Pyrolytic Boron Nitride Heater

At present, conventional insulating materials have disadvantages such as the inability to withstand high temperatures, low purity, gas release at high temperatures, poor toughness, no insulation at high temperatures, and easy corrosion. PBN insulating sheets can solve these problems.

Features:
1. It can withstand up to 2300°C in a vacuum and up to 2700°C in an ammonia atmosphere;
2. High purity, no gas impurities will be released at high temperature (>99.99%);
3. Good toughness;
4. Good high-temperature insulation (volume resistivity 3.11×1011 Ω•cm);
5. Strong chemical inertness, resistance to corrosion by acids, alkalis, salts, and organic solvents;
6. The thermal conductivity in the c direction is low, which can block the heat from being conducted downwards and reduce the heat loss.

Application:
Insulation pads, gaskets, brackets, etc. used in a vacuum, high temperature, MBE equipment, and other fields.

Silicon Nitride Heater

Silicon Nitride Heater has the properties of high-temperature resistance, rapid speed-up, high thermal conductivity, which makes it widely apply for parking heater, heating element for central heating system, spark sensor, etc.

Silicon Nitride Heater Features:

• High-temperature resistance
• Excellent thermal conductivity
• Rapid heating-up speed and high working temperature
• Good startup performance at low temperature, can be start-up at -30℃
• Wide applications: high-speed diesel, high-temperature ignition device, ignition for oil medium, gas, burner, Preheater, etc.

Application:

• Mold heater
• Packaging Machinery
• Tobacco equipment
• Industrial equipment heating
• Burner ignition system
• Petrochemical industry
• Various high-temperature ignition devices

Ceramic Heater – The Secret of Keeping The Intelligent Toilet Lid Warm

When you are in Japan, you must know that the intelligent toilet is trendy, because there is one unforgettable and very human function which is the heating function. Today I will tell you the secret of keeping the intelligent toilet lid warm. Actually, it is a ceramic heater.

At present, the heating function of the intelligent toilet lid is the following: 1. Warm buttock washing function, female washing function and reciprocating cleaning function all need water heating; 2 toilet seat heating function; 3. Realise the purpose of paperless warm air drying for toilet, and the realisation of these functions requires the support of heating components.

1. The current heating mode of intelligent toilet is two kinds. One is thermal storage type another is the instantaneous water heater.
The thermal storage type is the most mainstream way of heating in an early time. It is similar to the water heater. In the intelligent toilet back, there is a storage tank, which will deposit a certain amount of water, after the heating, the water temperature will drop to natural, and when it drops to a specific temperature, the seat will heat again at a constant temperature. Because of the hot water reserves and heating speed is limited, users will feel the water temperature is not stable. And instantaneous water heater type is to heat the water flow direction, so it can avoid breeding bacteria and harm the water quality due to long-term storage of water, and more healthy.

2. The heating body of the core component of the intelligent toilet generally adopts a ceramic heating body, and the preparation cost is also relatively high. At present, the common ceramic heating elements include MCH ceramic heating element and PTC ceramic heating element.

PTC ceramic heating body: ceramic PTC is composed of barium titanate (or strontium, lead) as the main component, with a small amount of rare earth (Y, Nb, Bi, Sb), acceptor (Mn, Fe) elements, as well as glass (silica, alumina) and other additives, sintered semiconductor ceramics. PTC heating element is using PTC ceramic heating element and aluminium tube. This type of PTC heating element has the advantages of small thermal resistance and high heat exchange efficiency. The outstanding characteristic lies in the safety performance, under any application will not produce such as the electric heat pipe heater surface “redness” phenomenon, thus causing scald, fire, and other safety hazards.

MCH ceramic heating element: MCH is the abbreviation of Metal Ceramics Heater, which means cermet heating element. The MCH ceramic heating element is by sintering the electric heating element and the ceramic at a high temperature to form a ceramic heating element.

Generally, metal tungsten or molybdenum-manganese paste is printed on the ceramic casting body, laminated by hot pressing, and then protected by a hydrogen atmosphere at 1600°C. The ceramic and metal sinter together to form a ceramic heating body. The advantages of the MCH heater are corrosion resistance, high-temperature resistance, long life, high energy efficiency, uniform temperature, good thermal conductivity, and fast thermal compensation Environmental requirements. And it does not contain harmful substances, comply with EU RoHS and other environmental conditions. MCH ceramic heating element is a new type of high-efficiency ecological protection and energy-saving ceramic heating element. Compared with the PTC ceramic heating element, it can save 20-30% of electricity under the same heating effect, and there is no massive problem of power attenuation of PTC for a long time.

There are mainly two types of ceramics used in MCH ceramic heating elements: alumina ceramics and silicon nitride ceramics. These two ceramic materials are the most widely used in the field of electric heating elements. Both have excellent high temperature and acid and alkali resistance. However, silicon nitride ceramics have greater hardness and higher production costs than alumina ceramics. Therefore, the ceramic heating bodies currently on the market are mainly alumina, including the alumina ceramic materials, including the template drawings attached to the context.

How to use ceramic cavity reflectors for Nd:YAG lasers?

The ceramic reflectors used in Nd:YAG lasers are with reflection 97% at wavelength 600-1000nm and 95% reflection at wavelength 400-1200nm. Today let’s talk about the cautions when you use ceramic reflectors.

• Do not put high pressure on it during transportation. When the size is not suitable for the pump chamber, don’t put the ceramic reflectors into the chamber by force.
• Half glazing ceramic reflectors must be sealed with the chamber in order to avoid cooling liquid indrawing. Or the reflection may go down quickly.
• Do not scratch the reflector during assembly and maintenance, or the reflection will go down quickly.
• Please choose correct cooling system line & material of equipment in short-wave(eg.755nm) high-temperature system, or the metallic oxide which is dissociated from them will pollute the ceramic reflectors.

The main application of aluminum nitride ceramics

Aluminum nitride is a new type of ceramic material with excellent comprehensive performance. It has excellent thermal conductivity and thermal shock resistance, reliable electrical insulation.

Because of the liquid phase sintering and no second phase at the grain boundary, the crystal structure is very dense and has good Resistance to plasma corrosion. A series of excellent characteristics such as low dielectric constant and dielectric loss, non-toxic and thermal expansion coefficient matching silicon, are considered to be ideal materials for a new generation of highly integrated semiconductor substrates and electronic device packaging and are widely used at home and abroad attention.

Prime Features:

• High thermal conductivity
• Excellent thermal shock resistance
• Excellent insulation, >15KV / mm
• Plasma etching resistance
• Good shock resistance
• Non-toxic
• Excellent mechanical properties

Application:

• IC packaging IC
• Components for semiconductor equipment
• Thermal module substrate
• High power transistor module substrate
• High-frequency device substrate
• Exothermic insulation board for Thyristor Modules
• Semiconductor laser, the fixed substrate for light-emitting diode(LED)
• Hybrid integrated module, ignition device module

INNOVACERA has ALN substrate, ALN metalized part, ALN structural parts, dry pressed tablets, if you would like to know more, pls feel free to contact us.