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激光功率對(duì)Al2O3-ZrO2共晶陶瓷成形質(zhì)量的影響
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國(guó)家自然科學(xué)基金 (51175061)；國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃 (2009CB724307)


Influence of Laser Power on the Forming Quality of Al2O3-ZrO2 Eutectic Ceramic
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    摘要:

    采用激光近凈成形系統(tǒng)成形了Al2O3-ZrO2(Y2O3)共晶陶瓷，研究了激光功率對(duì)成形形貌以及陶瓷內(nèi)部裂紋、氣孔的影響規(guī)律，利用X射線衍射儀和掃描電鏡對(duì)樣件進(jìn)行相成分分析和微觀組織觀察。研究表明，相對(duì)較高的激光功率可以得到裂紋以及氣孔較少的陶瓷樣件；陶瓷樣件具有緊湊排列的胞狀共晶組織，亞微米級(jí)t-ZrO2(Y2O3)纖維均勻分布在胞狀共晶組織內(nèi)部。由于激光近凈成形加工具有層層堆積的特點(diǎn)，微觀組織呈現(xiàn)出垂直于沉積方向的周期性帶狀組織

    Abstract:

    Al2O3-ZrO2(Y2O3) eutectic ceramics were produced by a laser engineered net shaping system. We preliminarily explored the law of forming morphology, internal cracks and pores of the ceramics with the change of laser power. X-ray diffractometer analysis and scanning electron microscopy observation were carried out for the sample phase composition and microstructure, respectively. The research indicates that higher laser power can get less internal cracks and pores of ceramic samples. The microstructure shows a well-ordered cellular eutectic structure made up by a homogeneous distribution of very fine submicron levels t-ZrO2(Y2O3) fibers embedded in the cellular. Periodic banded structure appears in the vertical direction of deposition due to the characteristics of layer by layer accumulation by laser engineered net shaping processing

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吳東江,張垚磊,牛方勇,馬廣義,孫 貝,康仁科.激光功率對(duì)Al2O3-ZrO2共晶陶瓷成形質(zhì)量的影響[J].稀有金屬材料與工程,2014,43(11):2814~2818.[Wu Dongjiang, Zhang Yaolei, Niu Fangyong, Ma Guangyi, Sun Bei, Kang Renke. Influence of Laser Power on the Forming Quality of Al2O3-ZrO2 Eutectic Ceramic[J]. Rare Metal Materials and Engineering,2014,43(11):2814~2818.]
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  • 收稿日期:2013-11-15
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  • 在線發(fā)布日期: 2015-04-07
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