PRODUCTS & SERVICES
Advanced Materials
"Advanced Materials" is based on solid rocket high-performance material technology. At present, the composite business of special metal materials, photovoltaic thermal field materials and carbon/carbon composites has been formed.
1.Molybdenum Copper Microelectronic Packaging Material
-- Basic information --
Molybdenum copper is a composite material of molybdenum and copper. It has adjustable coefficient of thermal expansion and thermal conductivity. The molybdenum-copper have the low density, high strength, high specific gravity, good conductivity and good process ability. It is more suitable for aerospace, electronic packaging, and communications.
-- Product parapmeters --
-- Application areas --
Molybdenum copper material is the preferred material in the field of condutive heat dissipation components used in high-power integrated devices. Molybdenum-copper materials have a certain range of applications in semiconductor technology, high-voltage switch contacts, nuclear technology, and medical systems.
-- Product advantages --
Molybdenum-copper have better thermal conductivity；
Molybdenum-copper are resistant to ablation, and have good conductivity and processability;
The content of molybdenum in molybdenum copper is controlled stably, and the coefficient of thermal expansion and thermal conductivity are very stable;
Better electroplating quality, good thermal shock resistance; relative density ≥99%, low porosity, better air tightness.
2.Tungsten Copper Microelectronic Packaging Material
-- Basic information --
Tungsten copper is a composite material of tungsten and copper. The main purpose of this material is to use both the low expansion characteristics of tungsten and the high thermal conductivity of copper. By adjusting the different proportions of tungsten and copper elements, the purpose of tungsten-copper materials with suitable coefficient of thermal expansion and high thermal conductivity is achieved.
-- Product parameters --
-- Application areas --
Tungsten copper microelectronic packaging materials can form good matching characteristics with ceramic materials, semiconductor materials, and metal materials. Therefore, it is suitable for packaging materials of high-power devices, such as substrates, lower electrodes, etc. high-performance lead frames; thermal control boards and radiators in military and civilian thermal control devices.
-- Product advantages --
Without sintering activation elements, it has good thermal conductivity;
There is no copper enrichment in the product;
Good size control, surface finish and flatness;
Good electroplating quality, thermal shock resistance;
Relative density ≥99%, low porosity and good air tightness.
3.Diamond/Copper Heat Sink Material
-- Basic information --
Diamond/copper is a composite material of diamond and copper. It is usually prepared by pressure infiltration process or powder metallurgy process. With the increase in heat dissipation requirements for second- and third-generation high-power semiconductor chip devices such as gallium arsenide (GaAs), gallium nitride (GaN), and silicon carbide (SiC), diamond/copper materials have been widely promoted and applied.
-- Product parameters --
-- Application areas --
Diamond/copper is currently widely used in semiconductor lasers, microwave power devices, and high-power semiconductor lighting.
-- Product advantages --
High thermal conductivity and low thermal expansion coefficient;
The composition of diamond and copper can be customized;
High processing size precision and strong controllability, effectively improving the surface and corner quality;
Better electroplating quality and thermal shock resistance.
4.Tungsten Copper Heat Sink Material for Lasers
-- Basic information --
Tungsten copper heat sink products are made of a combination of tungsten and copper in a certain proportion. They have both the low expansion characteristics of tungsten and the high thermal conductivity characteristics of copper. Therefore, the tungsten copper heat sink prosucts can be a good heat dissipation auxiliary material for the laser.
-- Product parameters --
-- Application areas --
Tungsten copper heat sink products are mainly used in semiconductor lasers of different wavelength bands such as 808nm and 1064nm.It is used in the field of medical cosmetology, such as hair removal and wrinkle removal.
-- Product advantages --
The copper content is evenly distributed and the composition consistency is good;
The thermal expansion coefficient of the tungsten copper heat sink materials and the laser chip are well matched;
Good size control, surface finish and flatness;
Good plating quality.
5.Electrical Contact Materials
-- Basic information --
The powder gold treatment electrical contact materials produced by our company, Tungsten copper and Tungsten Carbide copper are composed of tungsten or tungsten carbide as skeleton, and copper is filled in the pores of skeleton to form composite materials, the high melting point skeleton ensures the contact's compressive strength, resistance to electric corrosion and resistance to fusion welding.
Copper not only improves the conductivity, heat conduction and processing performance, but also absorbs a large amount of arc heat when the arc evaporates at high temperature, improvement of service conditions and reduction of electric erosion.
