Mhedzisiro yetitanium poda jekiseni rekugadzira sintering maitiro pakuita

Metal poda yakabikwaporouszvinhu zvinogadzirwa nesimbi kana alloy poda semidziyo yakabikwa uye inoumbwa uye inopiswa nekupisa. Izvo zvinhu zvine porous zvine chimiro chakasimba.

Maitiro ekugadzira: kuongorora - isostatic kudzvanya - vacuum yakakwirira tembiricha sintering

Zvimiro zvechimiro: Iyo zvinhu zvine huwandu hukuru hweakabatana kana semi-akabatana pores. Iyo pore chimiro inoumbwa nekuturika nguva dzose uye isina kujairika hupfu zvidimbu. Saizi uye kugoverwa kwema pores uye saizi ye porosity inogona kugadziridzwa zvinoenderana nehupfu particle saizi musanganiswa uye maitiro ekugadzirira. Sangana nezvinodiwa nevatengi chaizvo.

Zvibereko zvechigadzirwa: kupindirana kwakanaka, saizi inodzoreka pore uye pores, yakagadzikana chimiro, yakakwirira kusefa kurongeka, kupfeka kuramba, yakanaka mechanical zvivakwa, yakanaka thermal conductivity, kupisa kupisa, uye kupisa dissipation zvimiro, uye inogona kugezwa kumashure uye kushandiswa kakawanda.

Inoshanda maitiro etitanium sintered porous zvinhu:

1. 1) Uniform pore dhayamita, yakagadzikana pores, uye yakakwirira kupatsanurwa kugona.

1. 2) Yakakwira porosity, diki yekusefa kuramba uye yakanyanya kupinza kugona.

1. 3) Kugadzikana kwakanaka kwemakemikari, acid uye alkali corrosion resistance, uye anti-oxidation properties.

1. 4) Iyo morphological chimiro yakagadzikana, hapana zvidimbu zvinodonha, uye inosangana nezvinodiwa zvehutsanana hwekudya uye mishonga GMP.

1. 5) Yakanaka michina zvivakwa, yakaderera kudzvinyirira musiyano uye yakakura yekuyerera mwero.

1. 6) Iine simba rakasimba reantimicrobial uye haibatanidzi nema microorganisms.

1. 7) Inogona kuvandudzwa pamhepo, iri nyore kuchenesa uye ine hupenyu hurefu hwebasa.

1. 8) Yakanakisa biocompatibility, inogona kushandiswa zvakanyanya mubiological, chikafu, mishonga uye maindasitiri ekurapa.

1. 9) Yakanakisa electromagnetic wave inodzivirira kuita.

1. 10) Yakanaka yekunyorovesa maitiro uye kukanganisa kupikisa.

Sintering ndeimwe yeanonyanya kukosha maitiro muMIM maitiro. Iyo haingobvisi yakasara binder chete asiwo inobvisa pores pakati pehupfu zvidimbu, zvichiita kutiMIM chigadzirwagobvu zvakazara kana kuda kuzara. Thekudonha kwe titaniumalloy inoda kupisa kwakanyanya. Nzvimbo, iyo sintering process inofanirwa kuchengetedzwa neargon gasi zvakanyanya sezvinobvira. Iyo sintering nguva muyedzo iyi yakagadzirirwa kuchengetedza tembiricha isingachinji kwemaminetsi zana nemakumi maviri, uye tembiricha yepamusoro i1220 ℃, 1240 ℃, 1250 ℃, 1270 ℃ uye 1290 ℃ zvakateerana kune TC4 inodhonzwa zvikamu uye zvikamu zvakatenderera. Maumbirwo zvikamu zvakasiiwa.

Sintering maitiro eTC4 tensile zvikamu

Sintering maitiro ezvikamu zvakatenderera

Kubva pakuita sintering yezvikamu zvakatenderera, zvinogona kuoneka kuti kana TC4 ikatora maminetsi zana nemakumi maviri, densification yepamusoro inogona kuwanikwa pa1250 ° C, uye density inodzikira zvishoma sezvo tembiricha inowedzera. Izvi zvinodaro nekuti kukura kwezviyo kunoitika pakupisa kwakanyanya. Mikana iri pakati pemiganho yezviyo inovawo yakakura, izvo zvinoitawo kuti goho remukoho wezvikamu zvigadzikane zvidzikire kupfuura 1250°C mushure mekupisa kwakanyanya.

TC4 metallographic dhayagiramu pa1250 ℃

Sintered TC4 dzakatenderera zvikamu

Kuti tinzwisise hukama pakati petembiricha dzakasiyana uye nguva dzekubata uye TC4 sintering densification, takasarudza 1240 ° C, 1250 ° C uye 1270 ° C kuti tiite zviedzo sezvakaratidzwa pazasi. Iyo sintering mamiriro aive ese argon gasi nharaunda.

Iyo sintering atmosphere ndeye argon

Kugadziriswa kwedata uye kuongorora

Maererano nehuwandu hwemashoko emuenzaniso mushure mekupisa, hazvisi zvakaoma kuona kuti kuwanda kunowanikwa nekubata kutonhora pa 1250 ° C kwemaminetsi 120-180 yakakwirira kudarika iyo inowanikwa nemamwe maitiro. Zvichienderana nehukama pakati peiyo sintering process yeTC4 yakadhonzwa zvikamu uye sintered TC4 dzakatenderedza zvikamu, isu tinogumisawo kuti density yakakwira kupfuura iyo inowanikwa nemamwe maitiro. Iyo densification uye simba regoho rinoenderana, saka densification uye mechanical properties inowanikwa nekubata tembiricha pa1250 ° C ye120min ~ 180min ndiyo yakakwirira; Izvi zvinodaro nekuti yakanyanya tembiricha uye ipfupi nguva yekubata haigadzirise iyo titanium alloy sintering process. Titanium alloy makristasi anokwenenzverwa zvakanyanya. Saizvozvo, tembiricha yakaderera uye yenguva refu yekuchengetedza kupisa kuchaita kuti hupfu hwepamusoro hwekufambisa simba hurambe huchipedzwa nekuda kwekunonoka kupararira kwemiganhu yezviyo. Munguva yekufamba uye kupararira maitiro emiganhu yezviyo, kupindirana kwakanaka uye kutsvedza kwekristaro lattice hakugone kuwanikwa. Nenzira iyi, kuchine mamwe mapeji mukati asingagone kubviswa, zvichiita kuti zvisakwanise kuwana zvirinani densification.

mukupedzisa

Iyo maindasitiri maitiro eMIM titanium alloy yakaoma, uye kune zvakawanda zvinhu zvinokanganisa yekupedzisira densification uye michina zvimiro zvechigadzirwa. Pasi pemamiriro aya ekuyedza, mushure mekunyatsofunga nezve density yechigadzirwa uye michina zvivakwa, takashandisa HP yakakwira vacuum metal furnace kuti irambe ichinyura pa1250 ° C kwemaminetsi zana nemakumi maviri. Izvi zvinobvumira TC4 kuti ive nepamusoro density uye kuwana yakanyanya goho simba, kugadzira nzira yeindasitiri yeMIM-TC4.