Mmetụta nke ntụ ntụ gbanwere mgbakwunye na usoro mmepụta nke NdFeb oghere.
Iji mepụta NdFeb nke na-arụ ọrụ dị elumagnet na-adịgide adịgideihe, anyị ga-achịkwa size nke airflow-egweri magnetik ntụ ntụ irighiri, nke mere na size nke magnetik ntụ ntụ ahụ na 2.5 ~ 5μm gụrụ ihe karịrị 95%.Xinfeng Magnet chọpụtara na usoro a nwere ike ime ka ọ dịkwuo mma site n'ịgbakwunye ihe mgbakwunye mgbanwe ntụ ntụ pụrụ iche na usoro igwe igwe ikuku.
Ihe mgbakwunye ntụ ntụ gbanwetụrụ kwesịrị inwe ọrụ ngwakọta, ya bụ: (1) ọrụ mgbochi oxidation;(2) Meziwanye ọrụ mmiri mmiri ntụ ntụ;(3) Gbochie combustion uzuzu, ya bụ inflaming retarding ọrụ.Ọnụ ego nke mgbakwunye bụ ihe dịka 0.035% ~ 0.05% (paction mass) nke ntụ ntụ magnetik, nke a na-agbakwụnye n'otu oge na ntụ ntụ magnetik na ebe nri igwe ikuku.
Ihe mgbakwunye bụ ngwakọta organic nke nwere ọtụtụ akụkụ, nwere otu lipophilic, ya bụ agbụ hydrocarbon, nwere obere otu pola, dị ka otu lipid, nke mere na agbụ hydrocarbon nwere ogologo yinye kwesịrị ekwesị.Ngwakọta ntụ ntụ magnetik na-agbakọ ugboro ugboro ma na-emetụ ihe mgbakwunye na usoro ikuku na-egweri, nke mere na a na-ekpuchi elu akụkụ nke ọ bụla na oyi akwa nke ihe nkiri mgbakwunye na ọkpụrụkpụ nke ihe dịka 5 ~ 8nm.Ọ na-arụ ọrụ ndị a: (1) gbochie ntụ ntụ ntụ ntụ site na ikuku, na-arụ ọrụ nke mgbochi oxidation;(2) Na-ebelata mmetụta magnetostatic n'etiti ntụ ntụ ntụ, belata agglomeration n'etiti ntụ ntụ ntụ, na-arụ ọrụ nke dispersant;(3) Mee ka mmiri na-agagharị agagharị nke ntụ ntụ ntụ ma rụọ ọrụ nke mmanu mmanu;(4) Ọ bara uru na nhazi nke ntụ ntụ ntụ na oghere magnet, nke nwere ike imeziwanye nhazi ahụ;Enwere ike ịbawanye BR site na 0.02-0.04 T, yana ngwaahịa ike magnetik (BH) m nwere ike ịbawanye n'otu aka ahụ.Ekwesiri iburu n'uche na okpomọkụ na-agbanwe agbanwe nke ihe mgbakwunye a bụ 350 ℃.Sintering okpomọkụ kwesịrị ka a na-ẹkenịmde na 400-420 ℃ maka oge, nke mere na mgbakwunye nwere ike hapụ na magnet, ka ọ ghara carburize.
Ọnọdụ ndị dị mkpa maka imepụta magnetik NdFeb na-adịgide adịgide dị elu.
