Silicon Carbide Ceramic

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Carbide ya silicon ni ubwoko bwa karbide ya synthique hamwe na molekile ya SiC. Iyo imbaraga, silika na karubone mubisanzwe bikozwe mubushyuhe bwo hejuru ya 2000 ° C. Carbide ya Silicon ifite ubucucike bwa 3.18g / cm3, ubukana bwa Mohs bukurikira diyama, na microhardness ya 3300kg / mm3 hagati ya 9.2 na 9.8. Bitewe no gukomera kwinshi no kwihanganira kwambara cyane, ifite ibiranga ubushyuhe bwo hejuru kandi ikoreshwa mubice bitandukanye birwanya kwambara, birwanya ruswa ndetse nubushyuhe bwo hejuru. Nubwoko bushya bwikoranabuhanga rya ceramic.

1 properties Imiterere yimiti.

. Hamwe no kwiyongera kwurwego rwo gukingira, karbide yimbere ya silicon ikomeza okiside, kugirango karibide ya silicon ifite imbaraga zo kurwanya okiside. Iyo ubushyuhe bugeze hejuru ya 1900K (1627 ° C), firime irinda dioxyde de silicon itangira kwangirika, kandi okiside ya karubide ya silicon irushaho gukomera, bityo 1900K nubushyuhe bwakazi bwa karubide ya silicon mukirere cya okiside.

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2 properties Imiterere yumubiri nubukanishi.

. Ingano yubunini hamwe nubunini bwubunini.

. boron nitride na boron karbide.

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3 properties Ibikoresho by'amashanyarazi.

Ingingo Igice Amakuru Amakuru Amakuru Amakuru Amakuru
RBsic (sisic) NBSiC SSiC RSiC OSiC
Ibirimo % 85 76 99 ≥99 ≥90
Ibikoresho bya silicon kubuntu % 15 0 0 0 0
Ubushyuhe bwa serivisi 1380 1450 1650 1620 1400
Ubucucike g / cm ^ 3 3.02 2.75-2.85 3.08-3.16 2.65-2.75 2.75-2.85
Fungura ubwoba % 0 13-15 0 15-18 7-8
Imbaraga zunama 20 ℃ Mpa 250 160 380 100 /
Imbaraga zunama 1200 ℃ Mpa 280 180 400 120 /
Modulus ya elastique 20 ℃ Gpa 330 580 420 240 /
Modulus ya elastique 1200 ℃ Gpa 300 / / 200 /
Amashanyarazi 1200 ℃ W / mk 45 19.6 100-120 36.6 /
Coefficient ya thermalexpansion K ^ -lx10 ^ -8 4.5 4.7 4.1 4.69 /
HV kg / m ^ m2 2115 / 2800 / /
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