Iindlela Zokwenza Iiceramics zeSilicon Carbide

Iindlela Zokwenza Iiceramics zeSilicon Carbide: Isishwankathelo Esipheleleyo

Ulwakhiwo olukhethekileyo lwekristale kunye neempawu ze-silicon carbide ceramics zinegalelo kwiimpawu zazo ezintle. Zinamandla agqwesileyo, ubulukhuni obuphezulu kakhulu, ukumelana nokuguguleka okugqwesileyo, ukumelana nokugqwala, ukuqhuba okuphezulu kobushushu kunye nokumelana okuhle nokutsha kobushushu. Ezi mpawu zenza i-silicon carbide ceramics ilungele ukusetyenziswa kwe-ballistic.

Ukwenziwa kwee-ceramics ze-silicon carbide kudla ngokusebenzisa ezi ndlela zilandelayo:

1. Ukubumba ngoxinzelelo: Ukubumba ngoxinzelelo yindlela esetyenziswa kakhulu ekwenzeni amaphepha angenazimbumbulu ze-silicon carbide. Le nkqubo ilula, kulula ukuyisebenzisa, isebenza kakuhle kwaye ifanelekile kwimveliso eqhubekayo.

2. Ukubumba ngenaliti: Ukubumba ngenaliti kunokuguquguquka okugqwesileyo kwaye kunokudala iimilo kunye nezakhiwo ezintsonkothileyo. Le ndlela iluncedo ngakumbi xa kuveliswa iindawo zeseramikhi zesilicon carbide ezinemilo ekhethekileyo.

3. Ukucinezela i-cold isostatic: Ukucinezela i-cold isostatic kubandakanya ukusetyenziswa kwamandla afanayo emzimbeni oluhlaza, nto leyo ebangela ukusasazwa koxinano olufanayo. Le teknoloji iphucula kakhulu ukusebenza kwemveliso kwaye ifanelekile kwimveliso yeeseramikhi ze-silicon carbide ezisebenza kakuhle.

4. Ukubumba ngejeli: Ukubumba ngejeli yindlela entsha yokubumba ngobukhulu obusondeleyo. Umzimba oluhlaza oveliswayo unesakhiwo esifanayo kunye namandla aphezulu. Iindawo zeseramikhi ezifunyenweyo zinokucutshungulwa ngoomatshini abahlukeneyo, nto leyo enciphisa iindleko zokucutshungulwa emva kokusila. Ukubumba ngejeli kulungele ngokukodwa ukwenziwa kweeseramikhi ze-silicon carbide ezinezakhiwo ezintsonkothileyo.

Ngokusebenzisa ezi ndlela zokwenza, abavelisi banokufumana iiseramikhi ze-silicon carbide ezikumgangatho ophezulu ezineempawu ezibalaseleyo zoomatshini kunye ne-ballistic. Amandla okwenza iiseramikhi ze-silicon carbide zibe ziintlobo ngeentlobo zeemilo kunye nezakhiwo avumela ukwenziwa ngokwezifiso kunye nokwenza ngcono ukuhlangabezana neemfuno ezithile zezicelo ezahlukeneyo.

Ukongeza, ukusebenza kakuhle kweendleko zeeseramikhi ze-silicon carbide kwandisa ukutsala kwayo njengezinto ezisebenza kakuhle ezimelana ne-ballistic. Olu dibaniso lweempawu ezinqwenelekayo kunye nexabiso elifanelekileyo lenza iiseramikhi ze-silicon carbide zibe ngumchasi onamandla kwindawo yesikrweqe somzimba.

Ukuqukumbela, ii-silicon carbide ceramics zezona zinto ziphambili ze-ballistic ngenxa yeempawu zazo ezibalaseleyo kunye neendlela zokubumba eziguquguqukayo. Ulwakhiwo lwekristale, amandla, ubulukhuni, ukumelana nokuguguleka, ukumelana nokugqwala, ukuqhuba kobushushu kunye nokumelana nokutsha kwe-thermal shock yee-silicon carbide ceramics kuzenza zibe lukhetho olunomtsalane kubavelisi kunye nabaphandi. Ngeendlela ezahlukeneyo zokwenza, abavelisi banokwenza ii-silicon carbide ceramics ukuze zihlangabezane nezicelo ezithile, ukuqinisekisa ukusebenza kakuhle kunye nokukhuselwa. Ikamva le-silicon carbide ceramics liyathembisa njengoko ziqhubeka nokuphuhlisa nokusebenza kakuhle kwicandelo lezinto ze-ballistic.

Ngokuphathelele ukhuseleko lwe-ballistic, ukudityaniswa kwamaphepha e-polyethylene kunye nezinto zokufaka i-ceramic kuye kwabonakala kusebenza kakhulu. Phakathi kweendlela ezahlukeneyo ze-ceramic ezikhoyo, i-silicon carbide itsale ingqalelo enkulu ekhaya nakwamanye amazwe. Kwiminyaka yakutshanje, abaphandi kunye nabavelisi bebehlola amandla e-silicon carbide ceramics njengezinto ezisebenza kakuhle ezimelana ne-ballistic ngenxa yeempawu zayo ezintle kunye nexabiso eliphantsi.

I-silicon carbide yikhompawundi eyenziwe ngokudibanisa ii-tetrahedrons ze-Si-C, kwaye ineefom ezimbini zekristale, i-α kunye ne-β. Kwiqondo lobushushu elingaphantsi kwe-1600°C, i-silicon carbide ikhona ngohlobo lwe-β-SiC, kwaye xa ubushushu budlula i-1600°C, i-silicon carbide iguquka ibe yi-α-SiC. I-covalent bond ye-α-silicon carbide inamandla kakhulu, kwaye inokugcina i-bond enamandla aphezulu nokuba kubushushu obuphezulu.