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林业科学 ›› 2004, Vol. 40 ›› Issue (2): 113-118.doi: 10.11707/j.1001-7488.20040220

• 论文及研究报告 • 上一篇    下一篇

纳米压痕技术测量管胞次生壁S_2层的纵向弹性模量和硬度

江泽慧 余雁 费本华 任海青 张泰华   

  1. 中国林业科学研究院木材工业研究所,北京100091;中国科学院力学研究所非线性力学国家重点实验室,北京100080
  • 收稿日期:2002-08-26 修回日期:1900-01-01 出版日期:2004-03-25 发布日期:2004-03-25

Using Nanoindentation Technique to Determine the Longitudinal Elastic Modulus and Hardness of Tracheids Secondary Wall

Jiang Zehui,Yu Yan,Fei Benhua,Ren Haiqing,Zhang Taihua   

  1. Research Institute of Wood Industry, CAF Beijing100091;State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences Beijing100080
  • Received:2002-08-26 Revised:1900-01-01 Online:2004-03-25 Published:2004-03-25

摘要:

重点研究和详细介绍了利用纳米压痕技术测试管胞次生壁S2 层纵向弹性模量以及硬度的实验技术,并测试了人工林杉木早晚材管胞S2 层的纵向弹性模量和硬度。结果表明:杉木晚材管胞S22 层的平均纵向硬度为0.390GPa ,弹性模量的平均值为14.844GPa ;早材管胞S2层的硬度和模量则小于晚材,平均值分别为0.306GPa和9.823GPa。

关键词: 纳米压痕技术, 管胞, 弹性模量, 硬度

Abstract:

The detailed experimental procedure of using nanoindentation technique to determine the longitudinal elastic modulus and nano hardness of tracheids secondary wall was emphasized, base on which the longitudinal mechanical properties of Chinese Fir tracheids were measured. It was indicated both hardness and elastic modulus of latewood secondary wall were higher than earlywood cell wall. The longitudinal elastic modulus and hardness of latewood tracheids S2 layer were 14.844Gpa and 0.390Gpa respectively, while and earlywood cell wall S2 layer had a corresponding value of 9.823 and 0.306Gpa.

Key words: Nanoindentation technique, Tracheids, Elastic modulus, Hardness