I loko o ka ʻohana nui o nā mea o ka honua laha,gadolinium oxide (Gd2O2)ua lilo i hōkū ma ka ʻepekema ʻepekema waiwai me kona mau waiwai kino a me nā mea kemika a me nā kahua noi ākea. ʻAʻole ʻo kēia mea pauka keʻokeʻo he lālā koʻikoʻi o nā oxides honua ʻokoʻa, akā he mea waiwai nui hoʻi i ka hoʻomohala ʻana i ka ʻepekema a me ka ʻenehana hou. Mai ke kiʻi lāʻau lapaʻau a hiki i ka ʻenehana ikehu nuklea, mai nā mea magnetic a i nā mea optical, aia ka gadolinium oxide ma nā wahi āpau, e hōʻike ana i ka waiwai kūʻokoʻa o nā mea honua.
1. Nā waiwai kumu o ka gadolinium oxide
Gadolinium oxideʻO ka ʻokikika honua maʻamau maʻamau me kahi ʻano aniani cubic. I loko o kona ʻano aniani, ua hui ʻia nā ion gadolinium a me nā ion oxygen i kahi hoʻonohonoho kikoʻī kikoʻī e hana i kahi paʻa kemika paʻa. Hāʻawi kēia ʻano i ka gadolinium oxide i kahi helu heheʻe a hiki i 2350 ° C, e ʻae iā ia e noho paʻa i nā wahi wela kiʻekiʻe.
Ma ke ʻano o nā waiwai kemika, hōʻike ka gadolinium oxide i nā ʻano alkaline oxide maʻamau. Hiki iā ia ke hana me nā ʻakika e hana i nā paʻakai like a loaʻa kekahi hygroscopicity. Pono kēia mau hiʻohiʻona i ka mālama kūikawā a me ka mālama ʻana i nā kūlana no ka gadolinium oxide i ka wā hoʻomākaukau.
Ma ke ʻano o nā waiwai kino, loaʻa ka gadolinium oxide i nā waiwai optical a me ka magnetic. Loaʻa iā ia kahi kuhikuhi refractive kiʻekiʻe a me ka transmittance māmā maikaʻi i ka ʻāpana kukui ʻike ʻia, kahi e hoʻokumu ai i ke kumu no kāna noi ʻana ma ke kahua optical. I ka manawa like, hāʻawi ka 4f electron shell structure o ka gadolinium ion iā ia i nā waiwai magnetic kūʻokoʻa.
Breif hoʻolauna
| inoa huahana | Gadolinium Oxide,Gadolinium(III) oxide |
| Cas | 12064-62-9 |
| MF | Gd2O3 |
| Kaumaha Molekala | 362.50 |
| ʻO ka mānoanoa | 7.407 g/cm3 |
| Lae hehee | 2,420° C |
| Ka nana aku | Pauda keʻokeʻo |
| Maemae | 5N （Gd2O3/REO≥99.999%）；3N （Gd2O3/REO≥ 99.9%） |
| Ka hoʻoheheʻe | ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i nā ʻakika mineral ikaika |
| Paʻa | hygroscopic iki |
| ʻŌlelo lehulehu | GadoliniumOxid, Oxyde De Gadolinium, Oxido Del Gadolinio |
| Huahana hoʻoheheʻe Ksp | 1.8×10−23 |
| ʻO ka hana aniani | Pūnaehana kristal monoclinic |
| Brand | Epoka |
2. Nā wahi noi nui o ka gadolinium oxide
Ma ke kahua lapaʻau, ʻo ka noi nui loa o ka gadolinium oxide ma ke ʻano he mea maka no nā mea hoʻohālikelike magnetic resonance imaging (MRI). Hiki i ka Gadolinium complexes ke hoʻololi nui i ka manawa hoʻomaha o nā protons wai, hoʻomaikaʻi i ka ʻokoʻa kiʻi, a hāʻawi i nā kiʻi akaka no ka maʻi maʻi. Ua hoʻolaha nui kēia noi i ka hoʻomohala ʻana i ka ʻenehana kiʻi lāʻau hou.
