Graphite ifite TaC coating

I. Gushakisha ibipimo by'imikorere

1. Sisitemu ya TaCl5-C3H6-H2-Ar

2. Ubushyuhe bwo gushyiramo:

Dukurikije formula ya thermodynamic, bibarwa ko iyo ubushyuhe burenga 1273K, ingufu za Gibbs zidafite reaction ziba nke cyane kandi reaction iba yuzuye. KP ihoraho yo reaction ni nini cyane kuri 1273K kandi yiyongera vuba uko ubushyuhe bugenda bwiyongera, kandi umuvuduko wo gukura ugenda ugabanuka buhoro buhoro kuri 1773K.

Ingaruka ku miterere y'ubuso bw'igitambaro: Iyo ubushyuhe budakwiye (buri hejuru cyane cyangwa hasi cyane), ubuso bugaragaza imiterere ya karuboni cyangwa imyenge ifunguye.

(1) Mu bushyuhe bwinshi, umuvuduko w'ingendo za atome cyangwa amatsinda y'ibinyabutabire bikora uba wihuta cyane, ibyo bigatuma ibintu bikwirakwira mu buryo butaringaniye mu gihe cyo kwegeranya ibintu, kandi ahantu hakungahaye n'ahakennye ntihashobora guhinduka neza, bigatuma habaho imyenge.

(2) Hari itandukaniro hagati y'igipimo cy'imikorere ya pyrolysis ya alkanes n'igipimo cy'igabanuka ry'imikorere ya tantalum pentachloride. Karuboni ya pyrolysis ni nyinshi cyane kandi ntishobora guhuzwa na tantalum mu gihe runaka, bigatuma ubuso bupfundikirwa na karuboni.

Iyo ubushyuhe bukwiye, ubuso bw'ahoGutwikiriza TaCni nyinshi.

TaCUduce duto dushonga kandi tugaterana, imiterere ya kristu iba yuzuye, kandi umupaka w'ingano uhinduka neza.

3. Igipimo cya Hydrogen:

Byongeye kandi, hari ibintu byinshi bigira ingaruka ku bwiza bw'ipfundikizo:

-Ubuziranenge bw'ubuso bw'ubutaka

-Ikibuga cyo gusohora gazi

-Ingano y'ubumwe bw'imvange y'imyuka ikora

II. Inenge zisanzwe zaigipfundikizo cya tantalum carbide

1. Gusiga irangi no gukurura

Igipimo cy'ubushyuhe cy'umurongo CTE:

2. Isesengura ry'ibitagenda neza:

(1) Impamvu:

(2) Uburyo bwo gushyira mu byiciro

① Koresha ikoranabuhanga rya X-ray diffraction kugira ngo upime uburemere bw'ibisigaye.

② Koresha itegeko rya Hu Ke kugira ngo ugereranye stress isigaye.

(3) Amafishi ajyanye nayo

3. Kongera ubushobozi bwo guhuza irangi n'ishingiro ry'ubutaka

(1) Igishishwa cyo gukuraho ubushyuhe mu mwanya wacyo

Ikoranabuhanga ryo gukwirakwiza no gushyiramo amashanyarazi mu buryo bwa TRD

Uburyo bw'umunyu washongeshejwe

Oroshya inzira yo gukora

Gabanya ubushyuhe bw'ibisubizo

Igiciro gito cyane

Birushaho kubungabunga ibidukikije

Bikwiriye gukorwa mu nganda nini

(2) Irangi ry'impinduka rivanze

Uburyo bwo gutanga ubwishingizi hamwe

CVDinzira

Gusiga irangi ry'ibice byinshi

Guhuza ibyiza bya buri gice

Hindura neza imiterere y'igitambaro n'ingano yacyo

4. Ikoranabuhanga ryo gukwirakwiza no gushyiramo amashanyarazi mu buryo bwa TRD

(1) Uburyo bwo Gusubiza mu Bikorwa

Ikoranabuhanga rya TRD ryitwa kandi uburyo bwo gushyiramo ibintu, rikoresha sisitemu ya aside boric-tantalum pentoxide-sodium fluoride-boron oxide-boron carbide kugira ngo ritegureigipfundikizo cya tantalum carbide.

① Aside boric ishongeshejwe ishongesha tantalum pentoxide;

② Tantalum pentoxide igabanuka ikaba atome za tantalum zikora kandi ikwirakwira ku buso bwa grafiti;

③ Atome za tantalum zishyirwa ku buso bwa grafiti hanyuma zigakorana na atome za karuboni kugira ngo zikoreigipfundikizo cya tantalum carbide.

(2) Urufunguzo rw'Uburyo bwo Gusubiza

Ubwoko bw'ingufu za karubide bugomba kuba bwujuje ibisabwa ko ingufu zidafite ogisijeni z'ikintu kigize karubide ziba nyinshi kurusha iza okiside ya boron.

Ingufu za karubide zidafite Gibbs ni nkeya bihagije (bitabaye ibyo, boron cyangwa boride bishobora kubaho).

Tantalum pentoxide ni okiside idahinduka. Muri borax ishongeshejwe mu bushyuhe bwinshi, ishobora gukorana na okiside ya alkaline ikomeye ya sodium oxide ikarema sodium tantalate, bityo ikagabanya ubushyuhe bw'itangira ry'ihinduka.