Kawhata me te paninga TaC

I. Tukatuka tawhā torotoro

1. Pūnaha TaCl5-C3H6-H2-Ar

2. Te paemahana waipara:

E ai ki te tauira thermodynamic, ka tatauhia ka nui ake te pāmahana i te 1273K, he iti rawa te kaha kore o te Gibbs o te tauhohenga, a, he ahua oti te tauhohenga. Ko te tauhohenga KP he tino nui ki te 1273K me te piki tere ki te pāmahana, me te tere o te tipu ki te 1773K.

Te awe ki runga i te ahua o te mata o te paninga: Ki te kore e pai te pāmahana (he teitei rawa, he iti rawa ranei), ka whakaatu te mata i te ahua o te waro kore utu, te pore korere ranei.

(1) I te teitei o te pāmahana, he tere rawa te tere o te nekehanga o nga ngota tauhohenga kaha, o nga roopu ranei, ka arahi ki te tohatoha koretake i te wa e whakaemihia ana nga rauemi, kaore e taea e nga waahi taonga me nga waahi rawakore te whakawhiti pai, ka puta he pores.

(2) He rereketanga i waenga i te tere tauhohenga pyrolysis o nga alkanes me te reiti tauhohenga whakaheke o te tantalum pentachloride. He nui te waro pyrolysis, a, kaore e taea te whakakotahi ki te tantalum i te waa, ka takaia te mata e te waro.

I te wa e tika ana te pāmahana, te mata o tepaninga TaChe mātotoru.

TaCka rewa nga matūriki me te whakahiato tetahi ki tetahi, kua oti te ahua o te karaihe, a ka pai te whakawhiti o te rohe o te witi.

3. ōwehenga hauwai:

I tua atu, he maha nga mea e pa ana ki te kounga o te paninga:

-Te kounga o te mata o te papanga

-Waehanga mara hau

-Ko te tohu o te rite o te whakaranu hau reactant

II. Ko nga hapa angamaheni opaninga tantalum carbide

1. Te paninga kapiti me te tihorenga

Rarangi whakarea whakareatanga waiariki CTE raina:

2. Te tātari hapa:

(1) Take:

(2) Tikanga tohu

① Whakamahia te hangarau whakamaarama hihi-X ki te ine i te riaka toenga.

② Whakamahia te ture a Hu Ke ki te tata i te ahotea o te toenga.

(3) Ngā tātai e pā ana

3.Whakanuia te hototahi miihini o te paninga me te taputapu

(1) Mata i roto i-tu paninga tipu

Te waiariki tauhohenga waiariki me te hangarau whakamaarama TRD

Te tukanga tote whakarewa

Whakangwarihia te tukanga whakaputa

Whakahekea te pāmahana tauhohenga

He iti te utu

He pai ake te taiao

He pai mo te hanga ahumahi nui

(2) Te paninga whakawhiti hiato

Te mahi tukutahi

CVDtukanga

Te paninga maha-waahanga

Te whakakotahi i nga painga o ia waahanga

Whakaritea ngawari te hanganga paninga me te wahanga

4. Hangarau tauhohenga waiariki TRD

(1) Tikanga Tauhohenga

Ko te hangarau TRD e kiia ana ko te tukanga whakauru, e whakamahi ana i te waikawa boric-tantalum pentoxide-sodium fluoride-boron oxide-boron carbide system ki te whakarite.paninga tantalum carbide.

① Ko te waikawa boric rewa ka memeha tantalum pentoxide;

② Ka whakahekehia te tantalum pentoxide ki nga ngota tantalum kaha, ka marara ki te mata kauwhata;

③ Ko nga ngota tantalum kaha ka uru ki te mata kauwhata ka tauhohe ki nga ngota waro kia hangapaninga tantalum carbide.

(2) Kī Tauhohenga

Ko te ahua o te paninga carbide me tutuki te whakaritenga kia teitei ake te hanga hāora pūngao kore o te huānga e hanga ana i te carbide i tera o te waikura boron.

He iti rawa te kaha kore o te Gibbs o te carbide (ki te kore, ka taea te hanga boron, boride ranei).

Ko te tantalum pentoxide he waikura kore. I roto i te borax whakarewa-teitei, ka taea e ia te tauhohe me te konutai konutai waikura kawakore ki te hanga konutai tantalate, na reira ka whakaiti i te pāmahana tauhohenga tuatahi.