I-micropowder ye-silicon carbide eluhlaza iyenza njani ngcono indlela esebenza ngayo izinto zokugquma?
Kumakhulu eemitha ngaphezulu, umoya onamandla wadlula. U-Old Li wabopha intambo yakhe yokhuseleko ngobuchule waza waqalisa ukuhlola i-blade enkulu ye-wind turbine phambi kwakhe. Iminwe yakhe erhabaxa yalandela amabala amancinci okuguguleka angaphantsi komphetho we-blade—indawo esengozini kakhulu kwiingxwelerha zomoya nesanti. Wafinga ubuso, esazi ukuba kungekudala i-blade kuya kufuneka ihliswe ukuze ilungiswe. Umbala okhethekileyo kumphezulu we-blade ngumgca wayo wokuqala wokuzikhusela emoyeni nasekukhukulisekeni kwesanti. Kwaye ngaphakathi kolu khuselo kukho “ithambo eliqinileyo” elibalulekileyo—i-micropowder eluhlaza ye-silicon carbide.
“Le ‘ntlabathi iluhlaza’ iluhlaza isenokubonakala ingenamsebenzi, kodwa ngaphandle kwayo, uboya bethu obuyi-blade bungafana nephepha!” U-Old Li wayehlala ethetha neengcali ezintsha. Kwihlabathi elikhulu lezinto zokugquma, i-silicon carbide micropowder eluhlaza idlala indima engenakutshintshwa. Ayisiyo nje “ithambo” loboya; ikwasisixhobo esinokusetyenziswa ngeendlela ezahlukeneyo esiphucula ukusebenza kwayo ngokubanzi.
“Amathambo Aqinileyo” Axhasa “Ikhaka Ledayimani”
Ikhabhayithi yesilicon eluhlazaUmgubo omncinci, ngokutsho nje, yi-silicon carbide (SiC) ecoliweyo kakhulu ibe ngumgubo olingana ne-micron. Eyona nto ibalulekileyo bubulukhuni bayo! Ubulukhuni bayo be-Mohs bufikelela kwi-9.5, budlula idayimani kunye ne-cubic boron nitride kuphela, kwaye bunzima kakhulu kunentsimbi eqhelekileyo. Ukuyifaka kwiingubo ezahlukeneyo ezingagugiyo kufana nokongeza iinkozo ezincinci zedayimani kudaka oluthambileyo.
Khawucinge ngomphezulu womphezulu womphezulu obethelwe yisanti ekhawulezayo, inkunkuma yesinyithi, okanye ulwelo olubolayo. Ukuba umphezulu womphezulu ubuyi-resin okanye isinyithi esithambileyo, ubuya kuguguleka kwaye ubole kwimizuzwana embalwa. Nangona kunjalo, xa i-micropowder eluhlaza ye-silicon carbide isasazeke ngokulinganayo ngaphakathi kwe-matrix yomphezulu womphezulu, la masuntswana aqinileyo asebenza njenge "zikhuselo" ezincinci ezingenakubalwa kunye "neenqaba." Zifunxa kwaye zisasaze amandla ombane, zinciphisa kakhulu ukuguguleka nokulahleka kwezinto zomphezulu ngokwazo. I-micropowder eluhlaza ye-silicon carbide, umphezulu oqinileyo nohlala ixesha elide, usetyenziswa kwiindonga zangaphakathi zemibhobho yemigodi, amazinyo ebhakethi yokukhupha, kunye nezinto eziphambili zokubhola ioyile. Olu "bulukhuni" lwandisa ubomi benkonzo yomphezulu wo ...
"Intsimbi Eqinisiweyo" Iyomeleza Umzimba
I-micropowder ye-silicon carbide eluhlaza ayipheleli nje ekunikeni amandla, kodwa ikwaqinisa neengubo.Izinto zokugquma, ingakumbi ezo zisekelwe kwi-polymer ezifana ne-epoxy kunye ne-polyurethane, zihlala zinamandla alinganiselweyo, ubulukhuni, kunye nokumelana nobushushu. I-micropowder ye-silicon carbide eluhlaza isebenza njenge-mesh yentsimbi eyongezwe kwikhonkrithi, iphucula kakhulu iipropati zoomatshini zokwaleka.
