Ma ka ʻaoʻao o ka umu 1000 ℃, i loko o ka ʻōnaehana desulfurization palekana kaiapuni ʻoihana, a i loko o nā mea hana optical kikoʻī, aia mau kahi mea e kū mālie i ka hoʻāʻo ʻana o nā mahana koʻikoʻi - ʻo ianā keramika silicon carbidei ʻike ʻia ʻo "gula ʻeleʻele ʻoihana". Ma ke ʻano he mea nui i ke kahua ʻoihana hou, ʻo nā waiwai wela i hōʻike ʻia e nā keramika silicon carbide e wehewehe hou ana i ka ʻike kanaka i nā mea wela kiʻekiʻe.
1. ʻO ke ala wikiwiki o ka hoʻoili wela
Loaʻa i nā keramika silikona carbide ka conductivity thermal e like me nā metala, me ka conductivity thermal i kekahi mau manawa ʻoi aku ka kiʻekiʻe ma mua o nā mea keramika maʻamau. Hoʻopili ʻia kēia conductivity thermal kūikawā i nā ʻātoma silicon carbon i hoʻonohonoho paʻa ʻia i loko o kona ʻano kristal, e hana ana i nā kahawai hoʻoili wela kūpono. Ke hoʻoili ʻia ka wela i loko o ka mea, ua like ia me kahi kaʻa e holo ana ma ke alaloa me ke keakea ʻole, hiki ke hoʻopuehu koke a like i ka wela, e pale ana i nā pōʻino palekana i hoʻokumu ʻia e ka wela nui kūloko.
2, Ka lōʻihi o ke ola ma nā wahi wela kiʻekiʻe
Ma kahi mahana kiʻekiʻe loa o 1350 ℃, ua palupalu a hoʻololi ʻia ka hapa nui o nā mea metala, ʻoiai hiki i nā keramika silicon carbide ke mālama i ka pono o ke kūkulu ʻana. Loaʻa kēia kūpaʻa wela kiʻekiʻe maikaʻi loa mai ka pilina covalent ikaika i loko o ka mea, e like me ke kūkulu ʻana i kahi pā kaua micro hiki ʻole ke luku ʻia. ʻOi aku ka kakaikahi i nā wahi oxidation wela kiʻekiʻe, hana ʻia kahi papa pale silica mānoanoa ma luna o kona ʻili, e hana ana i kahi "pale pale" kūlohelohe.
3. ʻO ke 'Mōʻī Hoʻomanawanui' o ke Kaua Hoʻomanawanui Mahana Kiʻekiʻe
I ka heihei marathon o nā mahana kiʻekiʻe i hoʻomau ʻia, nui nā mea e ʻike i ka hōʻino ʻana o ka hana ma muli o ka hoʻomehana lōʻihi, ʻoiai ʻo nā keramika silicon carbide sintered reaction e hōʻike ana i ka lōʻihi kupaianaha. Aia ka mea huna i ka hoʻolālā palena palaoa kū hoʻokahi - kahi ʻano pūnaewele ʻekolu-dimensional i hoʻokumu ʻia ma o ka ʻenehana sintering reaction, e like me ka hoʻopili ʻana i nā miliona o nā "kiko heleuma" micro i ka mea. ʻOiai ma hope o nā tausani hola o ka hoʻomoʻa ʻana i ka mahana kiʻekiʻe, hiki nō iā ia ke laka i ke kūpaʻa o ka microstructure. ʻO kēia ʻano e lilo ia i koho maikaʻi loa e pani i nā mea metala kuʻuna i nā hiʻohiʻona e like me nā wili hoʻolei mau i ka ʻoihana metallurgical a me nā ʻāpana ukana wela kiʻekiʻe i nā lako kemika. Wehewehe ia i ke ʻano o ka "ʻaʻole mae ka mahana kiʻekiʻe" me ka "ikaika paʻakikī".
Ke pono kāu hāmeʻa e hoʻokūkū i nā palena mahana, ʻo nā keramika silicon carbide sintered reaction paha ke 'mea hoʻomalu mahana' hilinaʻi. Ma ke ʻano he loea ʻoihana loea i ka ʻenehana sintering reaction,ʻO Shandong Zhongpenghoʻohana i nā ʻenehana patent like ʻole e hoʻonui i ka ikaika mechanical a me ka hana hana o nā mea me ka mālama ʻana i nā waiwai thermal maikaʻi loa. ʻAʻole wale kēia holomua ʻenehana e hōʻemi i nā kumukūʻai hana, akā hōʻike pū i nā manaʻolana noi ākea no nā keramika silicon carbide ma nā kahua ʻoihana e kū mai ana.
Ka manawa hoʻouna: Mei-16-2025