●Ihe ndọta nke NdFeBejirila ya mee ihe n'ọtụtụ ebe maka njirimara magnetik ha dị ịrịba ama. Agbanyeghị, nguzogide corrosion na-adịghị mma nke magnet na-egbochi iji ha ọzọ na ngwa azụmahịa, yana mkpuchi elu dị mkpa. Ihe mkpuchi a na-ejikarị eme ihe ugbu a gụnyere electroplating Ni-mkpuchi dabere, electroplating Zn-daberemkpuchi, yana electrophoretic ma ọ bụ ịgba epoxy mkpuchi. Ma na ọganihu na-aga n'ihu nke nkà na ụzụ, ihe ndị a chọrọ maka mkpuchiof NdFeBna-abawanye, na ot electroplating n'ígwé mgbe ụfọdụ enweghị ike izute chọrọ. Ihe mkpuchi mkpuchi Al nke etinyebere site na iji teknụzụ ikuku ikuku anụ ahụ (PVD) nwere njirimara mara mma.
● Usoro PVD dị ka sputtering, ion plating, na evaporation plating nwere ike nweta mkpuchi nchebe. Isiokwu 1 depụtara ụkpụrụ na njirimara atụnyere nke electroplating na sputtering ụzọ.
Isiokwu 1 Ntụle n'etiti electroplating na sputtering ụzọ
Ịgbasa bụ ihe na-eme site n'iji ụmụ irighiri ihe dị elu na-atụ bọmbụ n'elu elu siri ike, na-eme ka atom na ụmụ irighiri ihe dị n'elu ahụ siri ike na-agbanwe ike nke kinetic na ihe ndị a nwere ike dị elu, si otú ahụ na-esi na elu ahụ pụta. Grove chọtara ya nke mbụ na 1852. Dị ka oge mmepe ya si dị, e nweela sputtering nke abụọ, sputtering nke atọ, na ihe ndị ọzọ. Otú ọ dị, n'ihi arụmọrụ dị ala na ihe ndị ọzọ, a naghị eji ya eme ihe ruo n'afọ 1974 mgbe Chapin mepụtara magnetron sputtering ziri ezi, na-eme ka ọsịsọ ọsọ na nke dị ala na-agbapụta eziokwu, na nkà na ụzụ magnetron sputtering nwere ike ịmalite ngwa ngwa. Ịgbasa Magnetron bụ usoro ịgbasa nke na-ewebata oghere electromagnetic n'oge usoro ịgbasa iji mee ka ọnụọgụ ionization dịkwuo 5% -6%. E gosipụtara eserese schematic nke nshịkọ magnetron ziri ezi na foto 1.
Ọgụgụ 1 Ụkpụrụ nke ịgbasa magnetron ziri ezi
N'ihi na ya magburu onwe corrosion eguzogide, Al mkpuchi edebe siteion uzuokuNkwụnye ego (IVD) ejirila Boeing dochie anya Cd electroplating. Mgbe ejiri ya maka sintered NdFeB, ọ kachasị nwere uru ndị a:
1.High ike nrapado.
Ike nrapado nke Al naNdFeBbụ n'ozuzu ≥ 25MPa, mgbe nrapado ike nke nkịtị electroplated Ni na NdFeB bụ banyere 8-12MPa, na nrapado ike nke electroplated Zn na NdFeB bụ banyere 6-10MPa. Njirimara a na-eme Al/NdFeB dabara maka ngwa ọ bụla chọrọ ike nrapado dị elu. Dị ka e gosiri na Figure 2, mgbe a gbanwere 10 cycles nke mmetụta n'etiti (-196 ° C) na (200 Celsius C), nrapado ike nke Al mkpuchi na-anọgide magburu onwe ya.
Ọgụgụ 2 foto nke Al/NdFeB mgbe 10 ọzọ cyclic mmetụta n'etiti (-196 ° C) na (200 Celsius)
2. Tinye n'ime gluu.
Ihe mkpuchi Al nwere hydrophilicity na kọntaktị kọntaktị nke gluu dị ntakịrị, na-enweghị ihe ize ndụ nke ịdaba. Nọmba 3 na-egosi 38mN elummiri mmiri erughị ala. A na-agbasa mmiri nyocha ahụ kpamkpam n'elu mkpuchi Al.
