ʻO kekahi o nā waiwai koʻikoʻi o nā seramika transparent ʻo ia ka transmittance. Ke hele ka malamalama ma waena o kahi ʻano, lilo ka māmā a me ka attenuation ikaika ma muli o ka absorption, ka noʻonoʻo ʻana o ka ʻili, ka hoʻopuehu ʻana a me ka refraction o ka medium. ʻAʻole hilinaʻi kēia mau attenuations i ka haku mele kumu o ka mea, akā i ka microstructure o ka mea. E hōʻike ʻia ma lalo nei nā mea e pili ana i ka transmittance o nā seramika.
1.Porosity o nā seramika
ʻO ka hoʻomākaukau ʻana i nā seramika māmā e hoʻopau loa i ka densification o ka micro-pore i ke kaʻina sintering. ʻO ka nui, ka helu a me keʻano o ka pore i loko o nā mea e loaʻa ai ka hopena koʻikoʻi i ka māmā o nā mea seramika. No ka laʻana, ua hōʻike ʻia nā haʻawina e hoʻemi ana ka transparency e 33% i ka wā e hoʻololi ai ka porosity paʻa i nā ceramics mai 0.25% a i 0.85%. ʻOiai ʻo ia paha ka hopena o kahi kūlana kūikawā, i kekahi ʻano, hiki iā mākou ke ʻike i ka hopena o ka porosity i ka ʻike ʻia o nā seramika he hōʻike pololei a hoʻomāinoino. Hōʻike nā ʻikepili noiʻi ʻē aʻe inā he 3% ka nui o ka stomatal, ʻo ka transmittance he 0.01%, a inā he 0.3% ka nui o ka stomata, ʻo ka transmittance he 10%. No laila, pono e hoʻonui i ka nui o nā seramika māmā a hoʻemi i kā lākou porosity, ʻoi aku ka maʻamau ma mua o 99.9%. Ma waho aʻe o ka porosity, ʻo ke anawaena o ka pore ka mana nui i ka transmittance o nā seramika. E like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei, hiki iā mākou ke ʻike i ka haʻahaʻa o ka transmittance i ka wā e like ai ke anawaena o ka stomata me ka lōʻihi o ka nalu o ka mālamalama hanana.
2. Ka nui o ka palaoa
ʻO ka nui o ka palaoa o nā polycrystals seramika he mea nui hoʻi i ka lawe ʻana o nā seramika māmā. Ke like ka lōʻihi o ka nalu māmā me ke anawaena o ka palaoa, ʻo ka hopena lūlū o ka mālamalama ka nui loa a ʻo ka transmittance ka haʻahaʻa loa. No laila, i mea e hoʻomaikaʻi ai i ka hoʻouna ʻana o nā seramika māmā, pono e hoʻomalu ʻia ka nui o ka palaoa ma waho o ka lōʻihi o ka nalu o ka mālamalama hanana.
3. Hoʻolālā palena palaoa
ʻO ka palena o ka palaoa kekahi o nā mea koʻikoʻi e hoʻopau i ka homogeneity optical o nā seramika a hoʻopuehu māmā a hoʻemi i ka transmittance o nā mea. ʻO ka papa hana o nā mea seramika he ʻelua a ʻoi aʻe paha nā ʻāpana, hiki ke alakaʻi maʻalahi i ka hoʻopuehu māmā ʻana ma ka ʻili palena. ʻOi aku ka nui o ka ʻokoʻa i ka haku ʻana o nā mea, ʻoi aku ka nui o ka ʻokoʻa o ka refractive index, a me ka haʻahaʻa o ka transmittance o nā ceramics holoʻokoʻa. , inclusions, dislocations a pela aku. Hiki i nā mea seramika me nā kristal isotropic ke hoʻokō i ka transmittance linear e like me ke aniani.
4. Hoʻopau i luna
Hoʻopili pū ʻia ka transmittance o nā seramika alohilohi e ka ʻili o ka ʻili. ʻAʻole pili wale ka ʻōpala o ka ʻili seramika i ka maikaʻi o nā mea maka, akā pū kekahi me ka hoʻopau mīkini o ka ʻili seramika. Ma hope o ka sintering, ʻoi aku ka ʻino o ka ʻili o nā seramika i mālama ʻole ʻia, a e ʻike ʻia ka noʻonoʻo diffuse i ka wā e hiki mai ana ka mālamalama ma luna o ka ʻili, e alakaʻi i ka nalowale māmā. ʻO kaʻoi aku o kaʻeleʻele o kaʻilikai,ʻoi aku kaʻino o ka transmittance.
ʻO ka roughness ili o nā seramika pili i ka fineness o nā mea maka. Ma waho aʻe o ke koho ʻana i nā mea maka fineness kiʻekiʻe, pono e hoʻoneʻe ʻia ka ʻili o nā seramika. Hiki ke hoʻomaikaʻi maikaʻi ʻia ka transmittance o nā alumina transparent ceramics ma ka wili a me ka polishing. ʻO ka transmittance o nā alumina transparent ceramics ma hope o ka wili ʻana hiki ke hoʻonui maʻamau mai 40% -45% a 50% -60%, a hiki i ka polishing ke piʻi aku ma mua o 80%.
Ka manawa hoʻouna: Nov-18-2019