-- Product parameters --
-- Application areas --
The WCU products includes WCu10 ~ WCU50 alloy contact materials, Cu-W-WC and CU-WC, CUCR contact materials. The products are mainly used in the contact materials of vacuum interrupter of medium and high voltage vacuum load switch, vacuum contactor and circuit breaker.
-- Product advantages --
High density, high thermal conductivity, high strength and hardness.
Low resistivity, low Coefficient of thermal expansion.
Excellent properties such as resistance to arc erosion, resistance to fusion welding and resistance to electrical erosion.
6.TC-1840 Mini Triggered Spark Switch
-- Basic information --
TC-1840 Mini Triggered Spark Switch is a kind of high reliability switching up to 3.5kV and 3KA. Constructed of hermetically sealed ceramic-metal,filled with compressed gas.
The triggered spark switch has three electrodes. It is pressurized switch that operates in an in-line ignition systems,conducting moderately high peak currents for short duration.Commutation between two main electrodes is initiated by a trigger pulse.
-- Product parameters --
-- Application areas --
The spark switches are used in aircraft such as rocket motor ignition,warhead detonation and missile stage separation. Each of the applications involves the activation of electro-explosive devices such as:
Exploding bridgewire(EBW)
Exploding foil-initiator(EFI)
Electronic safe and arm(ESA)
Slapper/detonator
-- Product advantages --
Compact size and light weight.
Sturdy and durable.
Fast response.
It can meet the harsh requirements of the size, switching speed, impact, temperature change and vibration of the rocket working in the harsh environment.
7. TC-1840 Cold Cathode Trigger Tube
-- Basic information --
This is a high-reliability trigger switch in a metal and ceramic package with a three-electrode design and a tube filled with insulating gas.
The operating voltage range is 1.2kV ~ 3.0kV, the triggering voltage range is 1.0kV ~ 2.0kV, the peak current is greater than 3kA, and the life is greater than 1000 times.
When used, the working voltage is first added to both ends of the anode and cathode to charge the energy storage capacitor.
During ignition, a trigger signal is applied between the trigger pole and the cathode to make the anode and cathode conductive, and a peak current is generated in a short time, so that the explosive bridge wire in series in the loop is fused and the engine powder column is ignited.
-- Product parameters --
-- Application areas --
The following reliability tests were carried out in the National Military Electronic Components Center, meeting the requirements of the national standard SJ20474:
(1) High and low temperature storage test: in non-working state, high temperature (55±2) ℃, heat preservation for 8h; In non-working condition, low temperature (-40±3) ℃, heat preservation for 8 hours;
(2) Temperature cycle test: temperature gradient, (-55±3) ℃ ~ (70±3) ℃, cycle three times, duration 30min, conversion time is not more than 5min;
(3) Constant wet heat test: T= (40±2) ℃, relative humidity 90% ~ 95%, holding for 96 hours;
(4) Vibration test: non-working state a=70m/s², A=0.75mm,f=(55 ~ 2000)Hz, lasting 10 minutes, radial and axial three times each;
(5) Impact test: non-working state, half sine wave a=70m/s², pulse duration 11ms, velocity variation 2.1m/s, radial and axial three times each;
(6) Life test: the life of the trigger tube under 3kV operating voltage and 0.2μF capacitor energy is more than 2000 times;
(7) Low pressure test: air pressure at (40±10) Pa, keep for 5min.
-- Product advantages --
Small size.
Strong and durable.
The reaction speed is fast.
Can meet the rocket working in harsh environment on the size, switching speed, impact, temperature change, vibration and other harsh requirements.
8. Carbon/Carbon Cylinder
-- Basic information --
The Carbon/Carbon Cylinder is created for making single-crystal silicon in the furnace hot zone, which supports the whole system and protects single-crystal silicon from overheat environment. Material this cylinder used is specifically for insulating heat, and this kind of material is stable enough for long time using in the furnace. Based on different requirements from clients, the cylinder can also change into different types.
-- Product parameters --
-- Application areas --
Carbon/Carbon cylinder is used for solar and semiconductor industry, and it mainly used in single-crystal furnace hot zone. The cylinder provides support for the system and insulates heat to grow more single-crystal silicon.
-- Product advantages --
Carbon/Carbon cylinder is used for solar and semiconductor industry, and it mainly used in single-crystal furnace hot zone. The cylinder provides support for the system and insulates heat to grow more single-crystal silicon.
9. Carbon/Carbon Crucible
-- Basic information --
Carbon/Carbon Crucible is created for making single-crystal silicon in the furnace hot zone system, which is put outside the quartz crucible to protect single-crystal silicon from extremely overheat environment.
