pins. Parameters such as base-plate dimensions (both footprint and thickness), pin length, thickness and density, and material (aluminum, copper or others) fit most specifications. As a result, pin fins can easily be customized to fit various applications depending on heat loads involved, available space, and airflow.

We design and manufacture Pin-Fin base plates for the power electronics industry. These base plates offer the most efficient heat transfer available today due to our forging, machining, plating and surface treatment technology.

Al-Si alloy is a forging and casting alloy mainly composed of aluminum and silicon. Generally, the silicon content is 11%, and a small amount of copper, iron, and nickel are added to improve the strength. AI-Si alloy is widely used in the automobile industry and machine manufacturing industry to make some parts under sliding friction conditions because of its lightweight, good thermal conductivity, certain strength, hardness, and corrosion resistance. Al-Si alloy is also widely used in aviation, transportation, construction, and other important industries.

Al-SiC MMC are used in various fields like aerospace, aircrafts, underwater, automobile, substrate in electronics, golf clubs, turbine blades, brake pads etc. Several fabrication techniques are available for the production of Al-SiC MMC. Among the various methods, stir casting route is simple, less expensive, and used for mass production.

Copper/diamond composites have the potential to be used as the next-generation heat sink materials in advanced electronic devices, and this is because the diamond has the highest TC up to 2200 W/(m・K) in nature; the CTE of copper/diamond composites could be tailored to be close to that of semiconductor chip materials (4–6 ppm/K); the TC of Cu-diamond composites could reach 500–900 W/(m・K) ; and the composite is stable at ambient temperature and has isotropic TC, which doesn’t limit its wide applications.

Diamond-Al is similar to Diamond-Cu, with less density and less thermal expansion.

Ag (Silver) having a higher thermal conductivity than Copper, is the material with the highest thermal conductivity among metals. This Ag and diamond powder are mixed and sintered by our own technology to successfully produce a new material with thermal conductivity of 600 W/(m・K) or more.

Among existing heat-sink technologies, pin-fin heat sinks represent an efficient cooling solution. They have a large surface area in relation to any other heat-sink volume. In addition, pin-fin heat sinks are made of highly thermally conductive aluminum alloys or copper. Pin-fin heat sinks consist of a base and an array of embedded pins. Parameters such as base-plate dimensions (both footprint and thickness), pin length, thickness and density, and material (aluminum, copper or others) fit most specifications. As a result, pin fins can easily be customized to fit various applications depending on heat loads involved, available space, and airflow.

We design and manufacture Pin-Fin base plates for the power electronics industry. These base plates offer the most efficient heat transfer available today due to our forging, machining, plating and surface treatment technology.

Cu/MoCu/Cu (CPC) is a sandwiched composite similar to Cu/Mo/Cu comprising a Mo70-Cu alloy core layer, usually Mo70Cu but other combinations such as Mo50Cu is possible, and two copper clad layers. It has different CTEs in the X and Y direction. Its thermal conductivity is higher than those of W/Cu, Mo/Cu, Cu/Mo/Cu.

The CPC layer thickness ratio can also be adjusted to obtain different coefficients of thermal expansion. The CTE of CMC in the X and Y directions is the same, but the that of CPC is adjustable, due to the adjustable deformation of molybdenum particles in the core layer of molybdenum copper. All CPC sheets can be stamped.

Our CPC process has cost-efficiency and top quality. Our products are widely used in applications such as optoelectronics packages, microwave packages, laser sub mounts, etc.

High-strength tungsten alloy wire for silicon wafer cutting in photovoltaic industry, High-strength tungsten alloy wire in monocrystalline furnace in photovoltaic industry, Tungsten-rhenium alloy wire for thermocouples, High-temperature anti-deformation tungsten rod and wire heating element and supporting parts for high-temperature industrial furnace, Medium-temperature anti-deformation molybdenum rod and wire heating element and supporting parts for medium-temperature industrial furnace, High-performance tungsten alloy anode for high-end electric light source, Cathode and anti-vibration filament, High-performance tungsten alloy electrodes for TIG welding and plasma cutting, High-strength molybdenum alloy wire for CNC wire cutting machine tools in high-end manufacturing, etc.

The setter plates used in the electronic ceramics industry are mainly made from: tungsten aluminum, pure tungsten, pure molybdenum, large crystal pure molybdenum, large crystal molybdenum lanthanum, TZM, etc.

Tungsten aluminum can be used for more than 1800°C if K-doped. It is relatively expensive.

Pure tungsten can also be used above 1600°C.

Ordinary pure molybdenum, generally used below 1000 °C.

