High-power silicon nitride ceramic heating sheet and fabrication method for hard inner part and flexible outer part thereof
A silicon nitride ceramic, high-power technology, applied in the field of silicon nitride ceramics, can solve the problems of difficult to weld lead wires, unstable power, uneven heating, etc., and achieve the effects of accurate resistance, firm lead, and uniform heating
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[0052] Example one, cigarette lighter, specification 90X5X4mm, 500 watts, 1100°C, processed to 1100°C in 10 seconds.
[0053] 1. Insulating ceramic material: silicon nitride Si 3 N 4 , 94%; Ytterbium oxide Y 2 O 3 , 1-3%; alumina Al 2 O 3 , 0.5-1.5%; magnesium oxide MgO, 0.2-0.5%; lanthanum trioxide La 2 O 3 , 0.5-1%; hafnium oxide HfO 2 , 0.2-0.5%, aluminum nitride AlN, 0.5-2%, the weight of all components is 100%.
[0054] 2. Heating ceramic material: silicon nitride Si 3 N 4 , 45%, solid solution of titanium carbide and titanium nitride, Ti (C, N), 26-35%; the weight ratio of titanium carbide and titanium nitride in the solid solution is 4:6; molybdenum powder Mo, 0.5-3%; Nano nickel Ni, 0.5-1.0%; niobium carbide CHNb, 0.2%; whisker silicon carbide SiC, 0.2-0.5%; molybdenum silicide MoSi 2 , 0.1-0.2%; silicon oxide SiO 2 , 0.1-0.2%; alumina Al 2 O 3 , 5-10%, the weight of all components is 100%.
[0055] 3. Welding ceramic material: titanium carbide TiC, 60%; silicon nitride S...
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[0064] Example 2: Drying sheet, specification 1200X12X4mm, 600 watts, processed to 258°C in 2 seconds, durability 2 years. Among the weight ratios of the three ceramic materials,
[0065] 1. Insulating ceramic material: silicon nitride Si 3 N 4 ,93%; Ytterbium oxide Y 2 O 3 , 1-3%; alumina Al 2 O 3 , 0.5-1.5%; magnesium oxide MgO, 0.2-0.5%; lanthanum trioxide La 2 O 3 , 0.5-1%; hafnium oxide HfO 2 , 0.2-0.5%, aluminum nitride AlN, 0.5-2%, the weight of all components is 100%.
[0066] 2. Heating ceramic material: silicon nitride Si 3 N 4 , 45%, solid solution of titanium carbide and titanium nitride, Ti (C, N), 26-35%; the weight ratio of titanium carbide and titanium nitride in the solid solution is 4:6; molybdenum powder Mo, 0.5-3%; Nano nickel Ni, 0.5-1.0%; niobium carbide CHNb, 0.2%; whisker silicon carbide SiC, 0.2-0.5%; molybdenum silicide MoSi 2 , 0.1-0.2%; silicon oxide SiO 2 , 0.1-0.2%; alumina Al 2 O 3 , 5-10%, the weight of all components is 100%.
[0067] 3. Welding ...
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[0069] Example three, heating plate, specification 150X25X4mm, 800 watts, heating to 1000°C in 10 seconds.
[0070] Among the weight ratios of the three ceramic materials,
[0071] 1. Insulating ceramic material: silicon nitride Si 3 N 4 , 91.5%; Ytterbium oxide Y 2 O 3 , 1-3%; alumina Al 2 O 3 , 0.5-1.5%; magnesium oxide MgO, 0.2-0.5%; lanthanum trioxide La 2 O 3 , 0.5-1%; hafnium oxide HfO 2 , 0.2-0.5%, aluminum nitride AlN, 0.5-2%, the weight of all components is 100%.
[0072] 2. Heating ceramic material: silicon nitride Si 3 N 4 , 45%, solid solution of titanium carbide and titanium nitride, Ti (C, N), 26-35%; the weight ratio of titanium carbide and titanium nitride in the solid solution is 4:6; molybdenum powder Mo, 0.5-3%; Nano nickel Ni, 0.5-1.0%; niobium carbide CHNb, 0.2%; whisker silicon carbide SiC, 0.2-0.5%; molybdenum silicide MoSi 2 , 0.1-0.2%; silicon oxide SiO 2 , 0.1-0.2%; alumina Al 2 O 3 , 5-10%, the weight of all components is 100%.
[0073] 3. Welding cerami...
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