Nigute karbide ya silicon ikora reaction?

Reaction sintering silicon karbide nuburyo bwingenzi bwo gukora ibikoresho byiza bya ceramic. Ubu buryo bukoresha uburyo bwo kuvura ubushyuhe bwa karubone na silikoni ku bushyuhe bwo hejuru kugirango butume bakora ceramics ya silicon.

1. Gutegura ibikoresho fatizo. Ibikoresho fatizo bya silicon karbide ya reaction irimo isoko ya karubone nisoko ya silicon. Inkomoko ya karubone ni umukara wa karubone cyangwa karubone irimo polymer, mugihe isoko ya silicon ari ifu ya silika. Ibyo bikoresho fatizo bigomba kumenagurwa, kugenzurwa no kuvangwa kugirango habeho ingano imwe, mugihe kandi bigenzura imiterere yabyo kugirango babone ubukorikori bwiza bwa silicon karbide ceramique mugihe cyo kuvura ubushyuhe.

2. Imiterere. Shira ibikoresho bivanze bivanze muburyo bwo kubumba. Hariho ubwoko bwinshi bwuburyo bwo kubumba, bukunze gukoreshwa ni gukanda no gutera inshinge. Gushushanya imashini ni ugusunika ifu y'ibikoresho fatizo munsi yigitutu cyo gukora, mugihe inshinge yo gutera inshinge aribikoresho fatizo bivanze nifata, byatewe mubibumbano binyuze muri siringi kugirango bibe. Nyuma yo gushingwa, birakenewe gukora imiti ya demoulding kugirango ikureho bilet ceramic.

3. Kuvura ubushyuhe. Umubiri wibumba washyizwe mumatara yo kuvura ubushyuhe kugirango ucumure. Inzira yo gucumura igabanijwemo ibyiciro bibiri: icyiciro cya karuboni nicyiciro cyo gucumura. Mu cyiciro cya karuboni, umubiri wa ceramic ushyuha ku bushyuhe bwo hejuru (ubusanzwe hejuru ya 1600 ° C) munsi yikirere kidafite ingufu, kandi isoko ya karubone ikora hamwe nisoko ya silicon kugirango ikore karbide ya silicon. Mu cyiciro cyo gucumura, ubushyuhe buzamurwa kugeza ku bushyuhe bwo hejuru (ubusanzwe hejuru ya 1900 ° C), butera kongera kwiyubaka no kwiyongera hagati ya karubide ya silicon. Muri ubu buryo, ubucucike bwumubiri wa silicon karbide burarushaho kunozwa, mugihe ubukana no kwihanganira kwambara nabyo byateye imbere cyane.

4. Kurangiza. Umubiri wa ceramic wacumuye ugomba kurangizwa kugirango ubone imiterere nubunini byifuzwa. Uburyo bwo kurangiza burimo gusya, gukata, gucukura, nibindi. Kubera ubukana bukabije bwibikoresho bya karubide ya silicon, biragoye kurangiza, bisaba ko hakoreshwa ibikoresho byo gusya neza hamwe nibikoresho byo gutunganya.

Muncamake, uburyo bwo gukora karbide ya silicon ya reaction ikubiyemo gutegura ibikoresho fatizo, kubumba, kuvura ubushyuhe no kurangiza. Muri byo, intambwe y'ingenzi ni uburyo bwo gutunganya ubushyuhe, kugenzura ni ngombwa kugira ngo haboneke ibikoresho byiza bya kariside ya silicon. Birakenewe kugenzura ubushyuhe, ikirere, gufata umwanya nibindi bintu byo kuvura ubushyuhe kugirango tumenye neza ko reaction ihagije, kristu yuzuye kandi ubucucike buri hejuru.

Ibyiza bya reaction ya-silicon carbide yumusaruro ni uko ibikoresho bya ceramic bifite ubukana bwinshi, imbaraga nyinshi, kwihanganira kwambara cyane hamwe nubushyuhe bwo hejuru bishobora gutegurwa. Ibi bikoresho ntabwo bifite imiterere yubukanishi gusa, ahubwo bifite nuburyo bwiza bwo kurwanya ruswa hamwe nubushyuhe bwo hejuru. Ibikoresho bya karibide ya silicon birashobora gukoreshwa mugukora ibice bitandukanye byubwubatsi, kashe ya mashini, ibikoresho byo gutunganya ubushyuhe, ububiko bw itanura nibindi. Muri icyo gihe, ibikoresho bya karubide ya silicon birashobora kandi gukoreshwa mu gice cya kabiri, ingufu z'izuba, ibikoresho bya rukuruzi hamwe nizindi nzego.

Muri make, reaction sintering silicon karbide nuburyo bwingenzi bwo gutegura ibikoresho byiza bya ceramic. Ibikorwa byo kubyaza umusaruro bisaba kugenzura neza buri murongo kugirango ubone ibikoresho byiza bya silicon karbide. Ibikoresho bya silicon karbide yibikoresho bifite ibikoresho byiza byubukanishi, kurwanya ruswa hamwe nubushyuhe bwo hejuru, kandi bifite amahirwe menshi yo gukoreshwa mubikorwa bitandukanye byinganda nubumenyi.