Taw qhia
Nrog lub siab -precision laser txiav tshuab, koj tuaj yeem ua ntau tshaj li cov qauv hlau thiab ceramics. Hlau -ceramic composites qhib txoj hauv kev tshiab rau kev tsim khoom. Cov lus qhia no suav nrog hom kev sib xyaw tsim nyog rau kev txiav laser, lawv cov ntawv thov, thiab cov lus ceeb toom tseem ceeb txhawm rau txhim kho kev tsim khoom.
Ntsiab Cai
Feem ntau cov laminated, infiltrated, skeleton-inforced, thiab gradient composites tuaj yeem yog laser txiav.
Siab - lub zog fiber ntau lasers raug pom zoo rau cov phaj tuab, thaum UV lossis picosecond lasers yog qhov zoo tshaj plaws rau cov ntawv nyias thiab cov khoom me me.
Cov ntaub ntawv uas muaj qhov sib txawv ntawm thermal expansion loj, siab porosity, los yog brittleness heev yuav tsum tau ceev faj tsis txhob tawg los yog chipping.
1. Laminated Composites
Feem ntau thiab yooj yim txiav, tsim los ntawm stacking los yog bonding ceramic nplooj ntawv nrog hlau txheej.
Piv txwv:
Al₂O₃ + Cu / Stainless Hlau → Nqus substrates, hluav taws xob vaj tsev
Si₃N₄ + Cu / Ti → IGBT thiab AMB substrates
AlN + Cu → High-thermal- conductivity hluav taws xob substrates
ZrO₂ + Ti / Ni → Sensors thiab cov khoom siv kho mob
SiO₂ + Ti / Steel → Aerospace sealing Cheebtsam
2. Infiltrated los yog Sintered Composites
Hlau infiltrates ib lub pob txha ceramic, tsim kom muaj cov qauv ruaj khov haum rau laser txiav.
Piv txwv:
SiC + Al / Mg → Aerospace cua sov dab dej
Al₂O₃ + Cu / Ag → High-thermal{2}} conductivity electrodes
WC + Co / Ni → Cemented carbides
3. Particle-Reinforced Hlau Matrix Composites
Ceramic hais embedded nyob rau hauv ib tug hlau matrix, feem ntau du mus txiav. Cov hlau nqus cov laser, thaum cov khoom yaj los yog vaporize, txo qhov chipping.
Piv txwv:
Al + SiC → Aerospace hluav taws xob cua sov dab dej
Mg + SiC / Al₂O₃ → Structure Cheebtsam
Cu + Al₂O₃ / ZrO₂ → High-lub zog conductive electrodes
4. Cov khoom ua haujlwm tau zoo
Kev nthuav dav thermal maj mam txo qis kev ntxhov siab, ua rau laser txiav kev nyab xeeb thiab tawg -dawb, feem ntau siv rau siab - qhov kub thiab txias aerospace Cheebtsam.
Piv txwv:
Al₂O₃ → Kovar
SiC → Ti
ZrO₂ → Stainless hlau
5. Metallized Ceramics
Mo-Mn metallized ceramics thiab Ag-Cu-Ti nquag-braze sib dhos tuaj yeem ua laser txiav rau cov qauv, qhov, thiab cov qhov. Tsis txhob overheating lub braze seam.
Piv txwv:
Mo-Mn metallized Al₂O₃ → Brazed ceramic Cheebtsam
Ag-Cu-Ti active-braze assemblies
Tsis pom zoo los yog siv ceev faj
Siab -porosity ua npuas ncauj ceramics + hlau → nquag hlawv, chipping, deformation
Cov khaubncaws sab nraud povtseg tuab heev uas tsis muaj gradients → thermal mismatch, kev pheej hmoo tawg
Composites uas muaj tsawg-melting-point iav → bubbling, delamination
