Samarium Cobalt hlau nplaum muaj cov tshuaj lom neeg ruaj khov thiab ua haujlwm rau ntau daim ntawv thov yam tsis muaj kev kho deg. Kev tiv thaiv saum npoo yog txheej txheem tsim nyog rau cov hlau nplaum Neodymium, tshwj xeeb tshaj yog sintered Neodymium hlau nplaum. Sintered Neodymium hlau nplaum muaj ntau theem microstructure thiab muaj Nd2Fe14B theem tseem ceeb, Nd-nplua nuj theem, thiab B-nplua nuj theem. Nd-nplua nuj theem nthuav tawm muaj zog oxidation nyiam heev thiab yuav tsim cov roj teeb tseem ceeb nrog rau theem tseem ceeb hauv qhov chaw ntub dej. Ib qho me me ntawm cov khoom hloov pauv muaj peev xwm txhim kho cov tshuaj lom neeg ruaj khov ntawm cov hlau nplaum, tab sis tuaj ntawm tus nqi ntawm kev ua haujlwm sib nqus. Yog li ntawd, kev tiv thaiv ntawm sintered Neodymium hlau nplaum feem ntau yog tsom rau ntawm nws qhov chaw.
Kev kho deg ntawm sintered Neodymium hlau nplaum tuaj yeem muab faib ua cov txheej txheem ntub thiab qhuav. Cov txheej txheem ntub dej hais txog cov hlau nplaum yog cov txheej txheem kev tiv thaiv saum npoo hauv cov dej ntshiab, cov tshuaj inorganic, lossis cov tshuaj organic. Cov txheej txheem ntub dej uas nquag siv suav nrog phosphate, electroplating, electrolessplating, electrophoresis, txau txheej, thiab dip txheej. Cov txheej txheem qhuav hais txog cov hlau nplaum yog cov txheej txheem kev tiv thaiv saum npoo los ntawm kev siv lub cev lossis tshuaj lom neeg yam tsis muaj kev sib cuag nrog kev daws teeb meem. Cov txheej txheem qhuav feem ntau muaj lub cev vapor deposition (PVD) thiab tshuaj vapor deposition (CVD).
Nto kho kev faib tawm ntawm Sintered Neodymium Magnet
| Txheej | Thickness
(μm) |
Xim | SST
( teev) |
PCT
( teev) |
Yam ntxwv |
| BW-Zn | 4-15 | Xim xiav | Ntau dua lossis sib npaug li 24 | – | Qhov thib ob feem ntau siv ib txheej txheej. Tsis zoo corrosion kuj. |
| Xim-Zn | 4-15 | ci xim | Ntau dua lossis sib npaug li 48 | – | Corrosion kuj zoo dua BW-Zn. |
| Ni-Cu-Ni | 5-20 | Ci nyiaj | Ntau dua lossis sib npaug li 48 | Ntau dua lossis sib npaug li 48 | Feem ntau siv ntau txheej txheej txheej. Zoo heev humidity thiab ntsev tsuag kuj. |
| Electroless Ni | 5-20 | Tsaus nyiaj | Ntau dua lossis sib npaug li 72 | Ntau dua lossis sib npaug li 48 | Zoo heev humidity thiab ntsev tsuag kuj nrog uniform tsos. |
| Ni-Cu-Ni-Au | 5-20 | Golden | Ntau dua lossis sib npaug li 72 | Ntau dua lossis sib npaug li 96 | Cov khoom siv hluav taws xob zoo heev thiab kev ua haujlwm zoo nkauj. |
| Ni-Cu-Ni-Ag | 5-20 | Nyiaj | Ntau dua lossis sib npaug li 72 | Ntau dua lossis sib npaug li 96 | Cov khoom siv hluav taws xob zoo heev thiab kev ua haujlwm zoo nkauj. |
| Ni-Cu-Ni-Sn | 5-20 | Nyiaj | Ntau dua lossis sib npaug li 72 | Ntau dua lossis sib npaug li 96 | Zoo heev humidity kuj. |
| Phosphate | 1-3 | Tsaus grey | – | – | Kev tiv thaiv ib ntus. |
