Kana mienzaniso yezviumbwa zvesimbi zvesilicon carbide zvine porousZvakatanga kuonekwa murabhoritari, maumbirwo akafanana neuchi akaratidzwa pasi pemaelektron microscope aitaridzika semukoko wenyuchi wakawedzerwa kakapetwa kamiriyoni. Chinhu ichi chakakosha chine porosity ye15-60% chiri kufamba chinyararire kubva mumakamuri ekupisa emainjini emuchadenga kuenda muhupenyu hwedu hwezuva nezuva.
Mu turbine yegasi pa 1600℃, zvinhu zvakajairika zvakagara zvichishandurwa kuita simbi yakanyungudutswa, asi silicon carbide ine porous inochengetedza kugadzikana kunoshamisa. Gore rapera, paakashanyira Shanghai Institute of Ceramics yeChinese Academy of Sciences, muongorori akaratidza kuyedza kunonakidza: kuisa pepa re silicon carbide rine porous mumurazvo we oxygen-acetylene (inenge 3000℃), thermometer iri kumashure yakaratidza kuti yakakwira ne 72℃ chete. Kudzivirira kupisa uku kunobva muchimiro che β-SiC crystal kunoita kuti ive "nhumbi isingaoneki" yekudzivirira kupisa kwemuchadenga. Zviri nani, ma pores iwayo ane saizi ye micron akafanana nemachimney madiki asingaverengeki, zvichideredza kushanda kwekupisa ne 40-60% zvichienzaniswa ne ceramics dzakasimba.
Pamwe kunyange zvinhu zvakashandiswa nesainzi hazvina kutarisira kuti rudzi urwu rweceramic, rwakatanga kugadzirwa munzvimbo dzakaoma, rwaizowana chitubu chechipiri mune zvehutano. Tsvagiridzo yekiriniki yakaburitswa muJournal of Biomaterials muna 2024 inoratidza kuti zvidimbu zvesilicon carbide zvine magadzirirwo e gradient pore size (5μm pamusoro uye 200μm pasi) zvine mwero wekubatanidza mapfupa wakapetwa kaviri nekatatu kupfuura wezvishandiso zvechinyakare zvetitanium alloy.
Maitiro ekugadzira silicon carbide ine maporous pachayo imashiripiti emakemikari. Nekushandisa nzira yekugadzira maporous (inowanzova polymethyl methacrylate microspheres) kana nzira ye reaction sintering, mainjiniya ezvinhu anogona kudzora zvakananga hunhu hwepores sevanonhuhwirira. Zvinofadza kuti, patent yazvino ye3M Company muUnited States inoratidza kuti kushandisa diatomite yakadzokororwa se template yechisikigo hakungoderedzi mari yekugadzira ne18% chete, asiwo kunowana chimiro che bionic chakafanana nemapfupa ekorari. Iyi nzira ye "kushandura marara kuita pfuma" inonyatsoenderana nehuchenjeri hweTaoist hwe "kubatsira kwevasina maturo".
Kushandiswa
- Munyaya yekuchengetedzwa kwezvakatipoteredza:Sechinhu chikuru chemafirita edhiziri emotokari (DPF), inogona kubata 99.7% yePM2.5
- Shanduko yeSimba:Rutsigiro rwema electrode emasero emafuta e solid oxide (SOFC) runowedzera kushanda zvakanaka kwemagetsi kusvika 65%
- Zvekurapa:Maumbirwo emaburi emapfupa akadhindwa ne3D anokurudzira kukura kwemasero uye anopfupisa kutenderera kwekupora kwekiriniki ne30%.
- Kugadzira semiconductor:Nguva yehupenyu hwema wafer polishing pads yakawedzerwa katatu, uye maitiro eTSMC e3nm akatengwa akawanda.
Nguva yekutumira: Chikunguru-30-2025