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題 名 | 快速原型技術製作鈦組織支架模型=Fabrication Titanium Tissue Scaffold Model by Rapid Prototyping Technique |
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作 者 | 周志維; 劉福興; 黃德言; 李瑞宗; 劉育亨; | 書刊名 | 龍華科技大學學報 |
卷 期 | 32 2012.06 [民101.06] |
頁 次 | 頁1-8 |
分類號 | 446.8924 |
關鍵詞 | 快速原型; 鈦; 支架模型; Rapid prototyping; Titanium; Scaffold model; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究使用自行製作的快速原型系統,以 120W的 Nd:YAG 雷射進行燒結,將 300 mesh 鈦粉末及二氧化矽溶膠以 2.3g:1g的比例混合成漿料,以雷射頻率、掃描速度及電流大小為製程變數。選擇性雷射凝膠技術(SLG),是一種快速原型技術,利用疊層加工技術,能夠製作出較複雜形狀的支架模型,可以成功的製造出多孔鈦支架,其特徵為互連通孔、高孔隙率、可改變孔隙大小。將雷射燒結完成之試片,經不同溫度熱處理,以 SEM觀察其表面形貌,EDX分析其成份。實驗結果顯示以雷射頻率 16KHz、掃描速度 70mm/s、電流大小 10.6A、耗時 3hr,即可完成鈦組織支架模型。機械性質測試結果顯示,未熱處理的機械強度,其抗彎強度為 2.424MPa、抗壓強度為 31.71MPa,經由高溫熱處理至 900℃能大幅提高機械強度,其抗彎強度為70.11MPa、抗壓強度為 156.25MPa。 |
英文摘要 | This study applied the rapid prototyping technology with the Nd: YAG laser for sintering titanium powder and silica sol, which are mixed in a proportion of 2.3 to 1, into slurry. The laser frequency rates, scanning speed and current control are the varying parameters. SLG, a rapid prototyping technique, applies layer additive processing approach to create artificial bones with complex shapes. With features such as interconnecting pore size, high porosity and controlled pore size, porous titanium scaffold was able to be made successfully. After being sintered, the heat treatment process was done to the specimens at different temperatures. Then, the surface morphology was inspected using SEM for analyzing the ingredients of the specimens. Experiment was conducted with the frequency of laser of 16 KHz, the scanning speed of 70mm / s, the current of 10.6A and the required time of 3hr to complete the titanium tissue scaffold model. The mechanical properties of the specimens without heat treatment were tested. The bending strength and the compressive strength are found to be 2.424MPa and 31.71Mpa, respectively. If the specimens were heat-treated to 900℃, the mechanical strength can be improved substantially. The bending strength and the compressive strength can be increased to 70.11MPa and 156.25Mpa, respectively. |
本系統中英文摘要資訊取自各篇刊載內容。