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Studi sifat bahan PCB Keramik

 

Dengan perkembangan ilmu pengetahuan dan teknologi, papan sirkuit cetak telah menjadi komponen elektronik yang sangat diperlukan, papan sirkuit cetak telah diubah namanya sebagai elektronik substrat anorganik substrate.Traditional untuk Al2O3, dan SiC, Beo dan AlN substrat, bahan-bahan ini dalam konduktivitas termal, lentur kekuatan dan koefisien ekspansi termal memiliki kinerja yang baik, sekarang banyak digunakan dalam industri studi MCM substrate.The dari bahan PCB Keramik adalah mikron Al2O3 dan CaZrO3 sebagai bahan baku utama, menggunakan resistensi tungku sintering silikon karbida, dan menjelajahi kepadatan relatif, dielektrik konstan dan sifat kerugian dielektrik.

Keramik Gambar PCB Dewan

Keramik Bahan PCB

Analisis kepadatan 1.Relative
Keramik PCB analisis Berat jenis relatif
The influence of the relative density of alumina ceramic integrated circuit substrate with different micron Al2O3 and nano CaZrO3 powder was added.By a figure known as the temperature increases, the relative density with the increase of substrate material, temperature of 1100 ℃ maximum.When micron Al2O3 content is 60 wt %, the adding amount of nano ZrO2 is 10 wt %, the relative density of alumina ceramic pcb substrate integrated material relative to other formula is the largest, the sample is relatively dense, is beneficial to integration of alumina ceramics substrate material mechanics performance improvement.

Analisis konstan 2.Dielectric
PCB Bahan Dielektrik analisis konstan keramik
The above is the dielectric constant of the PCB Keramik material with the curve of sintering temperature.It can be seen that as the temperature rises, its dielectric constant increases.When the temperature reached 1100 ℃, the dielectric constant peak.When the addition of micron Al2O3 was changed from 50 wt% to 65 wt %, and the addition of nano-cazro3 was changed from 20 wt% to 5 wt %, the dielectric constant of the alumina integrated electric subgrade plate was first increased and then decreased.When the content of micron Al2O3 was 60 wt% and the content of nano CaZrO3 was 10 wt %, the sample performance was the best.This is because the factors that influence the dielectric constant are multifaceted, as long as the chemical composition of the formulation is involved, the more the alkali metal ion oxide content is, the greater the permittivity is.In addition, the thermal exercise of the ions and dipoles in the process of rising temperature increases, resulting in an increase in the permittivity.

Analisis kehilangan 3.Dielectric
Keramik PCB Lempeng analisis kerugian Dielektrik
The above is the dielectric loss of the ceramic pcb cesubstrate material with the sintering temperature curve.As the temperature increases, the dielectric loss gradually decreases.When the micron Al2O3 in 50 wt % 65 wt % change between nano CaZrO3 between 20 wt % to 5 wt % change, dielectric loss reduced after increased first, when the micron Al2O3 content is 60 wt %, nano CaZrO3 amount to 10 wt %, and when the sintering temperature is 1100 ℃, the dielectric loss value of the minimum sample after sintering.
The dielectric loss of the ceramic pcb material is caused by the internal electron, ion drain and space charge polarization, and the smaller the volume resistivity of the material, the larger the dielectric loss.Of the existence of samples CaZrO3 Ca (superscript 2 +) ions of other low price and tetravalent Zr ions produce depressive effect, make the dielectric loss of samples increased, the Na2O and the existence of K2O, makes the ion K and Na ions as a result of the action of the double effect of alkali, make the network combined with close, so the sample dielectric loss less.

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