Ziziphi izinto zokufudumeza zesithando somlilo?

Izinto zokufudumeza zesithando somlilo se-muffle ziquka iingcingo zombane zombane, iintonga ze-silicon carbide, kunye neentonga ze-silicon molybdenum.

Ingcingo yesitovu sombane:

Intambo yesithando sombane yenziwe ngentsimbi-chromium-aluminiyam kunye ne-nickel-chromium iingcingo zombane zokufudumeza zombane. Amandla ocingo lwesithando somlilo alawulwa yikhompyutha, kwaye ihlaselwe ngumatshini wokujija ozenzekelayo onesantya esiphezulu. Ikakhulu ibandakanya i-iron-chromium-aluminiyam i-alloy iingcingo zesithando sombane kunye neengcingo ze-nickel-chromium alloy electric furnace. Eyokuqala yimpahla ye-alloy enesakhiwo se-ferrite, kwaye le yokugqibela yimpahla ye-alloy enesakhiwo se-austenite. Zombini i-chromium-aluminiyam ingxubevange yombane yesithando sombane kunye ne-nickel-chromium ingxubevange yocingo lwesithando sombane zinendawo yokunyibilika engaphantsi kwe-1400℃, kwaye ngokubanzi zikwiqondo lobushushu eliphezulu kakhulu (imeko eshushu) phantsi kweemeko zokusebenza, kwaye ziqhelene nokusabela kwi-oxidation. emoyeni kwaye utshise Izinto ezingalunganga.

Intonga ye-silicon ye-carbide:

Iintonga ze-silicon ze-carbide ziyi-rod kunye ne-tubular non-metallic high-temperature yokushisa yombane yezinto zokufudumeza ezenziwe nge-high-purity green hexagonal silicon carbide njengeyona nto iphambili eluhlaza. Kwimeko ye-oxidizing, ubushushu bokusetyenziswa obuqhelekileyo bunokufikelela kwi-1450 ℃, kwaye ukusetyenziswa okuqhubekayo kunokufikelela kwiiyure ezingama-2000. Iintsimbi ze-silicon ze-carbide zilukhuni kwaye zi-brittle, zikwazi ukumelana nokubanda okukhawulezayo kunye nobushushu obukhawulezayo, azikhubazeka ngokulula kumaqondo obushushu aphezulu, kwaye zisetyenziswa kumaqondo aphezulu. Zineempawu zokumelana nobushushu obuphezulu, ukuxhathisa kwe-oxidation, ukuxhathisa kwe-corrosion, ukunyuka kobushushu okukhawulezayo, ubomi obude, i-deformation encinci yeqondo lokushisa, ukufakwa okulula kunye nokugcinwa, njl., kwaye zilungile uzinzo lweKhemikhali.

Nangona kunjalo, intonga ye-silicon carbide inokuba nezi ziphumo zilandelayo ngeoksijini kunye nomphunga wamanzi xa isetyenziswe ixesha elide ngaphezulu kwe-1000 ℃:

①Sic+2O2→Sio2+CO2 ②Sic+4H2O=Sio2+4H2+CO2

Ngenxa yoko, umxholo we-SiO2 kwi-element ukhula ngokuthe ngcembe, kwaye ukuchasana kuyanda ngokukhawuleza, okuguga. Ukuba umphunga wamanzi mkhulu kakhulu, uya kukhuthaza i-oxidation yeSiC. I-H2 eveliswe ngokusabela kwefomula ② idibanisa ne-O2 emoyeni ize iphinde ihlangane ne-H2O ukwenza isangqa esikhohlakeleyo. Ukunciphisa ubomi becandelo. I-Hydrogen (H2) inokunciphisa amandla omatshini wecandelo. I-Nitrogen (N2) ngaphantsi kwe-1200 ° C inokuthintela i-SiC kwi-oxidizing kunye nokusabela nge-SiC ngaphezu kwe-1350 ° C, ukwenzela ukuba i-SiC inokuchithwa yi-chlorine (Cl2) kunye ne-Sic inokuchithwa ngokupheleleyo.

Intonga ye-silicon molybdenum:

Iintonga zeSilicon molybdenum zidla ngokusetyenziswa kwiqondo lobushushu le-1600°C-1750°C. Zisetyenziswa ngokubanzi kwi-metallurgy, iglasi, iiseramics, imathiriyeli kazibuthe, izinto ezichasayo, iikristale, izinto ze-elektroniki, ukwenziwa kweziko kunye nezinye iinkalo. Zisetyenziselwa ukutshisa ubushushu obuphezulu beemveliso* Eyona nto ifanelekileyo yokufudumeza.

Intonga ye-silicon molybdenum ibonakaliswe kwi-high-temperature oxidizing atmosphere, kwaye i-quartz yokukhusela i-quartz yenziwe phezu komhlaba ukukhusela intonga ye-silicon molybdenum ukuba iqhubeke ne-oxidize. Xa ubushushu becandelo bukhulu ngaphezu kwe-1700 ° C, i-quartz yokukhusela i-quartz iyanyibilika, kwaye icandelo liyaqhubeka lisetyenziswa kwi-oxidizing atmosphere, kwaye i-quartz yokukhusela i-quartz ihlaziywa. Iintsimbi ze-silicon molybdenum akufanele zisetyenziswe ixesha elide kuluhlu lwe-400-700 ℃, ngaphandle koko amacandelo aya kuba ngumgubo ngenxa ye-oxidation enamandla kwiqondo lokushisa eliphantsi.