臺灣博碩士論文加值系統

本研究探討在不同極化電場下含卜作嵐材料之0-3型鋯鈦酸鉛(PZT)水泥壓電複合材料的顯微結構、壓電性質與老化性質，其中PZT總體積占50%，膠結材有純水泥或含取代水泥體積20%的卜作嵐材料，卜作嵐材料包括矽灰、水淬爐石粉和F級飛灰三種。以80MPa壓製壓電複合材料試體，於90℃水槽內養護7天，在溫度150℃極化45分鐘，極化電場有0.5kV/mm、1kV/mm 及1.5kV/mm。
實驗結果顯示，試體極化後1天至10天內的壓電性質變化較大，10天至14天變化較小，在14天後的壓電性質會穩定下來。添加飛灰試體的極化電壓增幅速率最快，添加爐石粉試體次之，而添加矽灰試體最慢，因此矽灰試體的電壓增幅時間必須拉長。然而，矽灰水泥壓電複合材料因具有較高的介電性與緻密性，在1.5kV/mm極化電場時的壓電應變常數d33值最高可達34.43pC/N，爐石水泥壓電複合材料次之，兩者都可以提升壓電應變常數；但添加飛灰之水泥壓電複合材料並無法提高水泥試體的壓電應變常數。因添加飛灰的電容值會降低，使水泥壓電複合材料的壓電電壓常數上升，因此添加飛灰的水泥壓電複合材料可以提高壓電電壓常數，壓電電壓常數g33值可達23.7mVm/N，比純PZT壓電陶瓷的壓電電壓常數還高。加入卜作嵐材料後，水泥壓電複合材料的機械能與電能的轉換能力會稍微降低。不論有無添加卜作嵐材料，提高極化電場都會增加水泥壓電複合材料的壓電應變常d33值與壓電電壓常數g33值，但在低極化電場如0.5kV/mm及1kV/mm時，添加矽灰之水泥壓電試體的阻抗頻譜反應不明顯，導致極化不完全。

In this study, the microstructure and piezoelectric properties of 0-3 type PZT cement-based piezoelectric composite containing pozzolanic materials under different poling fields are investigated, where PZT is the inclusion with 50% volume fraction and the binders include 50% cement or a mixture of 40% cement and 10% pozzolanic materials in volume. Three pozzolanic materials were used containing silica fume, blast furnace slag and F grade fly ash. The composite was applied to three poling fields including 0.5kV/mm, 1kV/mm and 1.5kV/mm, respectively. The 0-3 type cement-based piezoelectric composites were produced by applying 80MPa to form disk samples with 15mm in diameter and 2mm in thickness. The specimens were put in 90℃ water for 7 days. After curing, the samples were poled at 150℃ for 45 minutes.
Experimental results showed that, after the polarization, piezoelectric properties of the specimen changed obviously from 1 day to 10 days, and then the change became small in 10 to 14 days, finally piezoelectric properties were stable after 14 days. Within the polarization, the composites containing fly ash show the shortest increasing rate of voltage, blast furnace slag specimen is the second, and silica fume specimen has the longest voltage increasing rate to be poled. However, the silica fume specimen owns high dielectric properties and good dense structures, and it can be help to enhance piezoelectric strain constant d33 values up to 34.43pC/N. The blast furnace slag cement-based piezoelectric composites also can increase the piezoelectric strain constant, but no increase for fly ash cement-based piezoelectric composites compared with PZT/cement composites without pozzolanic materials. The value of piezoelectric voltage constant g33 for fly ash cement-based piezoelectric composites is 23.7mVm/N, higher than PZT piezoelectric ceramics. The electro-mechanical coupling factor reduces if PZT/cement composites containing pozzolanic materials. Piezoelectric properties increase with increasing poling fields for all specimens. For silica fume cement-based piezoelectric composites undergone lower voltages such as 0.5kV/mm and 1kV/mm, impendence-frequency spectrums showed less reactions, that is, the polarization is incomplete.

中文摘要 I
英文摘要 II
誌 謝 III
目 錄 IV
表目錄 VI
圖目錄 VII
符號說明 XI
第一章、緒 論 1
1.1、研究動機 1
1.2、研究目的 2
1.3、研究方法 2
1.4、研究流程 3
第二章、文獻回顧 4
2.1、水泥及卜作嵐材料 4
2.1.1、水泥 5
2.1.2、卜作嵐材料 5
2.1.3、水化與卜作嵐反應 7
2.2、壓電材料 8
2.2.1、壓電材料特性 10
2.2.2、壓電材料極化 10
2.2.3、壓電特性參數 12
2.3、水泥壓電複合材料 12
2.3.1、2-2型水泥壓電複合材料 13
2.3.2、1-3型水泥壓電複合材料 22
2.3.3、0-3型水泥壓電複合材料 28
第三章、實驗計畫 43
3.1、實驗目的 43
3.2、實驗材料 43
3.3、實驗變數 47
3.3.1、固定條件 47
3.3.2、變數條件 48
3.4、儀器設備 48
3.5、試體製作與養護 55
3.6、極化技術 59
3.7、微觀結構 61
3.8、壓電性質量測與計算 62
第四章、結果與討論 65
4.1、齡期及老化 65
4.2、卜作嵐材料的影響 72
4.3、極化電場影響 76
4.4、顯微結構分析 84
第五章、結論與建議 100
5.1、結論 100
5.2、建議 101
參考文獻 102
口試照片 105
作者簡歷 106

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