1. Amandla kunye neModulus: Iisuntswana zesilicon carbide eziluhlaza eziqinileyo zinamathelana ngokuqinileyo kwi-matrix yokugquma, zidlulisa kwaye zichitha imithwalo ngempumelelo. Xa i-coating ichaphazeleka okanye igobile, ezi suntswana zithintela iintanda ukuba zingasabalali lula, nto leyo ephucula kakhulu amandla e-coating, amandla e-flexural, kunye ne-elastic modulus (ukuqina). Kufana nokongeza amatye kumhlaba othambileyo—ngokwemvelo kwenza indlela ibe namandla kwaye imelane noxinzelelo.
2. Uzinzo Lwemilinganiselo kunye Nokumelana Nobushushu:I-silicon carbide eluhlaza (GSIC)inomlinganiselo ophantsi wokwanda kobushushu kunye nozinzo oluhle kakhulu lobushushu (inokumelana nobushushu obungaphezulu kwe-1,000 degrees Celsius ngaphandle kokubola). Xa yongezwa kwiingubo, ithintela ngokufanelekileyo ukuguquka, ukuqhekeka, kunye nokuqhekeka okubangelwa kukwanda okungaguqukiyo kunye nokucutheka kwiindawo ezishushu nezibandayo ezitshintshanayo. Oku kubalulekile kwiingubo ezisebenza phantsi kotshintsho olukhulu lobushushu okanye ezifuna ukuphiliswa kobushushu obuphezulu. Iqinisekisa ukuba ingubo ihlala izinzile kwaye imelana nokuguquguquka phantsi kotshintsho lobushushu.
Ibhalansi encinci phakathi "kwesikhuselo sobushushu" kunye "nenethiwekhi yokuqhuba ubushushu"
Iimpawu zobushushu ze-GSIC micropowders eziluhlaza nazo ziye zahlolwa kwishishini lokugquma, eyona nto iphambili ziimfuno zokusetyenziswa.
Ukufakwa kobushushu: Khawuthelekelele udonga lwesithando somlilo okanye inxalenye yenjini ekufuneka imelane namaqondo obushushu aphezulu.I-GSICIipowder ezincinci zisasazwa ngokulinganayo kwi-insulation coating enemingxuma (njenge-ceramic-based okanye i-resin-based coating ekhethekileyo), ngelixa iipowder ngokwazo zibonelela ngokuhanjiswa kobushushu okuhle, zikwanyusa ukuthamba kwendlela yokuhamba kobushushu ngaphakathi kwe-coating. Zikwasebenza ngokubambisana nee-pores ukuthintela ngempumelelo ubushushu ukuba bungene ngokukhawuleza kwi-coating. Oku kufana nokwakha i-maze yeendonga ezenziwe ngezitena ezincinci ezingenakubalwa zokukhusela (iisuntswana ze-silicon carbide eluhlaza) kunye nomoya phakathi kwesithando somlilo kunye nehlabathi langaphandle, nto leyo ephucula kakhulu i-insulation ye-thermal coating.
Ukusasazwa Kobushushu Okuphuculweyo: Ngokwahlukileyo koko, kwiingubo ze-elektroniki ezifakwe kwiinxalenye ze-elektroniki okanye kwiingubo ezithile ezisekelwe kwisinyithi ezimelana nokuguguleka ezifuna ukusasazeka kobushushu ngokukhawuleza, i-green silicon carbide powder iba “yingcali yokuqhuba ubushushu.” Ukuqhuba kwayo ubushushu kuphezulu kakhulu kunee-polymers ezininzi kunye nee-substrates zesinyithi. Xa yenza inethiwekhi yobushushu esebenzayo ngaphakathi kwengubo, isebenza njengee-“highways” ezininzi ezincinci, iqhuba ubushushu bangaphakathi ngokukhawuleza kumphezulu wengubo kwaye iyitshabalalise, ithintela ubushushu obugqithisileyo kunye nokungaphumeleli kwesixhobo. Kufana nokusebenzisa umaleko “we-thermal paste” ofakwe amasuntswana aqhuba ubushushu asebenza kakuhle kumphezulu we-hot chip.