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ʻO Beryllium oxide ceramics me ke kiʻekiʻe thermal conductivity a me nā hiʻohiʻona pohō haʻahaʻa
Hoʻohana ʻia nā ceramics BeO i ka hana kiʻekiʻe, nā pūʻolo microwave mana kiʻekiʻe, nā pūʻolo transistor uila uila kiʻekiʻe, a me nā ʻāpana multi-chip kaapuni kiʻekiʻe. Hiki i ka hoʻohana ʻana i nā mea BeO ke hoʻopau i ka wela i hana ʻia i ka ʻōnaehana i ka manawa e hōʻoia i ka paʻa a me ka hilinaʻi o ka ʻōnaehana.
Hoʻohana ʻia ʻo BeO no ka hoʻopili transistor uila uila kiʻekiʻe
'Ōlelo Aʻo: ʻO Transistor kahi mea semiconductor paʻa, me ka ʻike, hoʻoponopono, hoʻonui, hoʻololi, hoʻoponopono uila, hoʻololi i ka hōʻailona a me nā hana ʻē aʻe. Ma ke ʻano he ʻano hoʻololi o kēia manawa, hiki i ka transistor ke hoʻomalu i ka hopena o kēia manawa ma muli o ka volta komo. ʻAʻole like me nā hoʻololi mechanical maʻamau, hoʻohana nā transistors i ke kelepona no ka mālama ʻana i kā lākou wehe a pani ʻana, a hiki ke wikiwiki loa ka wikiwiki o ka hoʻololi ʻana, a hiki i ka wikiwiki o ka hoʻololi ʻana i loko o ka hale hana ke piʻi aku ma mua o 100GHz.
Hoohana I na Nukelea Reactors
ʻO ka nuklear reactor ceramic material kekahi o nā mea nui i hoʻohana ʻia i nā reactors, i nā reactors a me nā fusion reactors, loaʻa nā mea seramika i nā mea ikaika kiʻekiʻe a me ka radiation gamma, no laila, i ka hoʻohui ʻana i ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa corrosion, pono nā mea seramika e loaʻa ka maikaʻi. paʻa paʻa. ʻO nā mea hoʻohālikelike neutron a me nā mea hoʻoponopono (moderators) o ka wahie nukle he mau BeO, B4C a i ʻole nā mea graphite.
ʻOi aku ka maikaʻi o ka paʻa ʻana o ka irradiation o ka Beryllium oxide ma mua o ka metala, ʻoi aku ka nui o ka nui ma mua o ka metala beryllium, ʻoi aku ka ikaika ma ka wela kiʻekiʻe, ʻoi aku ka maikaʻi o ka conductivity thermal, a ʻoi aku ka liʻiliʻi ma mua o ka metala beryllium. He kūpono no ka hoʻohana ʻana ma ke ʻano he reflector, moderator a me ka dispersion phase combustion collective i loko o kahi reactor. Hiki ke hoʻohana ʻia ka Beryllium oxide e like me ke koʻokoʻo hoʻokele i nā reactors nuklea, a hiki ke hoʻohui ʻia me nā ceramics U2O e lilo i wahie nuklea.
Kiekie-Grade Refractory - Special Metallurgical Crucible
He mea refractory ka huahana ceramic BeO. Hiki ke hoʻohana ʻia nā kīʻaha ceramic BeO no ka hoʻoheheʻe ʻana i nā metala kakaʻikahi a makamae, ʻoi aku ka nui o nā metala maʻemaʻe kiʻekiʻe a i ʻole nā mea hao. Hiki i ka mahana hana o ka crucible ke hiki i 2000 ℃.
Ma muli o kona wela hoʻoheheʻe kiʻekiʻe (e pili ana i 2550 ° C), kūpaʻa kemika kiʻekiʻe (kū'ē i ka alkali), kūpaʻa wela a me ka maʻemaʻe, hiki ke hoʻohana ʻia nā ceramics BeO e hoʻoheheʻe i nā aniani a me ka plutonium. Eia kekahi, ua hoʻohana maikaʻi ʻia kēia mau crucibles e hana i nā laʻana maʻamau o ke kālā, ke gula a me ka platinum. ʻO ke kiʻekiʻe kiʻekiʻe o ka "transparency" o BeO i ka electromagnetic radiation e hiki ai i nā mea metala ke hoʻoheheʻe ʻia e ka hoʻomehana induction.
Hoʻohana ʻē aʻe
a. Loaʻa i ka Beryllium oxide ceramics ka conductivity thermal maikaʻi, ʻelua mau kauoha o ka nui ma mua o ka quartz i hoʻohana mau ʻia, no laila he kiʻekiʻe kiʻekiʻe ka laser a me ka mana puka nui.
b. Hiki ke hoʻohui ʻia nā seramika BeO ma ke ʻano he ʻāpana i ke aniani o nā haku mele like ʻole. He aniani i loaʻa ka beryllium oxide e hoʻouna ana i nā kukui X. Hoʻohana ʻia nā paipu X-ray i hana ʻia me kēia aniani i ka nānā ʻana i ke ʻano a me ka lāʻau lapaʻau e mālama ai i nā maʻi ʻili.
He ʻokoʻa ka Beryllium oxide ceramics a me nā mea uila uila ʻē aʻe, i kēia manawa, paʻakikī ke hoʻololi ʻia me nā mea ʻē aʻe.
MEA # | Palekana hana | Ola |
kuhikuhi | ||
1 | Lae hehee | 2350±30 ℃ |
2 | Dielectric mau | 6.9±0.4(1MHz,(10±0.5)GHz) |
3 | Dielectric poho Angle tangent ikepili | ≤4×10-4(1MHz) |
≤8×10-4((10±0.5)GHz) | ||
4 | Ke kū'ē leo | ≥1014ʻŌ·cm(25 ℃) |
≥1011ʻŌ·cm(300 ℃) | ||
5 | Ka ikaika hoʻopilikia | ≥20 kV/mm |
6 | Haʻi ikaika | ≥190 MPa |
7 | Ka nui o ka leo | ≥2.85 g/cm3 |
8 | Ka helu kaulike o ka hoʻonui laina | (7.0~8.5)×10-61/K (25 ℃~500 ℃) |
9 | ʻO ke kau wela wela | ≥240 W/(m·K)(25℃) |
≥190 W/(m·K)(100℃) | ||
10 | Ke kū'ē i ka ha'alulu wela | ʻAʻohe māwae, chap |
11 | Paʻa kemika | ≤0.3 mg/cm2(1:9HCl) |
≤0.2 mg/cm2(10%NaOH) | ||
12 | Paʻa kinoea | ≤10×10-11 Pa·m3/s |
13 | Ka nui crystallite maʻamau | (12~30)μm |