how to make silicon nitride igniter

silicon nitride igniter is electrical components used to ignite natural gas for heating applications when activated with 120V. silicon nitride igniter offers more stability by being immune from problems associated with low capability at higher temperatures or short lifespan, unlike their metal counterparts. Advanced material used in some of the toughest working environments around. It’s ideal for use within pumps that may encounter abrasive slurries and acidic borated water environments, making seal face components even more resilient against potential damage.

how to make silicon nitride igniter

Heat Source

Hot surface igniters are made of silicon carbide or silicon nitride and feature ceramic bases to insulate their wire connections, with various shapes like Ms, letters, spirals and cylinders made possible when 80 to 240 volts are applied via their wires. Once hot enough to ignite gas or oil fuel sources, they are also designed to withstand any corrosion caused by either environmental conditions or fuels that corrode these igniters over time.

HSIs are highly sensitive to heat and vibration, and are susceptible to cracking under excessive exposure of either. This leads to failure and decreases its lifespan; hence it is vitally important that an HSI be placed correctly so as to not experience too many vibrations and heat from furnace blower or gas valve operation.

Most field experts concur that one of the main issues with HSIs is when they receive too much voltage when installed into systems running at 120 volts instead of 80. As a result, these HSIs will often fail faster than they should.

ProAire Silicon Nitride Igniters operate at 24V to maximize efficiency and extend lifespan in heating systems, using advanced material engineering and thoughtful design. Engineered for optimal velocity, these ignitors ensure complete combustion of fuel such as natural gas or oil for increased energy savings while protecting system components.

Electrical Connections

silicon nitride igniter is used in many heating systems and are much more durable than metal ignitors, lasting between 3-5 years before beginning to crack, at which time they must be replaced. Common signs of cracked ceramic ignitors include white silica dust around bright spots or an open spark when tested using a multimeter. To minimize damage and avoid costly replacement costs, avoid touching it directly and handling it with your bare hands.

The Ignitor is a heating system component that sends out 24-volt signals to other parts. Its purpose is to ignite fuel within furnaces and prevent them from running out of gas; sometimes even relighting burners if their blower fails. Its location on either the burner unit’s side or through special adapter allows it to connect directly with thermostats.

To create the ignitor, black silicon carbide (SiC) and Er2O3 powder used as a sintering aid are mixed (at compositional proportions outlined in Table 1) under wet conditions for 40 hours before drying into raw material powder. Protective agents composed of Ta, W and Mo metals as well as compounds thereof are then included into this raw material powder so as to not become reduced during hot-press sintering and thus result in no nitrides or silicides being present within sintered bodies.

Igniting Process

silicon nitride igniter offers more durable performance compared to older silicon carbide or metal alloy igniters, which may become damaged through thermal cycling or other environmental conditions. Silicon nitride ceramic igniters are more reliable, being resistant to high temperatures, freezing cold weather or strong vibrations – thus providing longer-lasting operations and greater efficiency for heating systems.

Silicon nitride ceramic igniters heat to their optimal temperatures during ignition, initiating a chemical reaction that ignites gas within the combustion chamber and increasing energy efficiency while decreasing emissions. Furthermore, silicon nitride ceramic heaters are more durable than their counterparts as they can tolerate greater temperature swings and wider operating voltage spectrums without failing.

Spark igniters are essential to any hot-surface gas furnace and must be properly installed so as to create an adequate spark to initiate combustion. There are various configurations of igniters available; therefore, their spark ignition must be configured according to each application.

As well as spark igniters, flame sensors are required to verify that combustion processes are taking place properly. The type of flame sensor used depends on your particular gas appliance model and fuel type used – typically either thermistor or photovoltaic cells will suffice.


silicon nitride igniter contributes to energy efficiency of heating systems through their durability. They heat quickly to high temperatures – often within seconds! – and can maintain this heat over long periods, even with corrosion present.

Before silicon nitride became the go-to ignition material for high-intensity spark ignition (HSIs), they were composed of gray sparkly material resembling artificial whetstones used to sharpen knives. Due to being fragile and often cracked by technicians during service calls, these gray and sparkly igniters often failed to provide heat for users’ units, leading them to call technicians with no heat calls for service calls.

Silicon nitride is significantly more durable than those sparkly metal surfaces; its lifespan has been estimated at three to five years before cracking or failing, which far outstrips that of an HSI made of silicon carbide.

Silicon nitride’s durability enables it to withstand much higher temperatures than other ceramic materials such as zirconium dioxide and hafnium oxide, while also being highly corrosion-resistant, providing protection from gas-fired forced air furnaces and boilers where water circulates through their systems.

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