Trimethylaluminium (TMAI)
Trimethylalumine (TMAI)
| Erayo isku mid ah | Trimethylaluminum, Aluminium Trimethyl, Aluminium Trimethanide, TMA, TMAL, AlMe3, Ziegler-Natta Catalyst, Trimethyl-, Trimethylalane. |
| Lambarka Lambarka | 75-24-1 |
| Qaacidada kiimikada | C6H18Al2 |
| Cufka gawska | 144.17 g/mol, 72.09 g/mol (C3H9Al) |
| Muuqaalka | Dareere aan midab lahayn |
| Cufnaanta | 0.752 g/cm3 |
| Barta dhalaalaysa | 15℃ (59 ℉; 288K) |
| Barta karkarinta | 125--130℃ (257--266 ℉, 398--403K) |
| Milmida biyaha | Falcelinta |
| Cadaadiska uumiga | 1.2 kPa (20 ℃), 9.24 kPa (60 ℃) |
| Viscosity | 1.12 cP (20 ℃), 0.9 cP (30 ℃) |
Trimethylaluminium (TMAl), oo ah isha birta-organic (MO), ayaa si weyn loogu isticmaalaa warshadaha semiconductor-ka waxayna u adeegtaa sidii hordhac muhiim ah oo loogu talagalay dhigista lakabka atomiga (ALD), dhigista uumiga kiimikada (CVD), iyo dhigista uumiga kiimikada birta-organic (MOCVD). Waxaa loo isticmaalaa in lagu diyaariyo filimada aluminiumka ka kooban ee saafiga sare leh, sida aluminium oksaydh iyo aluminium nitride. Intaa waxaa dheer, TMMal waxay u aragtaa codsi ballaaran sidii kiciye iyo wakiilkeeda kaaliyaha ah ee isku-darka dabiiciga ah iyo falcelinta polymerization.
Trimethylaluminum (TMAI) waxay u dhaqantaa sidii hordhac u ah kaydinta oksaydhka aluminiumka waxayna u shaqaysaa sidii kataliye Ziegler-Natta ah. Sidoo kale waa hormuudka aluminiumka ee ugu badan ee loo isticmaalo soo saarista epitaxy-ga uumiga birta-organic (MOVPE). Intaa waxaa dheer, TMAI waxay u adeegtaa sidii wakiil methylation ah waxaana si joogto ah looga sii daayaa gantaalada dhawaaqa leh iyadoo loo adeegsanayo raad-raaca barashada qaababka dabaysha jawiga sare.
Qeexitaanka shirkadda ee 99.9999% Trimethylaluminum - Silicon hooseeya iyo oksijiin hooseeya (6N TAMI-Si hooseeya iyo Ox hooseeya)
| Walax | Natiijo | Faahfaahinta | Walax | Natiijo | Faahfaahinta | Walax | Natiijo | Faahfaahinta |
| Ag | ND | <0.03 | Cr | ND | <0.02 | S | ND | <0.05 |
| As | ND | <0.03 | Cu | ND | <0.02 | Sb | ND | <0.05 |
| Au | ND | <0.02 | Fe | ND | <0.04 | Si | ND | ≤0.003 |
| B | ND | <0.03 | Ge | ND | <0.05 | Sn | ND | <0.05 |
| Ba | ND | <0.02 | Hg | ND | <0.03 | Sr | ND | <0.03 |
| Be | ND | <0.02 | La | ND | <0.02 | Ti | ND | <0.05 |
| Bi | ND | <0.03 | Mg | ND | <0.02 | V | ND | <0.03 |
| Ca | ND | <0.03 | Mn | ND | <0.03 | Zn | ND | <0.05 |
| Cd | ND | <0.02 | Ni | ND | <0.03 | |||
| Co | ND | <0.02 | Pb | ND | <0.03 |
Fiiro gaar ah:
Ka sarreeya dhammaan qiimaha PPM miisaanka birta, iyo ND = lama ogaan
Habka Falanqaynta: ICP-OES/ICP-MS
Natiijooyinka FT-NMR (LOD ee FT-NMR wasakhda dabiiciga ah iyo tan oksijiinta leh waa 0.1ppm):
Dammaanadda ogsijiinta <0.2 ppm (Waxaa lagu cabiray FT-NMR)
1. Lama helin wax wasakh ah oo dabiici ah
2. Lama helin wax wasakh ah oo oksijiin leh
Maxaa loo isticmaalaa Trimethylaluminum (TMAI)?
Trimethylaluminium (TMA)- Codsiyada iyo Isticmaalka
Trimethylaluminum (TMA) waa isku-dhis organoaluminum ah oo aad u saafi ah oo u adeega sidii horudhac muhiim ah qaar ka mid ah qaybaha wax soo saarka ee ugu horumarsan. Falcelinta gaarka ah iyo cadaadiska uumiga ayaa ka dhigaya agabka la door bidayo in lagu kaydiyo filimada saxda ah ee aluminiumka ku jira ee elektaroonigga iyo tiknoolajiyada tamarta, iyo sidoo kale qayb aasaasi ah oo ku jirta wax soo saarka polyolefin.
