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W-Ni/Yb2O3復(fù)合材料的制備及燒結(jié)性能研究
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合肥工業(yè)大學(xué),合肥工業(yè)大學(xué),合肥工業(yè)大學(xué),合肥工業(yè)大學(xué),合肥工業(yè)大學(xué),合肥工業(yè)大學(xué),合肥工業(yè)大學(xué)

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國家重點基礎(chǔ)研究發(fā)展計劃（973計劃）;國家自然科學(xué)基金項目（面上項目，重點項目，重大項目）


Preparation and sintering performance of W-Ni/Yb2O3 composite materials
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Hefei University of Technology,Hefei University of Technology,Hefei University of Technology,Hefei University of Technology,Hefei University of Technology,Hefei University of Technology,Hefei University of Technology

Fund Project:

PetroChina Natural Gas & Pipeline Company (Oil & gas 1107-2)

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    摘要:

    本文首先采用化學(xué)鍍獲得Ni-Yb2O3復(fù)合粉體，然后通過機(jī)械球磨制備了不同成分的W-（0.2、0.5、1、2）wt% Ni/Yb2O3復(fù)合粉末，最后在1600℃下燒結(jié)3h獲得了W-Ni/Yb2O3復(fù)合材料。采用場發(fā)射掃描電子顯微鏡(FE-SEM)研究分析了Ni-Yb2O3復(fù)合粉體形貌、W-Ni/Yb2O3復(fù)合材料表面形貌。測定了W-Ni/Yb2O3復(fù)合材料相對密度、顯微硬度和熱導(dǎo)率。實驗結(jié)果表明，W-Ni/Yb2O3復(fù)合材料的相對密度和顯微硬度隨著Ni-Yb2O3含量增加而增加，Ni-Yb2O3的加入促進(jìn)了鎢基材料的燒結(jié)致密化；同時，添加Ni-Yb2O3復(fù)合粉使鎢基材料的晶粒得到細(xì)化，但對鎢基材料導(dǎo)熱性起到降低的作用。

    Abstract:

    In this paper, Ni coated Yb2O3 composite powder was obtained by electroless plating. The W-Ni/Yb2O3 composite powder dispersed with different contents of Ni coated Yb2O3 composite powder was first fabricated by the mechanical alloying (MA) process, the powder was then pressed and sintered at 1600 ?C for 3 hours. Surface morphology of Ni coated Yb2O3 composite powder and the W-Ni/Yb2O3 composite material were observed by FE-SEM. Relative density, microhardness and thermal conductivity of W-Ni/Yb2O3 composite material were tested. The results show that the relative density and microhardness of W-Ni/Yb2O3 composite material enhance with the increase of Ni-Yb2O3 contents, and the addition of Ni coated Yb2O3 composite powder promotes the sintering densification of W-Ni/Yb2O3 composite material. At the same time, the addition of Ni coated Yb2O3 composite powder makes the grain size of tungsten based material refined, but reduces its thermal conductivity.

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引用本文

羅來馬,趙美玲,王爽,譚曉月,朱曉勇,昝祥,吳玉程. W-Ni/Yb2O3復(fù)合材料的制備及燒結(jié)性能研究[J].稀有金屬材料與工程,2016,45(12):3181~3185.[luo laima, Meiling Zhao, Shuang Wang, Xiaoyue Tan, Xiaoyong Zhu, Xiang Zan, Yucheng Wu. Preparation and sintering performance of W-Ni/Yb2O3 composite materials[J]. Rare Metal Materials and Engineering,2016,45(12):3181~3185.]
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  • 收稿日期:2014-09-11
  • 最后修改日期:2014-09-24
  • 錄用日期:2014-10-30
  • 在線發(fā)布日期: 2017-02-06
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