Figure 3. ule nke 38mN eluesemokwu
3.The magnetik permeability nke Al dị nnọọ ala ( ikwu permeability: 1.00) na-agaghị eme ka ikpuchi nke magnetik Njirimara.
Nke a dị mkpa karịsịa na ntinye obere magnetik olu na mpaghara 3C. Ịrụ ọrụ elu dị ezigbo mkpa. Dị ka egosiri na eserese 4, maka kọlụm nlele D10 * 10, mmetụta nke mkpuchi Al na ihe ndọta dị ntakịrị.
Ọgụgụ 4 Mgbanwe na njirimara magnetik nke sintered NdFeB mgbe etinyere mkpuchi PVD Al na mkpuchi NiCuNi electroplating n'elu.
4.The uniformity nke ọkpụrụkpụ bụ nnọọ mma
N'ihi na a na-echekwa ya n'ụdị atom na ụyọkọ atọm, ọkpụkpụ nke mkpuchi Al bụ nke a na-achịkwa kpamkpam, na ịdị n'otu nke ọkpụrụkpụ dị mma karịa nke mkpuchi electroplating. Dị ka egosiri na eserese 5, mkpuchi Al nwere oke nha na ike nrapado mara mma.
Onyonyo5 obe nke Al/NdFeB
5.The PVD technology deposition usoro bụ kpamkpam gburugburu ebe obibi enyi na enyi na ọ dịghị nsogbu mmetọ gburugburu ebe obibi.
Dị ka ihe dị mkpa chọrọ, teknụzụ PVD nwekwara ike idobe multilayers, dị ka Al / Al2O3 multilayers nwere ezigbo nguzogide corrosion na mkpuchi Al / AlN nwere ezigbo ihe eji arụ ọrụ. Dị ka egosiri na eserese 6, nhazi nke akụkụ nke Al / Al2O3 multilayer mkpuchi.
Figuri 6Gafee ngalabanke Al/Al2O3 ọtụtụ
Ugbu a, isi nsogbu na-egbochi mmepụta nke Al coatings na NdFeB bụ:
(1) A na-edobe akụkụ isii nke magnet n'otu n'otu. Ihe a chọrọ maka nchebe magnet bụ itinye ihe mkpuchi kwekọrọ na elu elu nke magnet, nke na-achọ idozi ntụgharị akụkụ atọ nke magnet na nhazi nhazi iji hụ na nkwekọ nke mkpuchi dị mma;
(2) Usoro ịwepụ mkpuchi mkpuchi. N'ime nnukwu mmepụta mmepụta ihe, ọ bụ ihe a na-apụghị izere ezere na ngwaahịa ndị na-erughị eru ga-apụta. Ya mere, ọ dị mkpa iji wepụ ihe mkpuchi Al na-erughị eru nachekwa ọzọya na-emebighị arụmọrụ nke ndọta NdFeB;
(3) Dabere na gburugburu ngwa ngwa a kapịrị ọnụ, magnetik NdFeB nwere ọtụtụ akara ule na ụdị. Ya mere, ọ dị mkpa iji mụọ ụzọ nchebe kwesịrị ekwesị maka ọkwa dị iche iche na ụdị;
(4) Mmepe nke akụrụngwa mmepụta. Usoro mmepụta kwesịrị iji hụ na nrụpụta ezi uche dị na ya, nke na-achọ ịmepụta ngwá ọrụ PVD kwesịrị ekwesị maka nchedo magnetik NdFeB na ịrụ ọrụ dị elu;
(5) Belata ọnụ ahịa mmepụta teknụzụ PVD ma melite asọmpi ahịa;
Mgbe ọtụtụ afọ nke nyocha na mmepe mmepụta ihe. Hangzhou Magnet Power Technology enweela ike ịnye ndị ahịa ngwaahịa PVD Al plated nnukwu. Dịka egosiri na eserese 7, foto ngwaahịa dị mkpa.
Ọgụgụ 7 NdFeB ndọta nwere ụdị dị iche iche.
Oge nzipu: Nov-22-2023
