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超高重力場(chǎng)燃燒合成TiB2基陶/304不銹鋼疊層復(fù)合材料
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中國(guó)人民解放軍軍械工程學(xué)院,中國(guó)人民解放軍軍械工程學(xué)院,中國(guó)人民解放軍軍械工程學(xué)院,中國(guó)人民解放軍軍械工程學(xué)院

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TB331

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Laminated Composite of TiB2-based Ceramic to 304 Stainless Steel Achieved by Combustion Synthesis in Ultra-high Gravity Field Method
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    摘要:

    采用超高重力場(chǎng)燃燒合成技術(shù)，通過陶瓷和不銹鋼之間的熔化連接與原子互擴(kuò)散，制備出界面具有化學(xué)成分梯度特征的TiB2基陶瓷/1Cr18Ni9Ti不銹鋼復(fù)合材料。因超高重力場(chǎng)燃燒合成工藝具有“爆燃”的特性以及超高重力場(chǎng)所形成的高溫真空環(huán)境，使得不銹鋼表面發(fā)生部分熔化，進(jìn)而實(shí)現(xiàn)了陶瓷/不銹鋼的熔化連接。經(jīng)XRD、FESEM 及EDS 分析發(fā)現(xiàn)，接頭界面連接良好，并因原子的強(qiáng)烈互擴(kuò)散在界面過渡區(qū)形成了三維網(wǎng)絡(luò)陶瓷/金屬梯度復(fù)合結(jié)構(gòu)。經(jīng)測(cè)試發(fā)現(xiàn)，維氏硬度值與陶瓷基體至不銹鋼基底測(cè)試距離的關(guān)系曲線呈近似拋物特征。同時(shí)，復(fù)合材料的界面剪切強(qiáng)度達(dá)到325±25 MPa，其界面斷裂模式是由TiB2片晶沿晶斷裂和Fe-Ni-Cr合金相延性斷裂的混合模式組成。

    Abstract:

    Based on fusion bonding and atomic interdiffusion between the ceramic and stainless steel, the TiB2-based ceramic/1Cr18Ni9Ti stainless steel composite with chemical composition gradient was produced by combustion system in ultra-high gravity field (CSUGF). The presence of chemical reaction in explosive combustion and the subsequent thermal-vacuum circumstance induced by liquid products in ultra-high gravity make stainless steel partially fused, resulting in the achievement of fusion bonding. XRD, FESEM and EDS results show that the interface has a good bonding, and the intermediate exhibits three dimensional network ceramic-metal graded microstructure considered as a result of intensive interdiffusion of atomics. Vickers hardness profile reveals the quasi-parabola relationship of the hardness to the testing distance from the ceramic matrix to the steel substrate. Meanwhile, interfacial shear fracture of the composite presents the mixed mode consisting of intercrystalline fracture along TiB2 platelets and ductile fracture in Fe-Ni-Cr alloy, presenting interfacial shear strength 325±25 MPa.

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尹德軍,趙忠民,路曉波,鄭堅(jiān).超高重力場(chǎng)燃燒合成TiB2基陶/304不銹鋼疊層復(fù)合材料[J].稀有金屬材料與工程,2017,46(8):2119~2122.[Yin Dejun, Zhao Zhongmin, Lu Xiaobo, Zheng Jian. Laminated Composite of TiB2-based Ceramic to 304 Stainless Steel Achieved by Combustion Synthesis in Ultra-high Gravity Field Method[J]. Rare Metal Materials and Engineering,2017,46(8):2119~2122.]
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  • 收稿日期:2015-07-14
  • 最后修改日期:2015-09-20
  • 錄用日期:2015-10-13
  • 在線發(fā)布日期: 2017-11-16
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