(Ceramic kune Metal Assmebled ChikamuProduced byWintrustek)
I.Overview yeCeramic-to-Metal Welded Zvikamu
Ceramic-to-metal welded componentszvikamu zvezvimiro zvinobatsira zvinoshandisa sophisticated welding process kupa simba rakakwirira, kusimba kwegasi, uye kuvimbika kwemagetsi/kupisa kubatanidza pakati peceramic nesimbi zvinhu. Iwo anowanzo shandiswa mumashandisirwo anoda kusimba kune yakanyanya tembiricha, kumanikidza, kana vacuum mamiriro.
II. Active Metal Brazing Technology
1. Mazano Anokosha Ounyanzvi
Active metal brazing inoshandisa reactive elements (titanium, zirconium, hafnium, vanadium, etc.) mubrazing filler kuti iite kemikari nemakeramiki, zvichiita kuti pave nekemikari yakasungirirwa layer paceramic-metal interface. Izvi zvinhu zvinoshanda zvine kukwezva kukuru kweokisijeni, nitrogen, uye kabhoni. Kupisa muvacuum kana inert atmosphere inogadzira nanoscale reaction layer (semuenzaniso, TiO₂, TiN, TiC) panzvimbo dzeceramic. Izvi zvinobvumira kunyura nesimbi yakanyungudutswa yekuzadza, zvichikonzera yakavimbika "ceramic-reaction layer-braze joint-metal" bond.
2. Key Process Parameters
2.1 Brazing Filler Metal System:
Ag-Cu-Ti: Indasitiri mwero, yakanakisa kuita kwakazara
Cu-Ti: Mutengo wakaderera, wakakwira-tembiricha kuramba
Au-Ni-Ti: Kuvimbika kwepamusoro, zvikumbiro zvemuchadenga
Silver-Yemahara Solder: Yemidziyo yemagetsi inoda kudzivirira kutama kwesirivha
2.2 Kudzora Maitiro:
Zvinodiwa Zvemagariro: High vacuum (
Kudzora Tembiricha: 20–50°C pamusoro solder liquidus (800–900°C yeAg-Cu-Ti system)
Kudzora Nguva: Maminetsi akati wandei kusvika maminetsi makumi maviri, kuyera kuita kuzara uye interface layer ukobvu
2.3 Maitiro:
Pre-kurapwa: Kunyatsocheneswa kweceramics uye metallization kurapwa; kubviswa kwe oxide layers kubva kusimbi components
Gungano: Kuungana chaiko kwema ceramics, simbi, uye inoshanda solder foil (0.05-0.2 mm)
Vacuum Brazing: Kubvisa → Kudziya kwakarongwa → Kubata tembiricha → Kudzora kutonhora
Mushure mekurapa: Kucheneswa uye kuongorora kwekutanga
III. Helium Misa Spectrometer Leak Detection Technology
1. Kudikanwa kwekuonekwa kwaLeak
Ceramic-metal welded components anoshandiswa mu-high-demand applications senge vacuum systems uye aerospace equipment. Iva nechokwadi chekuti vanozadzisa zviri pedyo- "sealing sealing" maitiro (kubvinza kwemitengo
2. Detection Principle
Uchishandisa helium seyo tracer gasi, nzira yacho inotora mukana weiyo diki mamorekuru saizi, inert hunhu, uye yakaderera kumashure. Helium inopinda mu mass spectrometer kuburikidza nekuvuza, inoiswa ionized, inoparadzaniswa nemagnetic field, uye inoonekwa neine nyanzvi yekuona. Simba rechiratidzo rinoenderana neiyo helium yemukati, ichibvumira iyo chaiyo leak rate kuverenga.
3. Main Detection Methods
Nzira 1: Nzira yekufemba (Local Leak Detection)
Maitiro:
Iko mukati meiyo workpiece inobviswa uye yakabatanidzwa kune inodonha detector.
Nzvimbo yekunze yeweld inoongororwa nepfuti yehelium spray.
Masaini anotariswa munguva chaiyo kuti anyatso tsvaga nzvimbo dzekuvuza.
Hunhu:Inokodzera kutsvaga kudonhedza muzvikamu zvidiki, yakanyanya senitivity.
