Graphite nwere mkpuchi TaC

I. Nnyocha paramita usoro

1. Sistemụ TaCl5-C3H6-H2-Ar

2. Okpomọkụ nke itinye ihe:

Dịka usoro thermodynamic si dị, a na-agbakọ na mgbe okpomọkụ karịrị 1273K, ike efu nke Gibbs nke mmeghachi omume ahụ dị obere nke ukwuu, mmeghachi omume ahụ zuru oke. Mgbanwe mmeghachi omume KP dị oke ukwuu na 1273K ma na-abawanye ngwa ngwa ka okpomọkụ na-arị elu, ọnụego uto na-ebelata nwayọ nwayọ na 1773K.

Mmetụta na ọdịdị elu nke mkpuchi ahụ: Mgbe okpomọkụ adịghị mma (oke elu ma ọ bụ dị ala), elu ahụ na-egosi ọdịdị carbon n'efu ma ọ bụ oghere ndị na-adịghị mma.

(1) N'oge okpomọkụ dị elu, ọsọ mmegharị nke atọm ma ọ bụ otu ndị na-eme ihe na-arụ ọrụ na-adị oke ọsọ, nke ga-eduga na nkesa na-adịghị mma n'oge nchịkọta ihe, ebe ndị bara ọgaranya na ndị dara ogbenye enweghịkwa ike ịgbanwe nke ọma, na-ebute oghere.

(2) E nwere ihe dị iche n'etiti ọnụego mmeghachi omume pyrolysis nke alkanes na mbelata ọnụego mmeghachi omume nke tantalum pentachloride. Kabọn pyrolysis karịrị akarị ma enweghị ike ijikọ ya na tantalum n'oge, nke na-eme ka carbon kpuchie elu ya.

Mgbe okpomọkụ kwesịrị ekwesị, elu nkeMkpuchi TaCdị oke.

TaCihe ndị ahụ na-agbaze ma na-agbakọta ọnụ, ụdị kristal ahụ zuru oke, ókèala ọka ahụ na-agbanwekwa nke ọma.

3. Oke haịdrọjin:

Na mgbakwunye, e nwere ọtụtụ ihe na-emetụta àgwà mkpuchi ahụ:

-Ịdị mma elu ala

- Ọgbakọ gas nke na-ewepụ ihe mkpofu

-Ogo nke otu nha nke ngwakọta gas reactant

II. Ntụpọ nkịtị nkemkpuchi tantalum carbide

1. Mkpuchi mgbawa na mkpụcha

CTE nke na-enye ohere maka mgbasa okpomọkụ kwụ ọtọ:

2. Nyocha ntụpọ:

(1) Ihe kpatara ya:

(2) Usoro njirimara

① Jiri teknụzụ X-ray diffraction tụọ ụdị ihe fọdụrụ.

② Jiri iwu Hu Ke mee ihe atụ nke nrụgide fọdụrụ.

(3) Usoro ndị metụtara ya

3. Mee ka nkwekọ igwe nke mkpuchi na ihe mkpuchi ahụ dịkwuo mma

(1) Mkpuchi uto dị n'elu ụlọ

Teknụzụ mgbasa ozi na mgbasa nke mmeghachi omume okpomọkụ TRD

Usoro nnu a kpụrụ akpụ

Mee ka usoro mmepụta dị mfe

Belata okpomọkụ mmeghachi omume

Ọnụ ego dị ala karịa

Ọ na-adịkwu mma gburugburu ebe obibi

Dabara adaba maka nnukwu mmepụta ụlọ ọrụ mmepụta ihe

(2) Mkpuchi mgbanwe mejupụtara

Usoro itinye ego n'otu oge

CVDusoro

Mkpuchi ọtụtụ ihe

Ijikọta uru nke akụkụ ọ bụla

Gbanwee ihe mejupụtara mkpuchi ahụ na nha ya n'ụzọ dị mfe.

4. Teknụzụ TRD maka itinye na mgbasa nke mmeghachi omume okpomọkụ

(1) Usoro Mmeghachi omume

A na-akpọkwa teknụzụ TRD usoro itinye ihe, nke na-eji sistemụ boric acid-tantalum pentoxide-sodium fluoride-boron oxide-boron carbide iji kwadebe.mkpuchi tantalum carbide.

① Asịd boric a gwakọtara agwakọta na-agbaze tantalum pentoxide;

② A na-ebelata Tantalum pentoxide ka ọ bụrụ atọm tantalum na-arụ ọrụ ma na-agbasa n'elu graphite;

③ A na-etinye atọm tantalum na-arụ ọrụ n'elu graphite ma na-emeghachi omume na atọm carbon iji mepụtamkpuchi tantalum carbide.

(2) Igodo Mmeghachi omume

Ụdị mkpuchi carbide ga-emezu ihe achọrọ na ike enweghị ike nke ihe mejupụtara carbide dị elu karịa nke boron oxide.

Ike nke carbide nke Gibbs enweghị dị ala (ma ọ bụghị ya, enwere ike ịmepụta boron ma ọ bụ borode).

Tantalum pentoxide bụ oxide na-anọpụ iche. N'ime borax agbazere nke nwere okpomọkụ dị elu, ọ nwere ike imeghachi omume na alkaline oxide sodium oxide siri ike iji mepụta sodium tantalate, si otú a belata okpomọkụ mmeghachi omume mbụ.