ʻO ka pauka Silicon Boride, SiB6
>> Hoʻolauna Huahana
| Kaulana Molecular | B6si |
| Helu CAS | 12008-29-6 |
| Nā ʻano | ʻeleʻele a hina hina |
| Ka mānoanoa | 3. 0g / cm3 |
| Kuhi hoʻoheheʻe | 2200 C |
| Hoʻohana | Ma ke ʻano P-type thermoelectric wela kiʻekiʻe e hoʻololi ai i ka boapcarbide, hiki ke hoʻohana ʻia me ke ʻano he abrasive maʻamau, wili wili. Hoʻohana ʻia e like me ka hana ʻana i nā mea pālolo, nā nīnū blasting, nā gasblade hana a me nā ʻāpana a me nā sila i hana hewa ʻia i hoʻohana ʻia e like me kahi pale |
Silicon boride = 92. 95, density 3.0 / cm3, point melting 2200, glossyblack hina paukū, insoluble i ka wai, kūpale ʻaʻa, resistence thermalshock, resistence ka popopo kūpahū, ʻoi loa ma lalo o ka haʻalulu thethermal he ikaika nui a kūpaʻa me ka maikaʻi kiʻekiʻe temperaturethermoelectric mea e puku boron carbide, a me kona wela endtemperature hiki i 1200 C. Hiki ke hoʻohana ʻia e like me ka hana ʻana i ka ceramicmaterial, ka nob sande, ka hana ʻana i nā pahi uila a me nā ʻāpana i kuhi ʻia me nā sila.
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>> ʻIkepili pili
ʻO ka borate alumini (AlB2) kahi ʻano o ka hui binary i hoʻokumu ʻia e ka alumini a me ka boron. He ʻulaʻula hina hina ia ma lalo o ka mahana maʻamau a me ke kaomi. Kūpaʻa ia i ke anuanu dilute acid, a decomposed i ka wela hydrochloric acid a me ka nitric acid. ʻO ia kekahi o nā hui ʻelua o ka alumini a me ka boron. ʻO ka alb12 ʻē aʻe, i kapa mau ʻia ka borate alumini. ʻO Alb12 kahi aniani aniani monoclinic lustrous me ka umekaumaha kikoʻī o 2.55 (18 ℃).
ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai, ʻakika a me ka alkali. Hoʻopau ia i ka waikawa nitric wela a loaʻa ʻia e ka hoʻoheheʻe ʻana i ka boron trioxide, ka luaipele a me ka aluminika pū.
I ke kūkulu ʻana, hana nā ʻĀtoma B i nā flake graphite me nā ʻĀtoma Al ma waena o lākou, kahi like loa me ke ʻano o ka magnesium diboride. Hōʻike ke aniani hoʻokahi o AlB2 i ka conductivity metala ma ke axis i kūlike i ka mokulele hexagonal o ka substrate. Hoʻoikaika ʻia nā mea hoʻohui alumini Boron e ka pulina boron a i ʻole ka pulina boron me ka uhi pale.
ʻO ka nui o ka nui o ka fiber boron ma kahi o 45% ~ 55%. Ka umekaumaha haʻahaʻa haʻahaʻa, nā pono mechanical kiʻekiʻe. ʻO ka ikaika hoʻolōʻihi lōʻihi a me ka modulus elela o ka hoʻohui alumina boron i hoʻonui ʻia e pili ana iā 1.2 ~ 1.7gpa a me 200 ~ 240gpa.
ʻO ka modulus elastis modulus a me ka ikaika kikoʻī ma kahi o 3 ~ 5 mau manawa a me 3 ~ 4 mau manawa o ka titanium alloy duralumin a me ke kila kila. Hoʻohana ʻia ia i nā pahi pā turbojet engine fan, nā kaʻa mokulele a me nā kūkulu ukali. Hoʻohana ʻia ka papa hana hoʻopaʻa diffusion wela e hana ai i nā pā, nā ʻikepili a me nā ʻāpana me nā kinona paʻakikī, a hiki ke hoʻohana ʻia i ke kiola ʻana e hoʻomau i nā ʻano like ʻole.
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