Nzira 2:Helium Hood/Enclosure Method (Yakazara Chisimbiso Kutendeseka Ongororo)
Maitiro:
Iyo workpiece yakazadzwa nehelium uye yakaiswa mukati mevacuum hood, kana yekunze hood / sniffer inoshandiswa pakuona.
Yakaunganidzwa kana kutiza helium inoonekwa.
Hunhu:Inoyera huwandu leak rate; yakakodzera kune yakaoma structural components.
4. Kushanda Kwemafambiro Ekushanda (Kushandisa Nzira Yekufema SeMuenzaniso)
4.1 Kugadzirira chikamu:
Workpiece yekuchenesa, kuenzanisa kwemidziyo, uye kusimbiswa kwezvakatipoteredza helium kumashure.
4.2 Kuitwa kwekuona:
Iyo workpiece yakabatana kune leak yekuona sisitimu uye inosimudzwa kune inoshanda kumanikidza.
Kupfapfaidza kweHelium kunotanga kana kudzvanywa kwehurongwa kunosvika ≤0.1 Pa (spray pfuti kureba: 1-2 cm, kumanikidza: 0.1-0.2 MPa).
Yakarongeka scanning padivi pe weld seam, nekutarisa kune nzvimbo dzakanyanya kupisa kushushikana.
4.3 Data Analysis:
Alarm inoridzwa kana chiyero chekuvuza chikadarika chikumbaridzo (semuenzaniso, 1×10⁻⁹ Pa·m³/s).
Mapoinzi ekuvuza anomakwa, uye mamiriro ekuona uye data zvinorekodhwa.
4.4 Kuongororazve uye Kuzivisa:
Kuongororazve mushure mekugadzirisa, kuteverwa nekugadzirwa kwemushumo wakakwana wekuedza.
5. Special Thinking and Standards
Ceramic-Specific Adaptations: Tarisa pakuona microcrack matunhu anokonzerwa nekupisa kwekuwedzera kusawirirana.
Sensitivity Grading: Yakasarudzwa zvichienderana nendima yekushandisa; Zvinodiwa zvegiredhi remuchadenga zvinogona kusvika nhanho dzakaomarara se10⁻¹² Pa·m³/s.
Kuteerera kwakaringana: Kutevedzera mitemo yenyika/chiuto, ASTM, kana indasitiri-yakanangana nezvinodiwa.
Kutadza Ongororo: Microstructural ongororo, senge metallographic sectioning uye scanning electron microscopy (SEM), for leak points over the standards.
Wintrustek inoitisa helium kuvuza bvunzo kune yega ceramic kune simbi zvikamu. Ndokumbira utarise pazasi link yekutarisa kune yedu leak rate bvunzo:
https://youtu.be/Et3cTV9yD_U?si=Yl8l7eBH5rON7I_f
IV. Mamiriro Ekushandisa Akajairika
Power Electronics Packaging: Kubatana pakati peceramic substrates (AlN/Al₂O₃) uye mhangura yemhangura mumamodule eIGBT.
Vacuum System Zvisimbiso: Ceramic-kune-simbi zvisimbiso mune particle accelerators uye semiconductor midziyo.
Aerospace: Injini sensors uye spacecraft yekuisa chisimbiso windows.
Simba uye Optoelectronics: Fuel cell interconnects uye yakakwirira-simba laser packaging.
V. Pfupiso
Active metal brazing ndiyo nzira yekutanga yekugadzira inovimbikaceramic-kune-simbimajunctions, ane helium mass spectrometer leak yekuona ichishanda sechiyero chegoridhe chekusimbisa hermeticity. Iko kusanganiswa kweaya matekinoroji maviri kunovimbisa kuvimbika kwenguva refu kwezvikamu zvakashongedzwa mumamiriro ezvinhu akaoma. Mumashandisirwo chaiwo, zvakakosha kukwidziridza maparamendi ekugadzirisa uye kusarudza nzira dzakakodzera dzekuona kuvuza uye mazinga ekunzwa zvichienderana nechimiro cheworkpiece, hunhu hwezvinhu, uye zvido zvekushandisa. Iyi nzira inogadzira yakavharwa-loop yemhando yekudzora system inomhanya kubva pakugadzira kuenda kune yekuongororwa.
