Ni iyihe miterere y’ibikoresho bishya bya electrode ya grafiti (nk'imashini ya carbon fibre reinforced na graphite isostatic)?

Ibikoresho bishya bya electrode ya grafiti byageze ku iterambere rikomeye mu miterere ya mekanike, imiterere y'ubushyuhe, kudahungabana kwa shimi, no gushobora gutunganywa. Bigaragazwa na grafiti ishyigikiwe na fibre ya karuboni na grafiti ya isostatic, imikorere yabyo y'ingenzi n'agaciro k'ikoreshwa ni ibi bikurikira:

I. Graphite ishyigikiwe na fibre ya karuboni: Inyongera mu buryo bushya mu miterere ya mekanike

1. Imbaraga n'Ubwiyongere bwa Modulus
Mu kwinjiza ingano nto ya graphene (0.075 wt%) mu migozi ya karubone ya PAN, imbaraga zayo zo gukurura zigera kuri 1916 MPa, naho modulus ya Young igera kuri 233 GPa, igaragaza ubwiyongere bwa 225% na 184%, ugereranije n'imigozi ya karubone ya PAN yonyine. Iri terambere rituruka ku kunoza imiterere ya graphene ya fibre karubone:

• Kugabanuka kw'imirongo: Kongeramo graphene bigabanya cyane ingano y'imyenge y'imbere n'imyanda iri mu migozi, hafi ya byose bigakuraho imiyoboro y'imbere ku gipimo cyo hejuru (0.1 wt%), bityo bigagabanya amanota yo kwishyiramo stress.
• Imiterere ya grafiti itondekanye: Raman spectroscopy igaragaza ko impapuro za nanosheets za graphene zizengurutswe n'imiterere ya grafiti yakozwe mu gihe cya PAN carbonization, bigatuma habaho graphite yuzuye kandi ifite inenge nke kandi irushaho kuba nziza.

2. Imiterere yagutse y'ikoreshwa

• Mu kirere: Ibikoresho bya grafiti byakomejwe na fibre ya karuboni, bifite ubucucike bwa 60% gusa ugereranyije n’ubw’icyuma cya aluminiyumu kandi bikaba bifite ubushobozi bwo kubumba nk’igice kimwe (bigabanya ikoreshwa ry’ibipfunyika), bikoreshwa cyane mu bice by’imiterere y’indege (urugero: 50% by’ibikoresho bivanze bikoreshwa muri Boeing B-787), ibice by’imodoka zitwara ibinyabiziga, n’ibice bya satelite.
• Inganda zigezweho: Kuba zidashobora kwangiza ikirere bituma ziba ingenzi cyane ku miyoboro ya moteri za roketi, ku nyubako z'ibanze za reactor ya kirimbuzi, n'ahandi hantu hakomeye.

II. Graphite Isostatic: Impinduka zirambuye mu miterere myinshi

1. Imiterere ya mekanike: Irenze ibyuma gakondo

• Ingufu nyinshi na isotropi: Binyuze mu gukanda isostatic, imbaraga zayo zo gukurura zirenze 1000 MPa (ziruta kure ibyuma bisanzwe), hamwe n'igipimo cya isotropi cya 1.0–1.1, bikuraho inenge za anisotropic za grafiti isanzwe.
• Ubucucike bwinshi n'ubudasaza: Ifite ubucucike bwa 1.95 g/cm³, imbaraga zo gukamura zirenga 80 MPa, n'imbaraga zo gukanda hagati ya 200–260 MPa, irakwiriye mu gukora feri, seal, na bearing zikora neza.

2. Imiterere y'ubushyuhe: Gutuza mu bihe bikomeye

• Ubudahangarwa n'ubushyuhe bwinshi no kudahangarwa n'ubushyuhe: Mu kirere kidakora neza, imbaraga zacyo za mekanike zigera ku bushyuhe bwa 2500°C, aho ubushyuhe bushonga bwa 3650°C n'ubushyuhe bushyuha bwa 4827°C. Ubushyuhe bwayo buke bugabanya impinduka mu ngero, bigatuma iba nziza cyane ku bikoresho bya roketi, imiyoboro, n'ibindi bice by'ubushyuhe bwinshi.
• Ubushobozi bwo gutwara ubushyuhe bwinshi: Ubushobozi bwayo bwiza bwo gutwara ubushyuhe butuma ubushyuhe bushira vuba, byongera imikorere myiza y'ibikoresho, nko mu bikoresho by'ubushyuhe byo mu bwoko bwa CZ-type single-crystal direct-pull furnace field components (ibicanwa, heaters).

3. Gukomera ku binyabutabire: Kurwanya ingese no kurwanya ogisijeni
Iguma ihamye mu bintu bihumanya ikirere, aside nyinshi, na organic solvents, irwanya isuri ituruka ku byuma bishongeshejwe n'ibirahure, bigatuma ikoreshwa mu bikoresho bya shimi, mu nyubako z'ibanze za nucleus, no mu bindi bidukikije bishobora kwangiza.

4. Uburyo bwo gutunganya ibintu: Guhindura ibintu no kubitunganya neza
Ishobora gutegurwa mu buryo ubwo aribwo bwose kugira ngo ihuze n'ibikenewe mu buryo bugoye, nk'amashanyarazi yo gukoresha mu gutunganya amashanyarazi n'ibumba rya grafiti ryo gukoresha mu gucukura ibyuma bihoraho.

III. Inganda n'Ibyerekezo by'ejo hazaza by'ibikoresho bishya bya Electrode ya Graphite

1. Iterambere ry'Inganda

• Grafiti ihinduka: Isoko ryayo ku isi rikomeje kwiyongera, aho ubushobozi bwayo muri Indoneziya na Maroc bukomeje gushimangira umwanya wayo mu nganda.
• Graphite ikoreshwa mu gukurura fibre ya karuboni: Yakoreshejwe neza n'abakiriya bakomeye mpuzamahanga ba bateri kandi iri kuyobora iterambere ry'urugero mpuzamahanga rwa mbere ku isi,Ibisobanuro birambuye nta kintu kirimo ku bikoresho bya Nano-Silicon Anode bya Bateri za Lithium-Ion.

2. Iterambere ry'ikoranabuhanga mu gihe kizaza

• Gutunganya ibikoresho fatizo: Kugabanya ingano y'uduce tw'ibice (urugero, binyuze mu guhindura ifu ya coke ya kabiri kugeza kuri μm 2–5) kugira ngo hongerwe imiterere ya mekanike.
• Udushya mu ikoranabuhanga ryo gukoresha ikoranabuhanga rya Graphitization: Ikoranabuhanga ryo gukoresha ikoranabuhanga rya Microwave graphitization rigabanya ikoreshwa ry'ingufu ku kigero cya 30% kandi rigabanya imikorere y'ingufu, bityo bigafasha abantu benshi gukoresha ikoranabuhanga rya Graphitization.
• Udushya mu miterere: Urugero, anode za grafiti ebyiri zifite ubushobozi bwo gushyushya vuba mu minota 6, 60% mu gihe zigumana ubucucike bw'ingufu bwa ≥230 Wh / kg binyuze mu gukwirakwiza ubunini bw'uduce dutatu n'ubugari bwa porosity.