Sifooyinka carbide-ka silicon ee dib loo warshadeeyay
Carbohydrate silicon ah oo dib loo warshadeeyay (R-SiC) waa walax waxqabad sare leh oo leh adkeysi ka dambeeya dheemanka oo keliya, kaas oo lagu sameeyo heerkul sare oo ka sarreeya 2000℃. Waxay haysaa sifooyin badan oo aad u fiican oo SiC ah, sida xoogga heerkulka sare, iska caabbinta daxalka oo xooggan, iska caabbinta oksaydhka oo aad u fiican, iska caabbinta shoogga kulaylka oo wanaagsan iyo wixii la mid ah.
● Sifooyin farsamo oo heer sare ah. Kaarboohaydraytka silicon ee dib loo warshadeeyay wuxuu leeyahay xoog iyo adkaansho ka sarreeya faybarka kaarboonka, iska caabinta saameynta sare leh, wuxuu ciyaari karaa waxqabad wanaagsan jawiga heerkulka daran, wuxuu ciyaari karaa waxqabad dheelitirnaan oo ka wanaagsan xaalado kala duwan. Intaa waxaa dheer, wuxuu sidoo kale leeyahay dabacsanaan wanaagsan mana si fudud u dhaawaco fidinta iyo foorarsiga, taas oo si weyn u wanaajisa waxqabadkeeda.
● Iska caabinta daxalka oo sareysa. Kaarboohaydraytka silicon ee dib loo warshadeeyay wuxuu leeyahay iska caabin daxalka oo sareeya oo u adkaysta noocyo kala duwan oo warbaahin ah, wuxuu ka hortagi karaa nabaad-guurka noocyada kala duwan ee warbaahinta daxalka, wuxuu ilaalin karaa sifooyinkiisa farsamada muddo dheer, wuxuu leeyahay dhegdheg xooggan, si uu u yeesho cimri dheer oo adeeg ah. Intaa waxaa dheer, wuxuu sidoo kale leeyahay xasillooni kuleyl oo wanaagsan, wuxuu la qabsan karaa noocyo kala duwan oo isbeddel heerkul ah, wuxuu hagaajin karaa saameyntiisa codsiga.
● Sinterization-ku ma yaraado. Maadaama habka sintering-ku uusan yaraanayn, ma jiro cadaadis haraadi ah oo sababi doona isbeddel ama dildilaac ku yimaada badeecada, waxaana la diyaarin karaa qaybo leh qaabab adag iyo saxnaan sare.
| 重结晶碳化硅物理特性 Sifooyinka Jireed ee Silicon Carbide-ka Dib loo Dib-u-habeeyey | |
| 性质 / Hantida | 典型数值 / Qiimaha Caadiga ah |
| 使用温度/ Heerkulka shaqada (°C) | 1600°C (oo leh ogsijiin), 1700°C (deegaan yareynaya) |
| SiC含量/ Waxyaabaha ku jira SiC | > 99.96% |
| 自由Si含量/ Waxyaabaha bilaashka ah ee Si | < 0.1% |
| 体积密度/Cufnaanta badan | 2.60-2.70 g/cm3 |
| 气孔率/ Daloolo muuqata | < 16% |
| 抗压强度/ Xoogga cadaadiska | > 600MPA |
| 常温抗弯强度/Xoogga laabashada qabow | 80-90 MPa (20°C) |
| 高温抗弯强度Xoogga foorarsiga kulul | 90-100 MPa (1400°C) |
| 热膨胀系数/ Ballaarinta kulaylka @1500°C | 4.70 10-6/°C |
| 导热系数/Qaboojinta kulaylka @1200°C | 23W/m•K |
| 杨氏模量/ Modulus-ka Laastikada ah | 240 GPA |
| 抗热震性/ Iska caabbinta shoogga kulaylka | Aad u wanaagsan |
Tamarta VET waa Shaki kuma jiro insoo saaraha dhabta ah ee alaabada graphite iyo silicon carbide ee loo habeeyay oo leh dahaarka CVD,bixin karaakala duwanqaybo loo habeeyey warshadaha semiconductor iyo photovoltaic. OKooxda farsamada ee aad ka tirsan tahay waxay ka timaadaa hay'adaha cilmi-baarista ee ugu sarreeya gudaha, waxayna bixin karaan xalal agab xirfadeed oo dheeraad ahadiga.
Waxaan si joogto ah u horumarinnaa habab horumarsan si aan u bixinno agab horumarsan,iyoWaxaan soo saarnay tiknoolajiyad gaar ah oo shati leh, taas oo ka dhigi karta isku xirka u dhexeeya dahaarka iyo substrate-ka mid adag oo aan u nuglaan karin kala-goynta.
| CVD SiC薄膜基本物理性能 Sifooyinka aasaasiga ah ee jireed ee CVD SiCdahaarka | |
| 性质 / Hantida | 典型数值 / Qiimaha Caadiga ah |
| 晶体结构 / Qaab-dhismeedka Crystal | Marxaladda FCC β多晶,主要为(111) 取向 |
| 密度 / Cufnaanta | 3.21 g/cm³ |
| 硬度 / Adkaanta | 2500 维氏硬度(500g oo culeys ah |
| 晶粒大小 / Xaddiga Badarka | 2 ~ 10μm |
| 纯度 / Nadiifinta Kiimikada | 99.99995% |
| 热容 / Awoodda Kulaylka | 640 J·kg-1·K-1 |
| 升华温度 / Heerkulka Sublimation | 2700℃ |
| 抗弯强度 / Xoogga Laablaabashada | 415 MPa RT 4-dhibcood |
| 杨氏模量 / Modulus-ka Young | 430 GPA 4pt laab, 1300℃ |
| 导热系数 / ThermalGudbinta | 300W·m-1·K-1 |
| 热膨胀系数 / Ballaarinta Kulaylka (CTE) | 4.5 × 10-6K-1 |
Si diirran ayaan kuugu soo dhaweyneynaa inaad booqato warshaddayada, aan yeelano dood dheeraad ah!
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