ʻO ka pauma Chromium Boride, CrB2

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ʻO ka pauma Chromium Boride, CrB2

kūpaʻa ʻaʻano, hoʻonāukiuki wela. Hoʻohana ʻia e like me ke pale ʻaʻohe, anti-hightemperature oxidation coating a me ka reactor nukelea i ka neutron absorption uhi electrode catalyst, fuel cell electrode electrode catalyst


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Kaulana Molecular  Crb2
Helu CAS  12006-80-3
Nā ʻano  paukū ʻāhinahina kala kala
Kuhi hoʻoheheʻe  1300C
Ka mānoanoa  7.63 Bi / cm3
Hoʻohana  kūpaʻa ʻaʻano, hoʻonāukiuki wela. Hoʻohana ʻia e like me ke kapa komo, pale anti-hightemperature oxidation a me ka reactor nukelea i ka neutron absorptioncoating electrode catalyst, fuel cell electrode electrode catalyst

COA

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COA

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Inoa huahana: chromium diboride
ʻO ka mole mole o chromium diboride: b2cr
Kaupaona Molecular: 73.62
Ka inoa Pelekania: chromium boride (CrB2) EINECS: 234-499-3
Ka nui: 5.15 Pelekania inoa: chromium diboride; monochromium diboride
Kihi uila: kiko hoʻoheheʻe: 1550oc
Hoʻohana ʻia ia no ka hana ʻana i ke alakaʻi uila uila kiʻekiʻe a me nā kinikini kūmole.
ʻO Chromium diboride (CRB_ 2) He wahi hoʻoheʻe kiʻekiʻe ka uhi, kahi paʻakikī kiʻekiʻe, kūpaʻa ʻaʻano kiʻekiʻe a me ke kūpaʻa kūpale. Hoʻohui, loaʻa iā ia kahi inertia kemika maikaʻi a ʻaʻole maʻalahi e hoʻopaʻa me ka hao. Ma ke ʻano he pale pale paʻakikī, manaʻo ʻia e hoʻokō i kēia mau koi hana ʻoka kūikawā. Hoʻokumu nui ʻia kēia pepa i ka CRB kūloko a me nā haole. ʻO ka holomua o ka noiʻi a me ka hoʻomohala ʻana o nā uhi paʻa i ka CRB waiho ʻia e ka ʻenehana PVD hui pū. Loaʻa nā hopena i ka waiwai ʻepekema nui a me ka waiwai noi. ʻO ka mea mua, ua waiho ʻia ʻo CRB e ka mana nui pulsed magnetron sputtering (hipims) _
Hoʻohālikelike ʻia ka ʻano, ka ʻāpana a me nā pono mechanical o ka uhi.
Ua aʻo ʻia ka hakakā a me ka lawena o ka uhi ʻana i nā wahi hōʻike ʻokoʻa (ka hakakā maloʻo, ka wai hoʻomaʻemaʻe a me ka wai kai. Hōʻike nā hualoaʻa: CRB_ Hōʻike ka uhi (101) i ka orientation i makemake ʻia, a ʻo ke ʻano nui o CRB_ ʻO ka ratio atomic o B / Cr ʻo 1.76, ka paʻakikī a me ka modulus elastis he 26.9 ± 1.0 GPA a me 306.7 ± 6.0 GPA. ʻO nā koina wili o ka uhi ʻana i ka huki maloʻo, ka wai i hoʻokahe ʻia a me ka wai kai he 0.75, 0.26 a me 0.22. ʻO ka coefficient hakina o ka uhi ʻana i ka wai distilled a me ka wai kai e hoʻoliʻiliʻi nui ʻia no ka lubrication palena o ka wai hoʻomaʻemaʻe a me ka wai kai. ʻO ke kūpikipiki a me ke ʻano ʻaʻano o ka uhi ʻana i ka hākoʻo maloʻo a me ka wai hoʻomaʻemaʻe kahi lole abrasive, ʻoiai i ke kai kai, ke emi nei ka coefficient o ka uhi ʻana, ʻo ia ka hopena synergistic o ka lole popopo a me nā lole abrasive.

ʻO ka lua, ma ke ʻano hoʻohālikelike me nā hipims, loaʻa ka CRB e DC magnetron sputtering e ka hoʻololi ʻana i ka mamao kumu i hoʻokumu ʻia_ ʻO ka lākiō atomika o B / Cr ʻokoʻa mai 1.9 a 2.0 me ka loli o ka mahana waiho. Hōʻike nā hualoaʻa XPS ʻo ka uhi mau ʻia o CRB_ Hōʻike nā hopena i ka liʻiliʻi o ka uhi ʻana a aia ka RQ ma waena o
1.11 nm a me 1.95 nm. Me ka hoʻonui ʻana o ka mahana waiho, ua hoʻonui ʻia ka hiki diffusion o nā atoms adsorbed ma ka ʻaoʻao substrate, a ua piʻi a hoʻonui ka crystallinity o ka uhi, a ua loli ka hana aniani mai ka orientation huikau o (101) a me (001) a (001) koho i makemake ʻia; ke hoʻololi i ka morphology ʻāpana o ka uhi ʻana mai ka hanana porous fibrous i ke kūkulu kolamu koʻikoʻi (ma kahi o 50 nm ke anawaena),
I ka hopena, ua hoʻololi ʻia i loko o kahi nano kolamu nunui (e pili ana i 4 ~ 7 nm ke anawaena).
Me ka hoʻonui ʻana o ka mahana waiho, ua hoʻomaikaʻi maikaʻi ʻia nā ʻano mechanical o ka uhi. Ke kiʻekiʻe aʻe ka mahana o ka waiho ma mua o 300 CR, hiki ke loaʻa i ka CRB ʻoi loa me ka ʻoi aku ka nui ma mua o 40 GPA_ Ke 400 ℃ ka mahana o ka waiho ʻana, ʻoi aku ka paʻakikī o ka uhi iā 50.7 ± 2 GPa. Hoʻololi ʻia ka evolution o microstructure a me nā pono mechanical me ka mahana o ka waiho i ka (001) makemake i ke ʻano a me ka hoʻonui ʻana o ka microstructure ma muli o ka hoʻonui ʻia o ka diffusion o nā atom of deposition. ʻO ka mea hope loa, ua aʻo pū ʻia nā CRB me (101) a me (001) nā orientation i makemake ʻia_ Ua hoʻāʻo ʻia ke kūpaʻa o ka uhi ʻana o ka uhi, a ua hoʻāʻo ʻia ka substrate CRB a me CRB ma nā aniani hoʻoili like ʻole_ ʻO nā pono uila electrochemical o 2 uhi i 3.5 wt.%
Nānā ʻia ka hopena NaCl. Hōʻike nā hualoaʻa: (101) makemake i ke koho ʻana o CRB_ Ua hoʻokumu ʻia kahi ʻāpana hou ma 1000 ℃, a (001) kahi i makemake ʻia o CRB_ Hōʻike nā hualoaʻa e hōʻike ana ka (101) - kāʻei CRB uhi i ke kiʻekiʻe kiʻekiʻe o ke ana wela ma muli o ka ( 101) makemake i ka orientation o CRB_ Hōʻike nā hopena i ka CRB ka pena ʻana iʻoi aku ka kiʻekiʻe o ka ikehu o ka pae a me ka lattice distorio ikehu ma mua o CRB_ hiki i ka magnitude_ 2 pale ke pale pono i ka carbide sima.

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