Ma ke kahua o nā mea magnetic, ʻo ka gadolinium oxide kahi mea kī nui no ka hoʻomākaukau ʻana i nā mea magnetic e like me ka gadolinium iron garnet (GdIG). He kuleana koʻikoʻi kēia mau mea i nā mīkini microwave a me nā mea magneto-optical, a hāʻawi i kahi kumu waiwai no ka hoʻomohala ʻana i ka ʻenehana kamaʻilio hou.
I nā noi optical, hoʻohana nui ʻia ka gadolinium oxide i nā phosphors, nā mea laser, nā uhi optical a me nā māla ʻē aʻe ma muli o kāna mau waiwai optical maikaʻi loa. ʻOi loa i ka hoʻomākaukau ʻana i nā kiʻi ʻoniʻoni optical kiʻekiʻe-refractive-index, hōʻike ka gadolinium oxide i nā pono kūʻokoʻa.
I ka ʻenehana ikehu nuklea, hoʻohana ʻia ka gadolinium oxide ma ke ʻano he mea hoʻokele koʻokoʻo no nā reactors nuklea ma muli o kāna ʻāpana neutron absorption kiʻekiʻe. He mea koʻikoʻi kēia noi i ka hana palekana o nā reactor nuklea.
3. Ka hooulu ana o ka gadolinium oxide
Me ka holomua o ka ʻenehana hoʻomākaukau, ua hoʻomau mau ʻia ke ʻano synthesis o ka gadolinium oxide. Mai ke kaʻina hana kuʻuna solid-phase a hiki i ke ʻano sol-gel holomua, ʻo ka hoʻomaikaʻi ʻana i ke kaʻina hana hoʻomākaukau i hoʻomaikaʻi nui i ka maʻemaʻe a me ka hana o ka gadolinium oxide.
I nā māhele noi e puka mai ana, hōʻike ka gadolinium oxide i ka mana nui. Ma nā kukui paʻa, ka helu helu helu, ka hoʻokele kaiapuni a me nā mea ʻē aʻe, ke ʻimi nei nā mea noiʻi i nā noi hou o ka gadolinium oxide. Ua wehe kēia mau ʻimi ʻana i nā kuhikuhi hou no ka hoʻomohala ʻana o ka gadolinium oxide.
Mai ka hiʻohiʻona o nā manaʻo o ka ʻoihana, me ka hoʻomohala wikiwiki ʻana o nā ʻoihana e kū mai ana e like me ka ikehu hou a me nā mea hou, e hoʻomau ka ulu ʻana o ka mākeke no ka gadolinium oxide. ʻOi aku ma nā ʻano o ka hana kiʻekiʻe a me ka ʻenehana ʻokiʻoki, e hoʻonui ʻia ka nui o ka gadolinium oxide.
Ma ke ʻano he lālā koʻikoʻi o ka ʻohana waiwai o ka honua, ʻaʻole i ʻike wale ʻia ka waiwai o ka gadolinium oxide i kāna ākea ākea o kēia manawa, akā i loko o kāna mau palena ʻole i ka hoʻomohala ʻenehana e hiki mai ana. Mai ke olakino olakino a hiki i ka ʻenehana ikehu, mai ka kamaʻilio ʻike a i ka pale ʻana i ke kaiapuni, ke hāʻawi nei ka gadolinium oxide i nā haʻawina nui i ka holomua o ka ʻepekema kanaka a me ka ʻenehana me kāna mau waiwai kūʻokoʻa. Me ka hoʻomau mau ʻana o ka ʻepekema waiwai, ʻoiaʻiʻo e ʻālohilohi ʻo gadolinium oxide i nā kula hou aʻe a hoʻomau i ka mokuna kaao o nā mea honua.
Ka manawa hoʻouna: Feb-20-2025