...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Multilayered polycrystallization in single-crystal YSZ by laser-shock compression
【24h】

Multilayered polycrystallization in single-crystal YSZ by laser-shock compression

机译：激光冲击压缩法在单晶YSZ中进行多层多晶化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A single shot of an ultra-intense laser with 0.8 J of energy and a pulse width of 110 fs (peak intensity of 1.15 x 10(17) W cm(-2)) is divided into two beams and the two beams counter-irradiated onto a 0.5 mm-thick single crystal yttria-stabilized zirconia (YSZ), changing the YSZ into a multilayered polycrystalline state. The laser-driven shock wave of the intensity similar to 7.6x10(12) Pa penetrated the crystal as deep as 96 mu m, causing formation of a four-layered structure (the first layer from the surface to 12 mu m, the second from 12 to 28 mu m, the third from 28 to 96 mu m, and the fourth from 96 to 130 mu m, respectively). The grain size of the first layer was 1 mu m, while that of the second layer was broken into a few tens nanometers. The grain size of the third layer was a few hundred nanometers to a few ten micrometers. The area deeper than 96 mu m remained as a single crystal. The plasma heat wave might remelt the first layer, resulting in the grain size becoming larger than that of the second layer. The surface polycrystallization seems to maintain the residual stresses frozen in the film thickness direction. Our experimentally observed spatial profile of the grain size can be explained by this shock and heat waves model.
机译：能量为0.8 J，脉冲宽度为110 fs（峰值强度为1.15 x 10（17）W cm（-2）的超强激光）的单光束分为两束，两束被反向照射在厚度为0.5 mm的单晶氧化钇稳定的氧化锆（YSZ）上，将YSZ更改为多层多晶态。强度类似于7.6x10（12）Pa的激光驱动冲击波穿透了96微米深的晶体，从而形成了四层结构（第一层从表面到12微米，第二层从表面到第二层。 12至28微米，第三至28至96微米，第四至96至130微米）。第一层的晶粒尺寸为1μm，而第二层的晶粒尺寸为几十纳米。第三层的晶粒尺寸为几百纳米至几十微米。深度大于96微米的区域仍然是单晶。等离子体热波可能使第一层熔化，导致晶粒尺寸变得比第二层大。表面多晶似乎保持了在膜厚度方向上冻结的残余应力。我们通过实验观察到的晶粒尺寸空间分布可以通过这种冲击波和热波模型来解释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号