Silicon carbide ceramics: ka "kiai a puni" ma nā wahi wela wela

Ma ke "ke kahua kaua wela kiʻekiʻe" o ka ʻoihana hou, ʻike pinepine ʻia nā mea metala kuʻuna i nā pilikia e like me ka hoʻohaumia ʻana i ka deformation, oxidation a me ka corrosion. A he ʻano mea hou i kapa ʻiasilika carbide keramikake lilo mālie nei i kahu kumu o nā mea wela wela me kāna mau mana nui ʻekolu o ka "kūʻai wela kiʻekiʻe, anti agitation, a me ka hoʻoili wela wikiwiki".
1、 ʻO ka hiki maoli ke kū i nā wela kiʻekiʻe
Loaʻa i nā seramika Silicon carbide ka hiki ke pale i nā wela wela. Hoʻopili paʻa ʻia kona mau ʻātoma ma o nā kaula covalent ikaika, e like me kahi ʻoihana ʻekolu-dimensional i ulana ʻia mai nā kaola kila, hiki ke mālama i ka kūpaʻa o ka hoʻolālā ʻana a hiki i nā wahi wela kiʻekiʻe o 1350 ℃. ʻO kēia hiʻohiʻona hiki iā ia ke maʻalahi i nā hana wela kiʻekiʻe no ka wā lōʻihi i hiki ʻole i nā mea metala ke kūpaʻa, e lilo ia i koho kūpono no nā māla e like me ka lining kiln a me ka pale wela o ka mokulele.
2、 ʻO ka 'pale pale' e kū'ē i ka oxidative corrosion
Ma lalo o ke kaomi ʻelua o ka wela kiʻekiʻe a me ka media corrosive, ʻili pinepine nā mea maʻamau i kēlā me kēia papa e like me ka hao ʻōpala. Hiki i ka ʻili o ka silicon carbide ceramics ke hana i kahi papa pale paʻa o ka silicon dioxide, e like me ka uhi ʻana iā ʻoe iho me ka pale kaua ʻike ʻole. ʻO kēia hiʻohiʻona "ho'ōla pono'ī" hiki iā ia ke pale aku i ka hoʻoheheʻe wela kiʻekiʻe ma 1350 ℃ a pale i ka erosion mai ka paʻakai hoʻoheheʻe, ka waikawa a me ka alkali. Mālama ʻo ia i kahi kūlana kiaʻi o "ʻaʻohe pauka, ʻaʻohe hoʻoheheʻe" i loko o nā wahi paʻakikī e like me nā ʻōpala ʻōpala a me nā reactors kemika.

3、 Ka 'elele' o ka wela
ʻAʻole like me nā hiʻohiʻona "wela a humid" o nā seramika maʻamau, ʻo ka silicon carbide ceramics he thermal conductivity e like me nā metala. Ua like ia me kahi kaila hoʻoheheʻe wela i kūkulu ʻia, hiki ke hoʻololi koke i ka wela i hōʻiliʻili ʻia i loko o ka hāmeʻa i waho. ʻO kēia hiʻohiʻona "ʻaʻohe huna wela" e pale pono i ka pōʻino waiwai i hoʻokumu ʻia e nā wela kiʻekiʻe o ka wahi, e hana ai nā mea wela kiʻekiʻe i ka palekana a ʻoi aku ka maikaʻi o ka ikehu.
Mai nā kiln ʻoihana a hiki i ka photovoltaic silicon wafer sintering furnaces, mai nā paipu radiation nui a hiki i nā nozzles kiʻekiʻe, nā silicon carbide ceramics ke hoʻololi hou nei i ka ʻenehana ʻenehana o ka ʻoihana wela kiʻekiʻe me kā lākou mau pono piha o "ka lōʻihi, kūpaʻa, a me ka wikiwiki wikiwiki". Ma ke ʻano he mea lawelawe ʻenehana i komo hohonu i ka ʻoihana o nā ceramics kiʻekiʻe, hoʻomau mākou i ka hoʻolaha ʻana i nā holomua a me nā hana hou i ka hana waiwai, e ʻae ana i nā mea hana ʻoihana e mālama i kahi kūlana hana "ʻoluʻolu a haku" i nā kaiapuni koʻikoʻi.
——Ke uhai nei i ka palena wela o nā mea, hele mākou me ka ʻenehana!