●Sintered NdFeB maginetiyakashandiswa zvakanyanya kune yavo inoshamisa magineti maitiro. Nekudaro, iwo magineti 'asina kusimba ngura yekuramba inotadzisa iwo kushandiswazve mukutengesa maapplication, uye machira epamusoro anodiwa. Iyo yakanyanya kushandiswa coatings parizvino inosanganisira electroplating Ni-based coatings, electroplating Zn-basedmachira, pamwe ne electrophoretic kana spray epoxy coatings. Asi nekuenderera mberi kwekufambira mberi kwetekinoroji, izvo zvinodikanwa zvekupfekaof NdFeBari kuwedzerawo, uye akajairwa electroplating akaturikidzana dzimwe nguva havagoni kuzadzisa zvinodiwa. Iyo Al based coating yakaiswa uchishandisa yemuviri vapor deposition (PVD) tekinoroji ine hunhu hwakanaka.
● Mitoo yePVD yakadai sokupfapfaidza, ion plating, uye evaporation plating zvose zvinogona kuwana machira anodzivirira. Tafura 1 inoronga misimboti uye hunhu kuenzanisa kwe electroplating uye sputtering nzira.
Tafura 1 Kuenzanisa maitiro pakati pe electroplating uye sputtering nzira
Sputtering chiitiko chekushandisa masimba ane simba guru kubhomba nzvimbo yakasimba, zvichiita kuti maatomu nemamorekuru ari panzvimbo yakaoma achinjane simba rekinetic nezvikamu zvine simba guru izvi, zvichibva zvaputika kubva panzvimbo yakasimba. Yakatanga kuwanikwa naGrove muna 1852. Maererano nenguva yekukura kwayo, kwave kune sputtering yechipiri, sputtering yepamusoro, nezvimwe zvakadaro. Nekudaro, nekuda kwekushomeka kwemvura uye zvimwe zvikonzero, haina kushandiswa zvakanyanya kusvika 1974 apo Chapin akagadzira yakadzikama magineti sputtering, ichiita kukurumidza-kumhanya uye kuderera-tembiricha sputtering chokwadi, uye magnetron sputtering tekinoroji yakakwanisa kukura nekukurumidza. Magnetron sputtering inzira yekupopota inosuma maelectromagnetic fields panguva yesputtering kuti iwedzere ionization rate kusvika 5% -6%. Iyo schematic dhizaini yeakaenzana magnetron sputtering inoratidzwa muMufananidzo 1.
Mufananidzo 1 Nheyo yedhiyagiramu yekuenzanisa magnetron sputtering
Nekuda kwekunakisisa kwayo ngura kuramba, Al coating yakaiswa naion mhutedeposition (IVD) yakashandiswa neBoeing sechinotsiva electroplating Cd. Kana ichishandiswa kune sintered NdFeB, inonyanya kuve nezvakanakira zvinotevera:
1.High simba rekunamatira.
Simba rekunamatira reAl uyeNdFeBkazhinji iri ≥ 25MPa, ukuwo simba rekunamira reyakajairika electroplated Ni neNdFeB ingangoita 8-12MPa, uye simba rekunamira re electroplated Zn neNdFeB ingangoita 6-10MPa. Ichi chimiro chinoita kuti Al/NdFeB ikwane kune chero application inoda yakakwirira yekunamatira simba. Sezvinoratidzwa muMufananidzo 2, mushure mekuchinjanisa gumi kutenderera kwekuita pakati (-196 ° C) uye (200 ° C), simba rekunamira reAl coating rinoramba rakanakisa.
Mufananidzo 2 mufananidzo weAl/NdFeB mushure megumi alternating cyclic kukanganisa pakati (-196 ° C) uye (200 ° C)
2. Nyora muglue.
Iyo Al coating ine hydrophilicity uye iyo yekubata kona yeglue idiki, pasina njodzi yekudonha. Mufananidzo 3 unoratidza ndima 38mN pamusorotension fluid. Mvura yekuedza yakapararira zvachose pamusoro peAl coating.
