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泡沫铝复合材料负压渗流工艺的研究及缺陷分析.docx

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泡沫铝复合材料负压渗流工艺的研究及缺陷分析 Abstract Thenegativepressureinfiltrationprocessoffoamaluminumcompositematerialsisanimportantmeansofpreparinghigh-performancematerials.Inthispaper,theresearchprogressofnegativepressureinfiltrationtechnologyforfoamaluminumcompositematerialswasreviewed,andthedefectsintheprocesswereanalyzed.Itwasfoundthattheselectionofinfiltrationprocessparameters,thepreparationofpreformmaterialsandthecontrolofinfiltrationqualitywerethekeyfactorsaffectingtheperformanceoffoamaluminumcompositematerialspreparedbynegativepressureinfiltration.Thefuturedevelopmenttrendsofnegativepressureinfiltrationtechnologyforfoamaluminumcompositematerialswerealsodiscussed. Introduction Foamaluminumcompositematerialshavethecharacteristicsofhighspecificstrength,goodenergyabsorptionanddampingproperties,whicharewidelyusedinaerospace,automobile,transportationandotherfields.Thenegativepressureinfiltrationprocessisanimportantmeansofpreparinghigh-performancefoamaluminumcompositematerials.Byusingthisprocess,theporesofthefoammaterialscanbefilledwithothermaterials,andthemechanicalpropertiesandsurfacepropertiesofthefoammaterialscanbeimproved. ResearchProgressofNegativePressureInfiltrationTechnology Negativepressureinfiltrationtechnologyisanewandpowerfulpreparationmethodforfoamaluminumcompositematerials.Theprocessisbasedontheprincipleofcapillaryinfiltration,andthevacuumstateisusedtopreciselycontroltheinfiltrationdepthandinfiltrationrate.Withthedevelopmentofmaterialscienceandtechnology,theinfiltrationmaterialshavealsochangedfromtraditionalmetalstopolymers,ceramics,andevenbiomaterials.Thefollowingisasummaryoftheresearchprogressofnegativepressureinfiltrationtechnologyforfoamaluminumcompositematerialsinrecentyears. (1)Optimizationofinfiltrationprocessparameters Theinfiltrationprocessparameters,suchasvacuumdegree,infiltrationtemperature,infiltrationtimeandpressuredifference,haveagreatinfluenceontheinfiltrationqualityandtheperformanceoffoamaluminumcompositematerials.Manyresearchershavecarriedoutin-depth