TMA-gayaga waxaa loo sameeyay heerarka ugu adag ee daahirnimada, iyadoo si adag loo xakameynayo wasakhda asaasiga ah, kuwa oksijiinta leh, iyo kuwa dabiiciga ah si loo hubiyo waxqabadka ugu wanaagsan ee codsiyadaada ugu baahida badan.
Codsiyada Aasaasiga ah iyo Warshadaha:
1. Samaynta Semiconductor & Microelectronics
Warshadaha semiconductor-ka, TMA waa lama huraan si loo soo saaro filimaan khafiif ah oo leh saxnaan atom ah.
* Dielectrics-ka Sare-k: Waxaa loo isticmaalaa Kaydinta Lakabka Atomiga (ALD) iyo Kaydinta Uumiga Kiimikada (CVD) si loo koriyo filimaan khafiif ah oo aan lahayn godad biin ah oo aluminium oksaydh ah (Al₂O₃), kuwaas oo u adeega sida dielectrics-ka albaabka sare-k ee transistor-yada horumarsan iyo aaladaha xusuusta.
* Semiconductors-ka isku dhafan: Isha aluminiumka ee la doorbidayo ee Metalorganic Vapor Phase Epitaxy (MOVPE) si loo kobciyo semiconductors-ka isku dhafan ee III-V ee waxqabadka sare leh. Agabkani waa lama huraan:
* Elektaroonikada Soo noqnoqoshada Sare leh: (tusaale ahaan, AlGaAs, AlInGaP)
* Optoelectronics: (tusaale ahaan, AlGaN, AlInGaN)
2. Tamarta Nadiifka ah & Foltalooyinka
TMA waxay suurtogal ka dhigaysaa hufnaan iyo cimri dherer sare oo ku saabsan teknoolojiyada tamarta qorraxda.
* Lakabyada Gudbinta Dusha Sare: Lagu kaydiyay ALD ama Plasma-Enhanced CVD (PECVD), filimada aluminium oxide (Al₂O₃) ee ka socda TMA waxay bixiyaan marin-habaabin dusha sare oo heer sare ah oo loogu talagalay unugyada qorraxda ee silicon crystalline. Tani waxay si weyn u yareysaa isku-darka sideyaasha dallacaadda, taasoo horseedaysa guulo muhiim ah oo ku yimaada hufnaanta beddelka unugyada iyo xasilloonida muddada dheer.
3. Iftiinka iyo Bandhigga Sare (LED)
Soo saarista nalalka LED-yada dhalaalaya oo tamarta ku shaqeeya waxay ku tiirsan yihiin TMA saafi ah oo sare.
* LED Epitaxy: Waxay u adeegtaa sidii horudhaca aluminium ee falgalayaasha MOVPE si ay u koraan lakabyada firfircoon (tusaale ahaan, AlGaN) ee LED-yada buluugga ah, cagaarka ah, iyo ultraviolet-ka.
* Qalabka oo la isku halleyn karo: Waxaa loo isticmaalaa in lagu keydiyo filimaanta aluminium oksaydh ama aluminium nitride oo ilaaliya oo kor u qaada hufnaanta soo saarista indhaha isla markaana dheereeya cimriga hawlgalka aaladaha LED-ka.
4. Wax soo saarka Warshadaha iyo Polymer-ka
Muhiimadda warshadaha ee TMA waxay ku saleysan tahay doorkeeda ku aaddan katalisnimada.
* Katalisyada Polyolefin: Waa agabka ugu horreeya ee lagu bilaabo isku-darka Methylaluminoxane (MAO), oo ah katalis muhiim u ah nidaamyada katalisyada Ziegler-Natta iyo metallocene. Nidaamyadani waxay soo saaraan inta badan balaastikada polyethylene iyo polypropylene ee adduunka.
Astaamaha Muhiimka ah & Faa'iidooyinka:
* Nadiifin Aad u Sareysa: Si taxaddar leh loo xakameeyay si loo yareeyo wasakhda wax u dhimaysa waxqabadka elektaroonigga ah iyo dhaqdhaqaaqa kicinta.
* Horudhac Sare: Waxay bixisaa isbeddel aad u wanaagsan, xasillooni kuleyl, iyo astaamo nadiif ah oo loogu talagalay kaydinta filimka tayada sare leh.
* Heerka Warshadaha: Ilaha aluminiumka ee la aasaasay oo lagu kalsoon yahay ee loogu talagalay hababka MOVPE, ALD, iyo CVD ee ku baahsan xarumaha cilmi-baarista iyo horumarinta caalamiga ah.
* Aasaaska Balaastikada: Waa walax ceeriin ah oo muhiim ah oo suurta gelinaysa soo saarista polymers-ka polyolefin ee kala duwan oo lagama maarmaan ah.
Afeef: Trimethylaluminum waa walax pyrophoric iyo qoyaan-xasaasi ah oo u baahan hab-raacyo gaar ah oo lagu maareeyo iyo hab-raacyo badbaado. Macluumaadka la bixiyay waa ujeeddooyin sharraxaad ah. Waa mas'uuliyadda isticmaalaha inuu u maareeyo agabkan iyadoo la raacayo dhammaan tilmaamaha badbaadada ee khuseeya iyo inuu go'aamiyo ku habboonaanshihiisa codsi gaar ah.