TZM has outstanding strength advantages below 1400°C.

Large-crystalline molybdenum lanthanum has good strength below 1800 °C.

Semiconductor grade single crystal furnace is an important crystal growth equipment in the single crystal silicon industry chain. At present, the Czochralski has the advantages of large single crystal quality, large diameter, low cost and high production efficiency, and has always been the main method for the preparation of semiconductor silicon substrates.

The hammer is usually made of tungsten and molybdenum materials as it is used in high temperature furnaces that require the materials to be heat resisting. It is mainly used to connect molybdenum seed holder and tungsten wire rope, and is hung on the suspension clamp or jumper the bottom, increasing the clamp vertical load heavy objects. Its concentricity requires to be the same as seed holder and tolerance is very strict.

The purity of the hammer is ˃99.95%, the concentricity with a tolerance ˂0.02 mm is the same as that of the molybdenum seed crystal chuck. The hammer can be customized upon requirement.

Rhenium metal is expensive and rarely used alone, and it is mainly used as an additive to improve the creep resistance of high temperature alloys.

Rhenium metal is silvery white and extremely hard; it resists wear and corrosion very well and has one of the highest melting points of the elements. The melting point of rhenium, 3,180 °C (5,756 °F), is exceeded only by those of tungsten and carbon. The metal powder slowly oxidizes in air above 150 °C (300 °F) and rapidly at higher temperatures to form the yellow heptoxide, Re2O7. The metal is not soluble in hydrochloric acid and dissolves only slowly in other acids.

The metal and its alloys have found various applications as turbine blades in fighter-jet engines, fountain pen points, high-temperature thermocouples (with platinum), catalysts, electrical contact points, and instrument-bearing points and in electrical components, such as in flashbulb filaments as an alloy with tungsten.

The conventional pure tantalum and pure niobium products (purity> 99.9%) are widely used for various high temperature and high vacuum heating elements and structural parts, sputtering targets, melting crucibles, chemical anti-corrosion, electronic components and other fields. Niobium alloy (NbZr1, Nb521, C103, etc.) has higher strength and high temperature performance than pure niobium, mainly used in aerospace engine parts and nuclear reactor structural parts. Tantalum alloy (TaW2.5, TaW10, TaW12, TaNb40, etc.) can significantly improve the strength and toughness while maintaining excellent ductility, widely used in chemical anti-corrosion, defense and military fields.

Tantalum (Ta) is bright, very hard, silver-gray metal, characterized by its high density, extremely high melting point, and excellent resistance to all acids except hydrofluoric at ordinary temperatures. Tantalum is chemically much like niobium because both have similar electronic configurations and because the radius of the tantalum ion is nearly the same as that of niobium as a result of the lanthanoid contraction. Tantalum is ductile, easily fabricated, highly resistant to corrosion by acids, and a good conductor of heat and electricity and has a high melting point. The major use for tantalum, as tantalum metal powder, is in the production of electronic components, mainly tantalum capacitors. Major end uses for tantalum capacitors include portable telephones, pagers, personal computers, and automotive electronics. Alloyed with other metals, tantalum is also used in making carbide tools for metalworking equipment and in the production of superalloys for jet engine components.

The pure niobium metal is soft and ductile; it looks like steel or, when polished, like platinum. Although it has excellent corrosion resistance, niobium is susceptible to oxidation above about 400° C (750° F). Niobium can best be dissolved in a mixture of nitric and hydrofluoric acids. Niobium in the form of ferroniobium is used worldwide, mostly as an alloying element in steels and in superalloys. Appreciable amounts of niobium in the form of high-purity ferroniobium and nickel niobium are used in nickel-, cobalt-, and iron-base superalloys for such applications as jet engine components, rocket subassemblies, and heat-resisting and combustion equipment. Completely miscible with iron, it is added in the form of ferroniobium to some stainless steels to give stability on welding or heating. Niobium is used as a major alloying element in nickel-based superalloys and as a minor but important additive to high-strength, low-alloy steels. Because of its compatibility with uranium, resistance to corrosion by molten alkali-metal coolants, and low thermal-neutron cross section, it has been used alone or alloyed with zirconium in claddings for nuclear reactor cores. Cemented carbides used as hot-pressing dies and cutting tools are made harder and more resistant to shock and erosion by the presence of niobium. Niobium is useful in constructing cryogenic (low temperature) electronic devices of low power consumption.

We can provide high-purity tantalum and niobium products with a purity of up to 99.995%, as well as composite plates of tantalum and niobium with copper, steel, kovar, etc.

