I ka wā e hoʻokomo ʻia ai nā hāpana onā keramika silicon carbide porousi ʻike mua ʻia ma ka hale hoʻokolohua, ua like nā ʻano hana like me ka meli i hōʻike ʻia ma lalo o ka microscope electron me he mea lā he meli i hoʻonui ʻia i hoʻokahi miliona mau manawa. ʻO kēia mea kūikawā me ka porosity o 15-60% e neʻe mālie nei mai nā keʻena kuni o nā mīkini aerospace i ko mākou ola o kēlā me kēia lā.
I loko o kahi turbine kinoea ma 1600℃, ua lōʻihi ka lilo ʻana o nā mea maʻamau i hao heheʻe, akā mālama ka silicon carbide porous i ke kūpaʻa kupaianaha. I ka makahiki i hala, i kona kipa ʻana i ka Shanghai Institute of Ceramics o ka Chinese Academy of Sciences, ua hōʻike kekahi mea noiʻi i kahi hoʻokolohua hoihoi: ke kau ʻana i kahi pepa silicon carbide porous i loko o kahi lapalapa oxygen-acetylene (ma kahi o 3000℃), ua hōʻike ka thermometer ma ke kua ua piʻi wale ia ma 72℃. ʻO kēia kūpaʻa wela i loaʻa mai ka ʻōnaehana kristal β-SiC e lilo ia i "pale kaua ʻike ʻole ʻia" no ka ʻōnaehana pale wela o ka mokulele. ʻOi aku ka maikaʻi, ʻo kēlā mau pores micron-sized e like me nā lua ahi liʻiliʻi he nui ʻole, e hōʻemi ana i ka pono o ka hoʻoili wela ma 40-60% i hoʻohālikelike ʻia me nā keramika paʻa.
ʻAʻole paha i manaʻo nā kānaka ʻepekema mea e loaʻa i kēia ʻano keramika, i hoʻomohala mua ʻia no nā wahi koʻikoʻi, kahi pūnāwai lua ma ke kahua lapaʻau. Ua hōʻike ʻia nā noiʻi lapaʻau i paʻi ʻia ma ka Journal of Biomaterials i ka makahiki 2024 he 2.3 mau manawa kiʻekiʻe aʻe ka nui o ka hoʻohui ʻana o ka iwi i nā scaffolds silicon carbide me nā ʻano pore gradient (5μm ma ka ʻili a me 200μm ma lalo) ma mua o nā implants titanium alloy kuʻuna.
ʻO ke kaʻina hana o ka hoʻomākaukau ʻana i ka silicon carbide porous ponoʻī he hana kilokilo kemika. Ma o ke ʻano hana pore-forming agent (maʻamau polymethyl methacrylate microspheres) a i ʻole ke ʻano hana sintering reaction, hiki i nā ʻenekinia mea ke hoʻomalu pololei i nā ʻano pore e like me nā mea hana ʻala. ʻO ka mea hoihoi, ʻo ka palapala Sila Nui hou loa o 3M Company ma ʻAmelika Hui Pū ʻIa e hōʻike ana ʻo ka hoʻohana ʻana i ka diatomite recycled ma ke ʻano he template kūlohelohe ʻaʻole wale e hōʻemi i nā kumukūʻai hana ma 18%, akā loaʻa pū kekahi i kahi ʻano bionic e like me nā iwi coral. ʻO kēia ʻano hana "hoʻolilo i ka ʻōpala i waiwai" e kūlike pono me ka naʻauao Taoist o "ka pono o ka mea ʻole".
Noi
- Ma ke kahua o ka palekana o ke kaiapuni:Ma ke ʻano he mea nui o nā kānana particulate kaʻa diesel (DPF), hiki iā ia ke hopu i ka 99.7% o PM2.5
- Ka Hoʻokahuli Ikehu:Hoʻonui ke kākoʻo electrode no nā cell wahie oxide paʻa (SOFC) i ka pono hana mana i 65%
- ʻO ka lāʻau lapaʻau:Hoʻolaha ka ʻano o nā pore o nā scaffolds iwi i paʻi ʻia i ka 3D i ka ulu ʻana o nā cell a hoʻopōkole i ke kaʻina hana ho'ōla ma ka 30%
- Hana ʻana o ka semiconductor:Ua hoʻolōʻihi ʻia ke ola o nā pads polishing wafer i ʻekolu manawa, a ua kūʻai nui ʻia ke kaʻina hana 3nm a TSMC
Ka manawa hoʻouna: Iulai-30-2025