Titanium alloys tau dav siv nyob rau hauv Aerospace, cov khoom lag luam hluav taws xob vim yog qhov tseem ceeb tshaj plaws rau kev ua kom tiav cov khoom lag luam tseem ceeb thiab ua kom muaj zog Kev ua kom zoo los txhim kho lub zog sib txuam ntawm titanium substrates thiab electroplated txheej txheem rau kev siv cov ntawv thov engineering.
Surface pretreatment is critical for enhancing adhesion. Mechanical sandblasting with 60-120 mesh abrasive particles effectively removes the passive oxide layer while increasing surface roughness, which can improve bonding strength by up to 3.2 times. However, for high-strength titanium alloys with hardness exceeding HRC 40, sandblasting yuav tsum tau ua tib zoo tswj qab 0 {} hydrogenation thiab flualination txheej, tsim kom muaj kev hloov pauv ntawm Ti-Ti-Ti-Ti-Ti-utectic qauv uas txhim kho Interfacial Bonding Zog rau 28 MPA. Fluorination nrog nacr₂o₇-hf cov kev daws teeb meem tsim cov txheej txheem tif₃ / tiomb, cov qauv honeycomb, txhim kho kev sib xyaw nrog cov txheej.
Cov nyiaj tso tawm ntawm cov khaubncaws sab nraud povtseg ntxiv ntxiv dag zog rau kev tawm tsam nrog rau 98% N / mm².} Electroless npib npib tsib xee, tso nyiaj rau NiCo₄, tso nyiaj rau Ni-Pల Intermetallic sib xyaw, ua tiav lub zog shear ntawm 45 MPa. Cov hloov pauv txheej txheej ua raws li kev siv hluav taws xob zoo, Bridging lub titanium substrate thiab txheej kawg.
Kev kho mob tom qab ua ib lub luag haujlwm tseem ceeb ntawm kev txhim kho kev kho kom zoo nkauj ntawm 300}} pakuv nce adhesion rau lub siab tshaj aitm d3359 qib d3359 cov txheej txheem thermal no tau cuam tshuam ntxiv cov txheej txheem kev ntseeg siab.
Rau cov ntawv thov tshwj xeeb, cov txheej txheem tsim qauv pom zoo {} Pre}}}} Kev plees ua ke, thiab kev siv tus nqi ntau dua, txo tus nqi los ntawm 30% {{.} Cov khoom siv tau ua rau ib puag ncig hnyav yuav tsum tau ua kom tsis muaj fluorination thiab flash Nickel tsis kam los ntawm ib qho ntawm tsib.
Kev nthuav tawm thev naus laus zis, xws li atomic txheej tso nyiaj (ALD) rau cov txheej txheem ntsuas hluav taws xob thiab cov txheej txheem tshiab rau cov txheej txheem no ua tiav cov nplaum ua kom zoo dua rau kev ua haujlwm tshwj xeeb, ua kom muaj kev ntseeg tau thiab ruaj khov ntawm titanium alloy hauv kev xav tau ib puag ncig.