Alumina (Al2O3) Nanoparticles render high temperature strength and hardness to the alloy with no significant reduction of the conductivity, so the alloy has good comprehensive performance even under an environment up to 1000 °C, that’s why it’s called also "Super Copper".

The ODS copper has electrical and thermal conductivity similar to that of pure copper and other copper alloys.

Tungsten has the advantages of high melting point and high strength, while copper has the advantages of high thermal conductivity and excellent solderability. Therefore, their combination with the advantages of both are widely used in occasions with extremely high requirements for high temperature strength and thermal conductivity. They can be used in the first wall and divertor components of thermonuclear fusion reactors, Medium and high voltage contacts, high-power resistance welding and arc welding components, etc. We have rich experience and technologies in the manufacturing of these high-performance materials.

Back-cast materials simultaneously combine the material properties of two different material components. During this process, the materials themselves are retained in their original state and are bound only at a thin junction. The metals are fused in a mold to form a bond of only a few micrometers in size. Unlike welding and soldering techniques, this method guarantees a 100% connection and ensures optimal thermal conduction.

The tungsten wire rope has both high flexibility and high strength, widely used in the production of high-purity silicon monocrystalline ingots.

With our high-quality tungsten wire ropes and strands, you can count on particularly high load-bearing capacity and durability. They are ideal for use in demanding applications where absolute reliability is essential. As a renowned manufacturer of tungsten ropes and strands, we also offer you a high degree of flexibility in designing your individual solution.

Our tungsten ropes and strands are available in a variety of rope constructions and diameters to suit the particular requirements of your application. The material of tungsten ropes is exclusively pure tungsten wire.

Tungsten heavy alloys (WHAs)have been emerged as the material of choice for applications in various strategic sectors due to their unique properties, such as high density, high strength, high impact strength and corrosion resistance, etc. Commonly, Ni based binders such as Ni–Fe, Ni–Cu, etc. are used to consolidate WHAs.

Because pure tungsten is expensive and difficult to manufacture and machine, alternative materials were sought which would maintain some of the useful characteristics of tungsten, such as density and X-ray shielding capabilities, but which would be easier to machine and less expensive. The result of this quest are the Heavy Tungsten Alloys.

Tungsten heavy alloys are ideal for high-density applications or for use in radiation shielding. Heavy metal tungsten alloys are 90% to 97% pure tungsten in a matrix of nickel/copper or nickel/iron. We can custom machine any alloys to finished parts according to your specifications.

Mo-Cu alloy is also a pseudo alloy, molybdenum and copper are immiscible, fully combining the high thermal conductivity, high melting point, low CTE of molybdenum and the high thermal conductivity of copper. Compared with WCu, it has lower density and better rollability, which is suitable for the production of thin strip products; it can be stamped, suitable for high-volume, low-cost production of parts. It is mainly used for electrodes and sweating materials.

The composition of Mo and Cu can be adjusted, Mo_xWith_and，x+y=100.

Ourmolybdenumcopper alloy can achieve almost complete compactness, no defects, fine grain structure, airtightness -9Pa/m³.s (with helium leak detection mass spectrometer), comparable to any first-class products in the world.

Tungsten copper alloy is a pseudo alloy, tungsten and copper are not miscible, fully combined the high thermal conductivity, high melting point, low thermal expansion coefficient of tungsten and the high thermal conductivity characteristics of copper.

Our tungsten copper alloy can achieve almost complete compactness, no defects, fine grain structure, airtightness

Pure Molybdenum:

With a purity of > 99.95%, it is widely used in various electrodes, heating elements, sputtering targets, high-temperature boats, heat shields, setter plates, crystal crucibles, ray shielding, power devices heat dissipation and other occasions.

Big-grain molybdenumis a pure molybdenum material with a special macrocrystalline structure, which has good high-temperature deformation resistance and can be used for occasions above 1450°C.

Strengthened Molybdenum:

Rare earth strengthened Mo(MoLa, MoLaY) andTo-Al-K I,compared with pure Mo, have better high-temperature strength, can be used in occasions above 1450 °C, and have better machining performance, so that they can be used under high-temperature such as setter plates, screws and nuts, boats, heating elements, anti-deformation heat shields, high-strength clamps, and many other occasions.

We produce all common forms of molybdenum and alloyed products, including plate; sheet; strip; foil; rod; and wire. These are isostatically pressed and sintered from pure metal powders into to compact billets through powder metallurgy. Additional deformations and heat treatments are applied, often followed by grinding, polishing, cleaning, or other surface treatments, until the finished product meets exacting, individual customer specifications.