Iji nweta ezigbo nghazi nke magnetik, Xinfeng magnet bịara ná nkwubi okwu mgbe ọtụtụ afọ nke nnwale na ntinye nzaghachi na ahịa ndị ahịa na-eji na ọ dị mkpa iji mee sintered NdFeb magnetik ntụ ntụ iji mezuo ihe ndị a chọrọ ka ngwaahịa ndị dị elu nwee ike. ka emee ya, ma naanị ihe eji eme ọgwụ dị mma, ọgwụ ahụ ga-aka mma.(1) The powder urughuru size bụ obere (3 ~ 4μm), na size nkesa bụ warara, ya bụ, chọrọ nke 3 ~ 4μm ahụ ruru 95%, enweghị ihe na-erughị 1μm ma ọ bụ karịa 7μm ahụ, ka. hụ na ihe niile ahụ bụ otu kristal.(2) The irighiri nke ntụ ntụ bụ okirikiri ma ọ bụ mkpokọta okirikiri.(3) Nrụrụ kristal nke ntụ ntụ ntụ kwesịrị ịdị ntakịrị ka o kwere mee.(4) Mgbe etipịa, ọ dị mma na-agbaji tinyere crystal ogbo, na-agbalịsi ike nweta n'elu nke ọ bụla urughuru nwere Rich Nd frasi, nke na-atọ ntọala maka mmiri mmiri na-adọ sintering n'azụ na-egbochi omume nke klas ⅱ ọka ókè.(5) Ihe ndị na-adịghị ọcha na gas adsorbed n'elu ntụ ntụ ntụ kwesịrị ịdị ntakịrị dị ka o kwere mee, karịsịa ikuku oxygen kwesịrị ịdị ntakịrị.Ya mere, a ga-eme usoro nkwadebe ntụ ntụ na nchekwa dị elu nke ikuku inert ma ọ bụ ọnọdụ oghere, iji gbochie kọntaktị magnetik ntụ ntụ na ikuku oxygen ma ọ bụ iru mmiri.N'elu ise ọnọdụ dị mkpa maka n'ichepụta elu àgwà sintered NdFeb na-adịgide adịgide magnetik, enweghị nke ọ bụla bụ na-achọsi ike, dị ka mfe, n'ezie onye ọ bụla nwere ike ime zuru okè adịghị mfe, Xinfeng magnetik dị njikere ịrụkọ ọrụ ọnụ na ndị mmadụ si n'akụkụ nile nke ndụ. mepụta ngwaahịa zuru oke, ma gbalịsie ike inye ndị ahịa ọrụ ndị dị mma karịa.
Ọhụụ ọhụrụ Xinfeng Magnet na-eme ka mmanye nke ndọta NdFeb siri ike.
Mmanye bụ otu n'ime akụkụ ọrụ aka dị mkpa nke magnet na-adịgide adịgide.Ịbawanye mmanye nwere ike ịbawanye nnukwu ngwaahịa ike magnetik nke magnet, melite nguzogide demagnetization nke magnet na-adịgide adịgide a na-eji, ma melite nkwụsi ike ya.Ka ọ dị ugbu a, na nkwadebe nke dị ọcha ternary sintered NdFeb na-adịgide adịgide magnetik, teknuzu magnetik Njirimara na theoretical ụkpụrụ, na remanence BR eruwo 96.27% nke usoro iwu uru, na nnukwu magnetik ike ngwaahịa BH eruola 91.5% nke usoro iwu ya. uru.Agbanyeghị, ike mmanye eruola naanị 12% nke uru usoro iwu ya.Ọ bụ nnukwu ikike iji melite ike mmanye ya, a ka nwere nnukwu mmụba na mbara igwe.Xinfeng magnet na-arụsi ọrụ ike maka nke a.
Nke mbụ, mmanye nke magnet nwere ike imeziwanye nke ọma site n'iji akụkụ Dy na Tb dochie Nd.Otú ọ dị, n'ime akụrụngwa ígwè dị ụkọ n'ụwa, Dy na Tb dị ntakịrị na ọdịnaya ma dị oke ọnụ, na Dy na Tb nwere ike ịgbakwunye na nha anya.Nke abụọ, mgbakwunye nke ụfọdụ ihe metal dị ka AL, Nb, Ga, Ti, Zr, Mo, wdg, mgbe ihe ndị a na-abanye n'ime kristal, a na-emeziwanye microstructure na usoro nhazi nke ọma, ma na-abawanye mmanye nke magnet.Nke atọ, ike mmanye nke magnet nwere ike imeziwanye nke ọma site n'ịgbakwunye ihe na iji obere okpomọkụ sintering ma ọ bụ okpukpu abụọ alloy usoro iji belata nkezi kristal nha.
Na-esote, Xinfeng magnet ga-anọgide na-arụsi ọrụ ike iji melite nnukwu ngwaahịa ike magnetik nke sintered NdFeb, ma na-enye ngwaahịa dị mma maka ndị ahịa mgbe niile.
Oge nzipu: Jul-12-2018