●Nā mākēneki NdFeB Sinteredua hoʻohana nui ʻia no kā lākou mau waiwai magnetic. Eia nō naʻe, ʻaʻole e hoʻohana ʻia ka hoʻohana ʻana i nā mea hoʻohana i nā noiʻi kālepa, a pono nā uhi ʻili. ʻO nā uhi i hoʻohana nui ʻia i kēia manawa me ka electroplating Ni-nā uhi paʻa, electroplating Zn-hoʻokumunā uhi, a me nā electrophoretic a i ʻole nā mea hoʻoheheʻe epoxy. Akā me ka holomua mau o ka ʻenehana, nā koi no nā uhiof NdFeBke hoʻonui nei hoʻi, a ʻaʻole hiki i nā papa electroplating maʻamau ke hoʻokō i nā koi. He mau hiʻohiʻona maikaʻi loa ka ʻenehana hoʻopaʻa ʻia Al i waiho ʻia me ka hoʻohana ʻana i ka ʻenehana vapor deposition (PVD)..
● Hiki i nā ʻenehana PVD e like me ka sputtering, ion plating, a me ka evaporation plating ke loaʻa nā pale pale. Hōʻike ka Papa 1 i nā loina a me nā ʻano hoʻohālikelike o ka electroplating a me nā ʻano sputtering.
Papa 1 Hoʻohālikelike i nā ʻano ma waena o ka electroplating a me nā ʻano sputtering
ʻO ka sputtering ke ʻano o ka hoʻohana ʻana i nā ʻāpana ikaika kiʻekiʻe e pana i kahi ʻili paʻa, e hoʻololi ana i nā atom a me nā molekala ma ka ʻili paʻa e hoʻololi i ka ikehu kinetic me kēia mau mea ikaika kiʻekiʻe, a laila e paʻi mai ka ʻili paʻa. Ua ʻike mua ʻia e Grove i ka makahiki 1852. E like me kona wā hoʻomohala ʻana, aia nā lua sputtering, tertiary sputtering, a pēlā aku. Eia naʻe, ma muli o ka haʻahaʻa haʻahaʻa sputtering pono a me nā kumu ʻē aʻe, ʻaʻole i hoʻohana nui ʻia a hiki i 1974 i ka wā i hana ai ʻo Chapin i ke kaulike magnetron sputtering, e hana ana i ke kiʻekiʻe-wikiwiki a me ka haʻahaʻa haʻahaʻa sputtering he ʻoiaʻiʻo, a hiki i ka ʻenehana sputtering magnetron ke hoʻomohala wikiwiki. ʻO ka hoʻouluʻana o Magnetron kahi ala hoʻoheheʻe e hoʻokomo i nā māla electromagnetic i ka wā o ka sputtering kaʻina e hoʻonui i ka nui o ka ionization i 5% -6%. Hōʻike ʻia ke kiʻikuhi schematic o ka hoʻoheheʻe ʻana i ka magnetron ma ke Kiʻi 1.
Kiʻi 1 Kiʻikuʻi kumu o ka sputtering magnetron kaulike
Ma muli o kona kūpaʻa ʻino maikaʻi loa, waiho ʻia ka uhi Al eion mahudeposition (IVD) ua hoʻohana ʻia e Boeing ma ke ʻano he pani no ka electroplating Cd. Ke hoʻohana ʻia no NdFe i hoʻopaʻa ʻiaB, loaʻa iā ia nā pono penei:
1.Hikaika pipili.
Ka ikaika pipili o Al a meNdFeBʻO ka maʻamau ≥ 25MPa, ʻoiai ʻo ka ikaika adhesive o ka electroplated Ni a me NdFeB ma kahi o 8-12MPa, a ʻo ka ikaika adhesive o electroplated Zn a me NdFeB ma kahi o 6-10MPa. Hiki i kēia hiʻohiʻona ke kūpono iā Al/NdFeB no kēlā me kēia noi e koi ai i ka ikaika pipili kiʻekiʻe. E like me ka mea i hōʻike ʻia ma ke Kiʻi 2, ma hope o ka hoʻololi ʻana i nā pōʻai he 10 o ka hopena ma waena o (-196 ° C) a me (200 ° C), ʻoi aku ka maikaʻi o ka ikaika pipili o ka uhi Al.
Kiʻi 2 o Al/NdFeB ma hope o 10 mau hopena pōʻaiapili ma waena o (-196 ° C) a me (200 ° C)
2. Hoʻomoʻa i ke kāpili.
He hydrophilicity ka uhi Al a he liʻiliʻi ke kihi pili o ke kāpili, me ka ʻole o ka hāʻule ʻana. Hōʻike ka helu 3 i ka 38mN ʻilikaiwai hoʻopaʻapaʻa. Ua pahola loa ka wai hoao ma ka ili o ka uhi Al.