Material this crucible used is specifically for insulating heat, and this kind of material is stable enough for long time using in the furnace. Based on different requirement from clients, the crucible can also change into different types.
-- Product parameters --
-- Application areas --
Carbon/Carbon crucible is used for solar and semiconductor industry, and it mainly used in single-crystal furnace hot sone system. The crucible supported quartz crucible to grow more single crystal silicon.
-- Product advantages --
The Carbon/carbon crucible can suffer serious abrasion for at least several months.
The product has high stability, and it benefits making high purity material.
The product can use lower power growing more single crystal silicon in the furnace.
The Carbon/Carbon crucible has different types for satisfying client’s requirements such as different height and diameter.
10. Carbon/Carbon Crucible
-- Basic information --
Carbon/Carbon Brake Disc produced by Chaoma has been approved by Civil Aviation Administration of China, which can be equipped on B757-200, A318/319/320 aircraft. In practice, the product successfully used in highland airline that over altitude 3500 meters “Lhasa-Bonda”.
Carbon/Carbon Brake Disc from Chaoma has outstanding quality of mechanical property, thermal conductivity and friction coefficient.
-- Product parameters --
-- Application areas --
Carbon brake discs are used in civil aviation, are part of aircraft brake devices, and are important safety components in the civil aviation industry.
-- Product advantages --
Carbon/Carbon Brake Disc from Chaoma has outstanding quality of mechanical property, thermal conductivity and friction coefficient. The disc performance of the aircraft aborted take-off and wet brakes is 16% to 30% better than discs from original products, and its comprehensive performance has reached the advanced level of similar international products.
11. Carbon/Carbon Plate
-- Basic information --
The Carbon/Carbon Plate is applied for making single-crystal silicon in the furnace hot zone, which connects the whole system and protects single-crystal silicon from extremely overheat environment. The product material is made of carbon carbon material with high temperature resistance and high temperature treatment technology to increase the stability of the material and support the normal operation of the thermal field system of the single crystal furnace. Products can be customized according to customer requirements for different specifications, in line with the use of different types of monocrystalline silicon furnace.
-- Product parameters --
-- Application areas --
Carbon/Carbon plate is used for solar and semiconductor industry, and it mainly used in single-crystal furnace hot zone. The plate provides support for the system and insulates heat to grow more single-crystal silicon. Some parts of system need the plate to connect each other for better functioning.
-- Product advantages --
The Carbon/carbon plate with high intensity can suffer serious abrasion for at least several months. The product is relatively easy to mechanical process.
The carbon/carbon plate can be alternative products for graphite.
The product can use lower power growing more single crystal silicon in the furnace.
The Carbon/Carbon plate has different types for satisfying client’s requirements such as different height and diameter.
12. Carbon/Carbon Thermal Insulation Tube
-- Basic information --
Carbon/Carbon Thermal Insulation Tube is used for making single-crystal silicon in the furnace hot zone system., which protect single-crystal silicon from extremely overheat environment and conduct single crystal silicon.
Material this tube used is specifically for insulating heat. After processing high temperature and diverse technic, carbon/carbon material has high stability. Based on different requirements from clients, the thermal insulation tube can also change into different types.
-- Product parameters --
-- Application areas --
Carbon/Carbon thermal insulation is used for solar and semiconductor industry, and it mainly used in single-crystal furnace hot sone system. The tube protect single-crystal silicon from extremely high temperature and conduct single crystal silicon.
-- Product advantages --
The Carbon/carbon thermal insulation tube can be highly functional in extremely high temperature with carbon/carbon material.
The product can suffer serious abrasion for long time using.
The product can use lower power growing more single crystal silicon in the furnace.
The Carbon/Carbon crucible has different types for satisfying client’s requirements such as changing height and diameter.
13.Carbon/Carbon Heat Compression Mold
-- Basic information --
Carbon/Carbon Heat Compression Mold is used for ceramic furnace hot zone system., which is put outside the ceramic product to protect material from extremely heat environment. Material this mold used is specifically for insulating heat, and this kind of material is stable enough for long time using in the ceramic furnace. Based on different requirement from clients, the mold can also change into different types. The maximum size reaches Ф800×1000mm or more.
-- Product parameters --
-- Application areas --
Carbon/Carbon heat compression mold is used in ceramic furnace hot zone. With its outstanding heat insulation character, the product can assist to produce ceramic product overheat environment.
-- Product advantages --
This product has high intensity, and the service life can be up to two years. Under the high temperature, material the mold use can still keep stable. The tensile strength of the 3D structure hot pressing mold can reach more than 100Mpa, and the maximum size reaches Ф800×1000mm or more.
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