| Aluminium | 2-15 | Ci nyiaj | Ntau dua lossis sib npaug li 24 | Ntau dua lossis sib npaug li 24 | Nthuav txheej txheej. |
| Epoxy cob | 10-30 | Dub / Grey | Ntau dua lossis sib npaug li 72 | Ntau dua lossis sib npaug li 72 | Zoo heev humidity thiab ntsev tsuag kuj. Superir khi quab yuam. |
| Parylene | 5-20 | Tsis muaj xim | Ntau dua lossis sib npaug li 96 | – | Cov av noo zoo heev, tshuaj tsuag ntsev, corrosive vapors, thiab cov kuab tshuaj tiv thaiv. Dawb ntawm pore. |
| Everlube | 10-15 | Golden daj | Ntau dua los yog sib npaug rau 120 | Ntau dua lossis sib npaug li 72 | Zoo heev humidity kuj. |
| Teflon | 8-15 | Dub | Ntau dua lossis sib npaug li 24 | Ntau dua lossis sib npaug li 24 | Kub kub thiab rub tsis kam. Self-lubricant thiab 100% dej-pov thawj. |
| Nco tseg: muaj peev xwm tiv thaiv corrosion ntawm txheej kuj cuam tshuam los ntawm cov duab thiab qhov loj ntawm cov hlau nplaum. | |||||
Kev kho deg ntawm Bonded Neodymium Magnet
Ntxiv rau submicron grain qauv, isotropic yaj-spun NdFeB hmoov muaj me ntsis Nd-nplua nuj theem, yog li, nws cov corrosion kuj muaj zog ntau dua sintered Neodymium hlau nplaum. Txawm li cas los xij, compression molded hlau nplaum ua los ntawm isotropic yaj-spun NdFeB hmoov muaj cov porosity ntau dua thiab qee qhov feem ntawm cov hmoov zoo, yog li feem ntau siv electrophoretic epoxy txheej los yog tshuaj tsuag epoxy txheej kom paub txog kev tiv thaiv nto. Kev txhaj tshuaj molded hlau nplaum feem ntau tsis tas yuav kho qhov chaw.
Kev Tiv Thaiv Kev Ntsuas Kev Ntsuas ntawm Neodymium Magnet
Raws li cov khoom siv ua haujlwm, kev ua haujlwm ib puag ncig ntawm Neodymium hlau nplaum muaj nws qhov tshwj xeeb hauv kev sib piv nrog cov khoom siv xws li hlau. Kuj tseem muaj qhov ntsuas ntsuas sib txawv rau kev tiv thaiv txheej ntawm Neodymium hlau nplaum rau cov qauv kev tswj xyuas zoo, daim ntawv thov tsim, thiab cov xwm txheej. Cov kev ntsuas feem ntau suav nrog kev tiv thaiv corrosion, mechanical, thiab ib qho kev ntsuas ntsuas tsom rau kev siv ua haujlwm. Corrosion resistance index yog cov ntaub ntawv lossis cov qauv nkhaus los ntsuas qhov muaj peev xwm ntawm cov khoom siv rau cov tshuaj nruab nrab sib txawv. Kev ntsuas kub thiab av noo los yog kev ntsuas kub thiab av noo siab heev (HAST, lwm yam hu ua PCT) tuaj yeem ua tus yam ntxwv muaj peev xwm cais cov dej thiab chav dej. Tom qab ntawd cov tshuaj tsuag ntsev tuaj yeem siv los ntsuas qhov muaj peev xwm cais tawm rau electrolytes. Cov khoom kuaj niaj hnub ntawm cov khoom siv tshuab muaj cov kev sib tw quab yuam, kev sim hardness, hla hla kev xeem, kev sim poob, kev sim thermal cycling, thiab kev ntsuas thermal shock. Cov kev ua haujlwm ntxiv txuas ntxiv mus rau txheej tuab, cov khoom siv tshuaj tua kab mob, cov khoom nplaum, hluav taws xob conductivity, hnav tsis kam, roj tsis kam, thiab UV tsis kam.
Ntsej Tsuag Test
HAST
