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Plate-type Heating Core For NTK Oxygen Sensor

GREENWWAY is a professional leader China GRWAY® Plate-type Heating Core For NTK Oxygen Sensor manufacturer with high quality and reasonable price. Welcome to contact us.

Model:NTK

Product Description

Plate-Type Heating Core for NTK oxygen sensor

GRWAY® Plate-Type Heating Core for NTK oxygen sensor are produced by implementing ceramic lamination processes. Due to the compactness, high power and rapid heating speed .Ceramic Heater can provide higher reliability than ever before. Mainly applications include use as innovative types of heaters in the automotive, medical and semiconductor industries.

Process of Plate-Type Heating Core for NTK oxygen sensor

1.Product matrix material use white alumina ceramic

a) Density≥3.94 g/cm3；

b) Strength＞500 MPa。

2.Electrolyte material use YSZ electrolyte ceramic

a) Density≥5.75 g/cm3；

b) Strength＞400 MPa；

c) Aging test: 230℃×50 h。

3.Electrodes, heaters, leads, pads all use Pt materials (Choose different Pt content material according to the function)

Engine Test

After the assembly of the product, then test the leak rate under the temperature of 25℃±10℃and the air pressure of 3.4 bar, and the engine bench test is carried out under the condition that the leakage rate is less than 0.2 cm3 / min.

Durable Pressure Resistance

Heater 1100℃thermal cycling：20 V，3 min on，1 min off，＞4500 times。

Heater Pressure：32 V，500 ms，10 time）。

Plate-Type Heating Core for NTK oxygen sensor Structure

The ceramic core B structure as show in Figure 1, the ceramic core includes five layers, and they are protective layer, electrolyte layer, air layer, base layer and heating layer. The protective layer system includes electrode pad, porous protective layer and aluminum oxide layer. The electrolyte layer system includes inner / outer electrode, YSZ electrolyte layer. And the airway layer consists of airway, alumina layer. The base layer has a number of alumina layers (Can adjust based on customer requirements on the product thickness). The heater layer system includes heater, heater pad and oxidation Aluminum layer.

Product Specification

Item	Environmental Requirements	Standard Values	Test Method
Activation Time	Temperature: 23℃±3℃	≤5 s	The voltage of 450 mV was loaded to both ends of the electrode through a 1 MΩresistor. And record the output voltage when 13.5 V was loaded. Test the time when the output voltage dropped to 300 mV by the acquisition card.

Item	Environmental Requirements	Standard Values	Test Method
Electrical Signal Test	No wind environment	Internal and external Electrode Current＞100μA	Under air atmosphere, a DC source was used to charge 13.5 V voltage to the heater, and 450 mV voltage was loaded between the internal and external electrodes (the internal electrode was connected to the positive electrode), and observe the current value between the internal and external electrodes.
Maximum Temperature	No wind environment	770℃±50℃	The maximum temperature of the heater at steady state was measured by a thermal imager.
350℃Heating up Time	Temperature:23℃±3℃	≤7 s	Test the time needed for the heater heating from room temperature to 350℃by thermal imager.
Cracking Test	None	No Cracks	Test the porcelain core crack situation through the magenta.
Exterior	None	The surface without cracks, no bubbles, no cracks and other defects	Visual inspection
Dimensions	None	（58.6 mm±0.5 mm）×（4.4 mm±0.1 mm）×（1.25 mm±0.1 mm）	Caliper measurement