Novel nano-crystalline Er2O3 hydrogen isotopes permeation barriers
Novel nano-crystalline Er2O3 hydrogen isotopes permeation barriers
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DOI：
10.1016/j.jeurceramsoc.2016.07.035
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发表时间：
2017
影响因子：
5.7
通讯作者：
Q. Li;Jie Wang;Q. Xiang;Kai Yan;T. Tang;Yongchu Rao;Jiang-Li Cao
中科院分区：
文献类型：
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作者：
Q. Li;Jie Wang;Q. Xiang;Kai Yan;T. Tang;Yongchu Rao;Jiang-Li Cao
氢同位素防渗层（HIPB）在热核聚变能、氢能、石油工业、真空太阳能接收器等领域中用于减少氢同位素的渗透和泄漏。本研究采用溶胶-凝胶法制备了晶粒尺寸为5-10 nm的纳米Er_2O_3 HIPB。研究了它们的透氘率降低因子（D-PRF）、微观结构、力学性能和电学性能。0.2 μm纳米晶Er 2 O3 HIPB在700 °C时D-PRF达到300，透氘128 h后D-PRF没有下降。在700 °C下渗氘128 h后，结合强度和纳米硬度分别稳定在13 N和10 GPa左右。纳米Er 2 O3 HIPB的形貌和微观结构在128 h的氘渗透后没有明显变化，保证了其稳定的D-PRF和力学性能。然而，纳米晶体Er 2 O3 HIPB的电阻率在700 °C的氘渗透后下降。电阻率从9 × 109Ω cm开始下降超过3个数量级，然后趋于稳定，这可能是由于氧的损失或氘的侵入。
Hydrogen Isotopes permeation barriers (HIPB) are used to reduce hydrogen isotopes permeation and leakage in the fields such as thermonuclear fusion energy, hydrogen energy, petroleum industry and vacuum solar receiver. In this study, nano-crystalline Er2O3HIPB with about 5–10 nm grain size were made by sol-gel method. Their performances, including deuterium-permeation reduction factor (D-PRF), micro-structure, mechanical property and electrical property were reported. The D-PRF of 0.2 μm nano-crystalline Er2O3HIPB reached 300 at 700 °C and did not deteriorate after 128 h deuterium permeation. The bonding strength and the nano-hardness steadily remained about 13 N and 10 GPa after 128 h deuterium permeation at 700 °C, respectively. The morphology and micro-structures of the nano-crystalline Er2O3HIPB showed no measurable changes after 128 h deuterium permeation, which ensured the stable D-PRF and mechanical properties. However, the electrical resistivity of the nano-crystalline Er2O3HIPB decreased after deuterium permeation at 700 °C. The electrical resistivity decreased from 9 × 109Ω cm by over three orders of magnitude and then tended to be stable, which might be attributed to oxygen loss or deuterium invasion.