Badanaa ku jihaysan macmiilka, waana yoolkayaga kama dambaysta ah si aan u noqonno kaliya malaha ugu sumcadda badan, la aamini karo iyo bixiyaha daacadda ah, laakiin sidoo kale lamaanaha macaamiishayada Qiimaha ugu hooseeya ee Shiinaha 1200c Plasma Heerarka Uumiga KiimikadaPecvdVacuum Funace, Si aad wax badan uga ogaato waxa aanu kuu qaban karno, nala soo xidhiidh wakhti kasta. Waxaan rajeyneynaa inaan adiga kula sameyno xiriir ganacsi oo wanaagsan oo waqti dheer ah.
Inta badan waxay u jeedaan macmiilka, waana yoolkayaga ugu dambeeya si aan u noqono kaliya malaha ugu sumcadda badan, la aamini karo iyo bixiyaha daacadda ah, laakiin sidoo kale lamaanaha macaamiishayadaDhigista Uumiga Kiimikada ee Plasma-ka Shiinaha oo La Wanaajiyey, Pecvd, Qalabkayaga horumarsan, maaraynta tayada wanaagsan, cilmi-baarista iyo awoodda horumarinta ayaa ka dhigaysa qiimahayaga. Qiimaha aanu bixinayna waxa laga yaabaa in aanu ahayn kan ugu hooseeya, laakiin waxa aanu dammaanad qaadaynaa in ay gabi ahaanba tahay mid tartan ah! Ku soo dhawoow inaad isla markiiba nala soo xidhiidho xidhiidhka ganacsi ee mustaqbalka iyo guusha wadaagga ah!
Kaarboon / kaarboon isku-dar ah(ka dib loo tixraaco "C/C ama CFC”) waa nooc ka mid ah walxaha isku dhafan kaas oo ku salaysan kaarboon oo lagu xoojiyay fiber carbon iyo alaabteeda (kaarboon fiber preform). Waxay leedahay labadaba firfircoonida kaarboonka iyo xoogga sare ee fiber carbon. Waxay leedahay sifooyin farsamo oo wanaagsan, caabbinta kulaylka, iska caabinta daxalka, qoyaanka xoqida iyo sifooyinka kulaylka iyo korantada
CVD-SiCdaahan wuxuu leeyahay sifooyinka qaab-dhismeedka lebis, wax is haysta, iska caabin heerkulka sare, iska caabin oksaydhka, daahirsanaan sare, caabbinta acid & alkali iyo reagent organic, leh guryaha deggan iyo kiimikaad.
Marka la barbar dhigo qalabka garaafyada sare ee nadiifka ah, graphite wuxuu bilaabaa inuu oxidize at 400C, taas oo keeni doonta luminta budada sababtoo ah oksaydheynta, taasoo keentay wasakhowga deegaanka ee aaladaha durugsan iyo qolalka faakuumka, iyo kordhinta wasakhda deegaanka saafiga ah.
Si kastaba ha noqotee, daahan SiC wuxuu ilaalin karaa xasilloonida jirka iyo kiimikaad ee 1600 darajo, Waxaa si weyn loogu isticmaalaa warshadaha casriga ah, gaar ahaan warshadaha semiconductor.
Shirkadeena waxay bixisaa adeegyada habka daahan SiC ee habka CVD ee dusha sare ee graphite, ceramics iyo alaabta kale, si gaasaska gaarka ah ee ay ku jiraan kaarboon iyo silikoon ay uga falceliyaan heerkulka sare si ay u helaan nadiifnimada sare ee SiC molecules, molecules deposited on the dusha alaabta dahaarka ah, samaynta lakabka ilaalinta SIC. SIC-ga la sameeyay waxay si adag ugu xidhan tahay saldhigga garaafka, iyadoo siinaya saldhigga garaafyada sifooyin gaar ah, sidaas darteed samaynta dusha sare ee garaafka, Porosity-free, caabbinta heerkulka sare, caabbinta daxalka iyo caabbinta oksaydhka.
Tilmaamaha ugu muhiimsan:
1. Iska caabbinta oksaydhka heerkulka sare:
caabbinta oksaydhisku weli aad bay u wanaagsan tahay marka heerkulku gaadho 1600 C.
2. Nadiifin sare: oo ay samaysay uumiga kiimikaad ee hoos yimaada xaalada koloriinaynta heerkulka sare.
3. Iska caabinta nabaadguurka: adkaanta sare, dusha sare, qaybo yaryar.
4. Iska caabinta daxalka: acid, alkali, milix iyo reagents organic.
Tilmaamaha ugu Muhiimsan ee Dahaarka CVD-SIC:
| SiC-CVD | ||
| Cufnaanta | (g/cc)
| 3.21 |
| Xoog dabacsanaan | (Mpa)
| 470 |
| Balaadhinta kulaylka | (10-6/K) | 4
|
| Dhaqdhaqaaqa kulaylka | (W/mK) | 300
|
