Chii chinonzi graphitization?
Graphitization inzira yeindasitiri umo kabhoni inoshandurwa kuita graphite. Uku ndiko kushanduka kwemicrostructure kunoitika musimbi kabhoni kana yakaderera-alloy yakafumurwa kune tembiricha ye425 kusvika 550 degrees Celsius kwenguva yakareba, toti maawa chiuru. Iyi imhando ye embrittlement. Semuenzaniso, iyo microstructure yecarbon-molybdenum steels inowanzo ine pearlite (musanganiswa weferrite uye cementite). Kana zvinhu zvacho zvaitwa graphiti, zvinoita kuti pearlite iparare kuita ferrite uye isina kupararira graphite. Izvi zvinoguma nekuputirwa kwesimbi uye kuderera zvine mwero musimba apo aya magirafu zvimedu zvinogoverwa zvisina tsarukano mukati mematrix. Nekudaro, isu tinokwanisa kudzivirira graphitization nekushandisa zvinhu zvine kukwirira kupikisa izvo zvisinganyanyi kunzwa kune graphitization. Mukuwedzera, isu tinokwanisa kugadzirisa nharaunda ne, semuenzaniso, kuwedzera pH kana kuderedza chloride yemukati. Imwe nzira yekudzivirira graphitization inosanganisira kushandisa coating. Cathodic kudzivirira kwesimbi yakakandwa.
Chii chinonzi carbonization?
Carbonization inzira yeindasitiri umo organic matter inoshandurwa kuita kabhoni. Mishonga yatiri kufunga pano inosanganisira zvitunha zvezvirimwa nemhuka. Iyi nzira inoitika nekuparadza distillation. Iyi pyrolytic reaction uye inoonekwa seyakaomesesa maitiro umo akawanda panguva imwe chete maitiro emakemikari anogona kucherechedzwa. Semuenzaniso, dehydrogenation, condensation, hydrogen transfer uye isomerization. Iyo carbonization process yakasiyana neiyo carbonization process nekuti carbonization inokurumidza kuita nekuti inobata mizhinji mirairo yehukuru nekukurumidza. Kazhinji, huwandu hwekupisa hunoshandiswa hunogona kudzora chiyero checarbonization uye huwandu hwezvinhu zvekunze zvakasara. Semuenzaniso, kabhoni yemukati yezvakasara inenge makumi mapfumbamwe kubva muzana nehuremu pa1200K uye inosvika 99% nehuremu hunosvika 1600K. Kazhinji, carbonization ndeye exothermic reaction, iyo inogona kusiiwa pachayo kana kushandiswa sesimba remagetsi pasina kuumba chero kabhoni dhiabhorosi gasi. Nekudaro, kana iyo biomaterial ikaratidzwa kune kamwe kamwe shanduko mukupisa (senge mukuputika kwenyukireya), iyo biomaterial ichaita carbonize nekukurumidza sezvinobvira uye kuva yakasimba kabhoni.
Graphitization yakafanana necarbonization
Ose ari maviri akakosha maindasitiri maitiro anosanganisira kabhoni seyakagadziriswa kana chigadzirwa.
Ndeupi musiyano uripo pakati pegraphitization uye carbonization?
Graphitization uye carbonization maitiro maviri emaindasitiri. Musiyano mukuru pakati pecarbonization uye graphitization ndewekuti carbonization inosanganisira kushandura organic zvinhu kuita kabhoni, nepo graphitization inosanganisira kushandura kabhoni kuita graphite. Nokudaro, carbonization ikemikari shanduko, nepo graphitization ishanduko ye microstructure.
Nguva yekutumira: Sep-29-2021