Figure 3. muyedzo we38mN pamusorokunetsana
3.Iyo magnetic permeability yeAl yakaderera zvikuru (hukama hwepakati: 1.00) uye haizokonzeri kudzivirirwa kwemaitiro emagetsi.
Izvi zvakanyanya kukosha mukushandiswa kwemavhoriyamu magineti mundima ye3C. Kuita kwepamusoro kwakakosha zvikuru. Sezvinoratidzwa mumufananidzo 4, weiyo D10 * 10 sampuli mbiru, pesvedzero yeAl coating pane magineti zvivakwa idiki kwazvo.
Mufananidzo 4 Shanduko mune magineti zvimiro zveSintered NdFeB mushure mekuisa PVD Al coating uye electroplating NiCuNi coating pamusoro.
4.Kufanana kwehupamhi huri nani zvikuru
Nekuda kwekuti yakaiswa muchimiro chemaatomu nemasumbu eatomu, ukobvu hweAl coating hunodzoreka zvachose, uye kufanana kwehukobvu kuri nani kupfuura kweiyo electroplating coating. Sezvinoratidzwa mumufananidzo 5, iyo Al coating ine yunifomu ukobvu uye yakanakisa yekunamira simba.
Mufananidzo5 muchinjiko chikamu cheAl/NdFeB
5.PVD tekinoroji deposition process yakanyatsoenderana nemhoteredzo uye hapana dambudziko rekusvibiswa kwezvakatipoteredza.
Zvinoenderana nezvinodiwa zvinodikanwa, tekinoroji yePVD inogonawo kuisa ma multilayer, akadai seAl/Al2O3 multilayers ine yakanakisa corrosion resistance uye Al/AlN coatings ine yakanakisa mechanic properties. Sezvinoratidzwa mumufananidzo 6, iyo muchinjiko-chikamu chimiro cheAl/Al2O3 multilayer coating.
Fmufananidzo 6Muchinjikwa chikamuyeAl/Al2O3 multilyaers
Parizvino, matambudziko makuru anorambidza indasitiri yeAl coatings paNdFeB ndeiyi:
(1) Mativi matanhatu emagineti akaiswa zvakafanana. Chinodiwa chekudzivirira magineti kuisa yakaenzana coating pamusoro pekunze kwemagineti, izvo zvinoda kugadzirisa matatu-dimensional kutenderera kwemagineti mukugadziriswa kwebatch kuti ive nechokwadi chekuenderana kwemhando yekupfeka;
(2) Al coating stripping process. Muchikamu chikuru chekugadzirwa kwemaindasitiri, hazvidzivisike kuti zvigadzirwa zvisina kukodzera zvichaonekwa. Naizvozvo, zvinodikanwa kubvisa iyo isina kukodzera Al coating uyechengetedza zvakareiyo pasina kukuvadza kuita kweNdFeB magineti;
(3) Zvinoenderana neiyo chaiyo application nharaunda, sintered NdFeB magineti ane akawanda mamakisi uye maumbirwo. Naizvozvo, zvinodikanwa kudzidza nzira dzakakodzera dzekudzivirira dzemagiredhi akasiyana uye maumbirwo;
(4) Kuvandudzwa kwezvigadzirwa zvekugadzira. Iyo nzira yekugadzira inoda kuve nechokwadi chekugadzira zvine hungwaru, izvo zvinoda kuvandudzwa kwePVD michina inokodzera NdFeB kuchengetedzwa kwemagineti uye nepamusoro pekugadzira hunyanzvi;
(5) Kuderedza mutengo wePVD tekinoroji kugadzira uye kuvandudza kukwikwidza kwemusika;
Mushure memakore ekutsvakurudza uye kubudirira kwemaindasitiri. Hangzhou Magnet Power Technology yakakwanisa kupa yakawanda PVD Al plated zvigadzirwa kune vatengi. Sezvinoratidzwa muMufananidzo 7, mapikicha akakodzera echigadzirwa.
Mufananidzo 7 Al akaputirwa NdFeB magineti ane akasiyana maumbirwo.
Nguva yekutumira: Nov-22-2023
