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Ni含量對(duì)TiN-Ni金屬陶瓷高溫抗氧化性能的影響
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作者單位:

1.中國(guó)科學(xué)院上海硅酸鹽研究所;2.上海航天控制技術(shù)研究所

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中圖分類(lèi)號(hào):

基金項(xiàng)目:

國(guó)家自然科學(xué)基金資助(51671209)


Effect of Ni Content on the High-Temperature Oxidation Resistance of TiN-Ni Cermets
Author:
Affiliation:

1.Shanghai Institute of Ceramics,Chinese Academy of Sciences;2.Shanghai Aerospace Control Technology Institute

Fund Project:

the National Natural Science Foundation of China (51671209)

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    摘要:

    采用熱壓燒結(jié)方法,分別制備了三種含Ni 30vol%、50vol%以及70vol%的TiN-Ni金屬陶瓷,研究了TiN-Ni金屬陶瓷在800℃靜態(tài)空氣中的連續(xù)氧化行為。結(jié)果表明,燒結(jié)過(guò)程中,TiN相與Ni相之間無(wú)化學(xué)反應(yīng),調(diào)整Ni含量有助于燒結(jié)致密化,其中TiN/70Ni致密度最高,可達(dá)99.6%,有助于強(qiáng)化其高溫抗氧化性。對(duì)氧化膜進(jìn)行掃描電鏡(SEM)、能譜分析(EDS)以及X射線衍射(XRD)分析,系統(tǒng)地研究了TiN-Ni復(fù)合材料的高溫氧化機(jī)理,分析表明氧化過(guò)程分為快速氧化過(guò)程和慢速氧化過(guò)程,其中存在金屬離子的外擴(kuò)散和氧離子的內(nèi)擴(kuò)散。

    Abstract:

    Three kinds of TiN-Ni cermets containing Ni 30vol%, 50vol% and 70vol% were prepared by hot pressing sintering method. The continuous oxidation behavior of TiN-Ni cermet at 800 C in static air was studied. The results show that there is no chemical reaction between the TiN phase and the Ni phase during the sintering process, and the adjustment of Ni content contributes to the densification of sintering. The density of TiN/70Ni is the highest, up to 99.6%, which helps to strengthen its high temperature oxidation resistance. Scanning electron microscopy (SEM), energy spectrum analysis (EDS) and X ray diffraction (XRD) were used to study the mechanism of high temperature oxidation of TiN-Ni composites. The oxidation process was divided into rapid oxidation process and slow oxidation process, in which the external diffusion of metal ions and internal diffusion of oxygen ions existed.

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段航,墨洪磊,仇榮生,陳?ài)?劉巖. Ni含量對(duì)TiN-Ni金屬陶瓷高溫抗氧化性能的影響[J].稀有金屬材料與工程,2020,49(2):595~599.[Duan Hang, Mo Honglei, Qiu Rongsheng, Chen Xie, Liu Yan. Effect of Ni Content on the High-Temperature Oxidation Resistance of TiN-Ni Cermets[J]. Rare Metal Materials and Engineering,2020,49(2):595~599.]
DOI：10.12442/j. issn.1002-185X. QH20190038

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  • 收稿日期:2019-03-19
  • 最后修改日期:2019-04-22
  • 錄用日期:2019-10-23
  • 在線發(fā)布日期: 2020-03-12
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