Fhelu 3. ka ho'āʻo o 38mN ʻilikaihaʻalulu
3. He haʻahaʻa loa ka mana o Al (pili pili: 1.00) a ʻaʻole ia e pale i nā waiwai magnetic.
He mea koʻikoʻi kēia i ka hoʻohana ʻana i nā magnet volume liʻiliʻi ma ke kahua 3C. He mea nui ka hana o ka ʻili. E like me ka mea i hōʻike ʻia ma ke Kiʻi 4, no ka kolamu hōʻike D10 * 10, he liʻiliʻi loa ka mana o ka uhi ʻana o Al ma nā waiwai magnetic.
Kiʻi 4 Hoʻololi i nā waiwai magnetic o NdFeB sintered ma hope o ka waiho ʻana i ka PVD Al coating a me ka electroplating NiCuNi coating ma ka ʻili.
4. ʻOi aku ka maikaʻi o ke kūlike o ka mānoanoa
No ka mea ua waiho ʻia ma ke ʻano o nā ʻātoma a me nā puʻupuʻu atomika, hiki ke hoʻopaʻa ʻia ka mānoanoa o ka uhi Al, a ʻoi aku ka maikaʻi o ka like ʻana o ka mānoanoa ma mua o ka uhi electroplating. E like me ka mea i hōʻike ʻia ma ka Figure 5, ʻo ka uhi Al he mānoanoa like ʻole a me ka ikaika hoʻopili maikaʻi loa.
Kiʻi5 pauku kea o Al/NdFeB
5. ʻO ke kaʻina hana deposition ʻenehana PVD he mea pili i ka nohona a ʻaʻohe pilikia haumia kaiapuni.
E like me nā koi pono pono, hiki i ka ʻenehana PVD ke waiho pū i nā multilayers, e like me Al/Al2O3 multilayers me ke kūpaʻa corrosion maikaʻi loa a me nā uhi Al/AlN me nā waiwai mechanical maikaʻi loa. E like me ka mea i hōʻike ʻia ma ke Kiʻi 6, ke ʻano o ke keʻa o ka uhi ʻana o Al/Al2O3 multilayer.
Fhelu 6Kea paukuo Al/Al2O3 multilyaers
I kēia manawa, ʻo nā pilikia koʻikoʻi e hoʻopaʻa nei i ka hana ʻana o nā uhi Al ma NdFeB:
(1) Hoʻokomo like ʻia nā ʻaoʻao ʻeono o ka magnet. ʻO ke koi no ka pale magnet ka waiho ʻana i kahi uhi like ma ka ʻaoʻao o waho o ka magnet, kahi e pono ai ka hoʻonā ʻana i ka rotation ʻekolu-dimensional o ka magnet i ka hoʻoili ʻana i ka hui e hōʻoia i ka kūlike o ka maikaʻi o ka uhi;
(2) Kaʻina wehe ʻana i ka uhi ʻana o Al. Ma ke kaʻina hana ʻoihana nui, ʻaʻole hiki ke ʻike ʻia nā huahana kūpono ʻole. No laila, pono e wehe i ka uhi Al unqualified ahoomalu houme ka hoʻopōʻino ʻole i ka hana ʻana o nā magnet NdFeB;
(3) E like me ke kaiapuni noi kiko'ī, he nui nā māka a me nā ʻano kiʻi kiʻi NdFeB sintered. No laila, pono e aʻo i nā ʻano pale kūpono no nā māka a me nā ʻano like ʻole;
(4) Hoʻomohala i nā lako hana. Pono ke kaʻina hana e hōʻoia i ka hana kūpono kūpono, e koi ana i ka hoʻomohala ʻana i nā lako PVD kūpono no ka pale magnet NdFeB a me ka hana kiʻekiʻe;
(5) E ho'ēmi i ke kumukūʻai o ka hana ʻenehana PVD a hoʻomaikaʻi i ka hoʻokūkū mākeke;
Ma hope o nā makahiki o ka noiʻi a me ka hoʻomohala ʻoihana. Ua hiki iā Hangzhou Magnet Power Technology ke hāʻawi i nā huahana PVD Al plated nui i nā mea kūʻai aku. E like me ka mea i hōʻike ʻia ma ka Figure 7, nā kiʻi huahana pili.
Kiʻi 7 Al coated NdFeB magnet me nā ʻano like ʻole.
Ka manawa hoʻouna: Nov-22-2023
