1. Fa'amatalaga Fa'amatalaga ma Mataupu Faavae o le Silicon Carbide
1.1 Polymorphism ma Atomic Bonding i SiC
(Silicon Carbide Papatusi Ceramic)
Silicon carbide (SiC) o se fa'aputu sima covalent e faia i le silikoni ma carbon atoms i le a 1:1 fua faatatau stoichiometric, iloga i lona polymorphism ofoofogia– ua uma 250 polytypes lauiloa– fefa'asoaa'i fa'atasi uma so'o feso'ota'iga fa'atonuga malosi ae e fesuisuia'i i fa'aputuga fa'asologa o si-C bilayers.
O se tasi o polytypes sili ona talafeagai faʻatekonolosi o le 3C-SiC (kupita zinc blende fausaga), ma ituaiga hexagonal 4H-SiC ma le 6H-SiC, o lo'o fa'aalia e ta'itasi ni suiga fa'alelei i va o fusi, fetuutuunai faaeletonika, ma le fe'avea'i vevela e a'afia ai lo latou fa'aogaina mo fa'aoga fa'apitoa.
O le faigata o le Si– C noataga, fa'atasi ai ma se mana fa'amau fa'atasi 318 kJ/mol, faʻavaeina le mausali tulaga ese a SiC (Mohs malosi o le 9– 9.5), maualuga liusuavai vaega (~ 2700 °C), ma le tetee atu i le faaleagaina o vailaau ma le te'i vevela.
I ipu sima, o le polytype e masani ona filifilia e faʻatatau i le faʻaaogaina: 6O le H-SiC e manumalo i faʻataʻitaʻiga fausaga ona o le faigofie o le faʻapipiʻiina, a'o 4H-SiC e pule i mea fa'aeletonika maualuga mo lona fa'apitoa tau fe'avea'i fe'avea'i.
O le fa'alava tele (2.9– 3.3 eV fa'alagolago ile polytype) faia foi SiC o se insulator eletise sili ona lelei i lona tulaga mama, e ui lava e mafai ona doped e galue o se semiconductor i meafaigaluega faaeletonika faapitoa.
1.2 Fa'ameamea laiti ma le tulaga mama i totonu o Papatusi Sima
Ole lelei ole silicon carbide ceramic plates e matua fa'alagolago ile microstructural uiga e pei ole fua ole saito., mafiafia, tulaga tutusa, ma le va'aia o vaega lona lua po'o le mama.
O papatusi maualuga e masani lava ona gaosia mai le submicron poʻo le nanoscale SiC paʻu e ala i auala faʻapipiʻi, mafua ai fatu lelei, microstructures mafiafia atoatoa e sili ona lelei masini ma conductivity vevela.
O mea filogia e pei ole kaponi fa'afetai, silika (SiO ₂), po'o le sintering fesoasoani pei o le boron po'o le alumini e tatau ona fa'aeteete lelei, aua e mafai ona latou faia ata tifaga intergranular e faʻaitiitia ai le malosi o le vevela ma le faʻamaʻiina o le faʻamaʻi.
Porosity totoe, e oo lava i tulaga maualalo (
Advanced Ceramics na faavaeina ia Oketopa 17, 2012, o se pisinisi maualuga-tech tuuto atu i le suesuega ma atinae, gaosiga, faiga, fa'atauga ma 'au'aunaga fa'apitoa o mea tau sima e pei ole Silicon Carbide Ceramic Plates. O a matou oloa e aofia ai ae le gata i Boron Carbide Ceramic Products, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, ma isi. Afai e te fiafia, faamolemole lagona le saoloto e faafesootai matou.
Fa'ailoga: ipu carbide silikon,ipu carbide,laupepa silikoni carbide
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