Microstructures, solid solution formation and high-temperature mechanical properties of ZrB2 ceramics doped with 5 vol.% WC
Microstructures, solid solution formation and high-temperature mechanical properties of ZrB2 ceramics doped with 5 vol.% WC
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微观结构，%20固体%20溶液%20形成%20和%20高温%20机械%20性能%20of%20ZrB2%20陶瓷%20掺杂%20with%205%20vol.%%20WC
DOI：
10.1016/j.matdes.2015.05.038
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发表时间：
2015-09
影响因子：
8.4
通讯作者：
Fang-Fang
中科院分区：
文献类型：
--
作者：
Hai-Bin Ma;Zhen-Yong Man;Ji-Xuan Liu;Fang-Fang
采用2100℃热压法制备了体积分数为%WC(ZW)的ZrB_2(ZB)和ZrB_2-5(ZW)。采用实验和理论相结合的方法，研究了钨(W)元素与ZrB_2和ZRC的固溶体。实验上，X射线衍射仪和能谱仪支持了ZW样品中固溶体的形成。理论上，采用基于密度泛函计算的原子尺度计算机模拟来解释不同固溶量和晶格参数的变化。在室温至1600℃范围内测量了样品的弯曲强度，ZB和ZW的弯曲强度随测试温度的升高而变化不同。然后，ZB的强度从344±10.12 Mpa增加到1281±0.39 Mpa，约为室温强度的3.7倍。进一步升高温度会导致强度下降。而ZW的强度从室温到1600℃不断提高。用扫描电子显微镜和透射电子显微镜分析了ZB和ZW断口和晶界的不同机制。
ZrB2(ZB) and ZrB2–5 vol.% WC (ZW) were prepared by hot-pressing at 2100 °C. Combining experimental and theoretical methods, the tungsten (W) element in solid solution with ZrB2and ZrC was investigated. Experimentally, solid solution formation in ZW samples was supported by XRD and EDS. Theoretically; atomic scale computer simulations based on density functional calculations were used to interpret the different amount of solid solution and the changes in lattice parameters. The flexural strength of the samples was measured from room temperature to 1600 °C. The flexural strength of ZB and ZW changed differently as testing temperature increased. Then, the strength of ZB increased from 344 ± 12 MPa to 1281 ± 39 MPa, which is about 3.7 times of room temperature strength. Further temperature increasing led to strength decreasing. While for ZW, the strength increased continuously from room temperature to 1600 °C. SEM and TEM techniques were employed to clarify the different mechanism of fracture surfaces and grain boundaries of ZB and ZW.
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影响因子：
8.4
作者：
D. Sciti;L. Pienti;A. Murri;E. Landi;V. Medri;L. Zoli
通讯作者：
D. Sciti;L. Pienti;A. Murri;E. Landi;V. Medri;L. Zoli
影响因子：
3.9
作者：
Sumin Zhu;W. Fahrenholtz;G. Hilmas;S. Zhang
通讯作者：
Sumin Zhu;W. Fahrenholtz;G. Hilmas;S. Zhang
影响因子：
5.7
作者：
Peter A. Williams;R. Sakidja;J. Perepezko;P. Ritt
通讯作者：
Peter A. Williams;R. Sakidja;J. Perepezko;P. Ritt
DOI：
10.4028/www.scientific.net/amr.105-106.203
发表时间：
2010-04
期刊：
Advanced Materials Research
影响因子：
--
作者：
Hai Long Wang;Shi Xun Zhang;Deliang Chen;Q. Han;Hongxia Lu;Hongliang Xu;Chang-An Wang;Rui Zhang
通讯作者：
Hai Long Wang;Shi Xun Zhang;Deliang Chen;Q. Han;Hongxia Lu;Hongliang Xu;Chang-An Wang;Rui Zhang
DOI：
10.1007/bf00775428
发表时间：
1969-08
期刊：
Soviet Powder Metallurgy and Metal Ceramics
影响因子：
--
作者：
K. I. Portnoi;M. Levinskaya;V. Romashov
通讯作者：
K. I. Portnoi;M. Levinskaya;V. Romashov