s達(dá)到1.53T,最大磁導(dǎo)率μmax達(dá)到2630。"/>

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直接噴墨打印成形鐵磁軟磁材料的工藝研究
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北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院,北京科技大學(xué)新材料技術(shù)研究院

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TB31

基金項(xiàng)目:

國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)51274039)


Preparation of Ferromagnetic Soft Magnetic Material by Direct Inkjet Printing Process
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Institute for Advanced Material Technology,University of Science and Technology Beijing,Institute for Advanced Material Technology,University of Science and Technology Beijing,Institute for Advanced Material Technology,University of Science and Technology Beijing,Institute for Advanced Material Technology,University of Science and Technology Beijing

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    摘要:

    本文以羰基鐵粉為原料,用DISPER-Y220為分散劑,制備出粘度為0.55Pa.s,流動(dòng)性良好的料漿,以此料漿作為打印“墨水”,利用直接噴墨打印成形技術(shù)制備純鐵軟磁材料制件。噴頭直徑分別以0.5mm、0.8mm和1.0mm打印零件,打印成形后通過(guò)脫脂和燒結(jié)制備出制件。結(jié)果表明：分散添加量為1wt%時(shí),料漿粘度最低,隨著固含量的增大,料漿粘度變大,隨著剪切速率的增大,料漿表現(xiàn)為剪切變稀特征；噴頭直徑為0.8mm所打印的燒結(jié)體,表面粗糙度最低,其Ra為0.8μm；在1300℃保溫2h燒結(jié)后,噴頭直徑為0.5mm的燒結(jié)體致密度最高,為96.3%,其磁飽和感應(yīng)強(qiáng)度Bs達(dá)到1.53T,最大磁導(dǎo)率μmax達(dá)到2630。

    Abstract:

    In this paper, carbonyl iron powder and DISPER-Y220 are used as raw material and dispersant, respectively. The viscosity of slurry is detected as 0.55 Pa ? s and the slurry has good flowability slurry to be a printing ink. The ferromagnetic soft magnetic workpieces are prepared by direct inkjet printing process with the nozzle size of 0.5mm, 0.8mm and 1.0mm respectively, and then the samples printed have been through degreasing and sintering. The results showed that the viscosity of the slurry is lowest when the dosage of dispersant is1wt% and the viscosity of the slurry is increased with the solids content and shear rate increased .The slurry is shear thinning over the shear rate .The sintered body printed with the nozzle size of 0.8mm has a lowest surface roughness of 0.8μm. After sintered at 1300 ℃ for 2h ,the sintered body printed with the nozzle size of 0.5mm has a relative density of 96.3%, the saturation magnetization (BS ) and the maximum magnetic permeability (μmax ) reaching to 1.53T and 2630, respectively.

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任向遠(yuǎn),邵慧萍,鄭航,張樂(lè).直接噴墨打印成形鐵磁軟磁材料的工藝研究[J].稀有金屬材料與工程,2018,47(2):606~611.[Ren Xiangyuan, Shao Huiping, Zheng Hang, Zhang Le. Preparation of Ferromagnetic Soft Magnetic Material by Direct Inkjet Printing Process[J]. Rare Metal Materials and Engineering,2018,47(2):606~611.]
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  • 收稿日期:2015-12-18
  • 最后修改日期:2016-04-22
  • 錄用日期:2016-05-18
  • 在線發(fā)布日期: 2018-03-15
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