資源描述：
《燒結(jié)工藝和粘結(jié)劑對(duì)sic網(wǎng)絡(luò)結(jié)構(gòu)陶瓷性能的影響 畢業(yè)論文》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、燒結(jié)工藝和粘結(jié)劑對(duì)SiC網(wǎng)絡(luò)結(jié)構(gòu)陶瓷性能的影響摘要碳化硅泡沫陶瓷具有氣孔率高、熱穩(wěn)定性好等優(yōu)良性能,被廣泛用作金屬溶液過濾器、高溫氣體和離子交換過濾器、催化劑載體等.重點(diǎn)介紹了碳化硅泡沫陶瓷的種類,闡述了碳化硅泡沫陶瓷的制備方法和影響碳化硅泡沫陶瓷產(chǎn)品性能的因素,展望了碳化硅泡沫陶瓷的發(fā)展前景.本文主要闡述了SiC基泡沫陶瓷的結(jié)構(gòu)、性能、制造工藝和應(yīng)用前景。使用了有機(jī)前驅(qū)體浸漬法制備SiC基泡沫陶瓷，通過比較在不同條件下（不同粘結(jié)劑含量和燒成溫度保溫時(shí)間）試樣的常溫耐壓強(qiáng)度、熱震穩(wěn)定性、容重和孔隙率等性能參數(shù)，并用掃描電鏡（SEM）對(duì)泡沫陶瓷顯微結(jié)構(gòu)進(jìn)行了形貌分析，系統(tǒng)的分析實(shí)驗(yàn)條件對(duì)
2、試樣的影響。實(shí)驗(yàn)結(jié)果表明：SiC基泡沫陶瓷在1450℃時(shí)的燒結(jié)保溫3小時(shí)比保溫2小時(shí)和4小時(shí)的熱震次數(shù)多和抗壓強(qiáng)度高；粘結(jié)劑的加入能夠有效提高坯體的掛漿效果，較高溫度燒結(jié)會(huì)導(dǎo)致燒結(jié)體產(chǎn)生大量玻璃相，降低其耐火度和高溫強(qiáng)度，但是不利于SiC基泡沫陶瓷的綜合性能參數(shù)。在1450°C保溫3個(gè)小時(shí)粘結(jié)劑加入量為8%的SiC基泡沫陶瓷抗壓強(qiáng)度為0.632MPa，900℃加熱、20℃水急冷其熱震次數(shù)高達(dá)16次。燒結(jié)溫度為1450℃時(shí)制備的SiC基泡沫陶瓷過濾器具有較好的綜合性能。關(guān)鍵詞：泡沫陶瓷，SiC，粘結(jié)劑，保溫時(shí)間，抗熱震性，抗壓強(qiáng)度，VSinteringProcessandBinderon
3、thesic-basedFoamCeramicsAbstractSiliconcarbidefoamceramicwithgoodperformancesuchashighporosity，excellentthermalstability，itiswidelyusedassolutionofmetalfilters，high-temperaturegasesandionexchangefilters，catalystsupport,andsoon.Thetypeofsiliconcarbidefoamceramicarefocusedinthisarticle,thepreparat
4、ionmethodsofsiliconcarbidefoamceramicandfactorsthataffecttheperformanceofsiliconcarbidefoamceramicproductareintroduced，andthesiliconcarbidefoamcera-mic'sprospectsareexpected.ThispaperdescribesthestructureofSiC-basedceramicfoam,performance,manufacturingprocessesandapplications.Organicprecursoruse
5、dinimpregnationSiC-basedceramicfoam,bycomparingthedifferentconditions(differentbindercontentandsinteredatdifferenttemperatures)samplesatroomtemperaturecompressivestrength,thermalshockstability,bulkdensityandporosityandotherperformanceparametersAndbyscanningelectronmicroscopy(SEM)onthemicrostruct
6、ureoftheceramicfoammorphology,systematicanalysisoftheimpactofexperimentalconditionsonthesample.Experimentalresultsshowthat:SiC-basedceramicfoamsinteredat1450℃andheatpreservationtimewas3hisbetterthanheatpreservationtimewas2hand4hthansinteringthermalshockandhighcompressivestrengthmoreoften;bindera
7、ddedtoimprovegreenbodyhangingplasmaeffect,hightemperaturesinteringWillleadtoalargeamountofsinteredglassphase,refractorinessandhightemperaturereducethestrengthofSiC-basedceramicfoamisnotconducivetothecomprehensiveperformancep
