指晶体粒子的边界。
The crystal grain boundary of V2O5 films was melted and disappeared as increasing the deposition temperature, and the crystalline V2O5 films can be obtained by deposition at >300℃.
而衬底温度升高促进薄膜晶体颗粒长大、熔结，晶粒边界消失，在较高衬底温度(300～400℃)，得到连续的结晶性能良好的V_2O_5薄膜。
参考来源 - 钒氧化物薄膜的微观结构和变色性能的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
当晶粒尺寸减少时，晶粒边界或界面的体积分数有很大的增加。
As the grain size decreases, there is a significant increase in the volume fraction of grain boundaries or interfaces.
而在含有大量缺陷的晶粒边界，存在六角氮化硼的成核与生长。
The presence of hexagonal BN was due to defects within the grain boundaries of the underlying polycrystalline diamond substrates.
图17示意了用电子显微镜扫描出的沿晶粒边界产生的氢脆裂纹。
Figure 17 is a scanning electron microscope view of a typical hydrogen embrittlement crack where separation occurs along grain boundaries.
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