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DKDP表面潮解对其机械性能影响的研究
Applied Physics 应用物理, 2014, 4, 95-100
Published Online June 2014 in Hans. /journal/app
/10.12677/app.2014.46013
The Effects of DKDP Surface Deliquescence
on Its Mechanical Properties
Zhongkai He, Zhiqiang Cao, Qianru Yang
Department of Physics, University of Science and Technology Beijing, Beijing
Email: msof@163.com
th nd th
Received: May 8 , 2014; revised: June 2 , 2014; accepted: June 10 , 2014
Copyright © 2014 by authors and Hans Publishers Inc.
This work is licensed under the Creative Commons Attribution International License (CC BY).
/licenses/by/4.0/
Abstract
This deliquesced surface of DKDP, deuterated potassium dihydrogen phosphate, was studied with
microscopes Raman spectroscopy and Nano-indentation. Two Raman spectra were acquired at the
surface of the specimen before and after it was deliquesced. Modulus and hardness were meas-
ured with Nano-indentation under 6 different loads. Discrete deliquesced spots were observed on
the surface with an optical microscope. Results show that the Raman spectra, before and after de-
liquesced, are almost the same. No new products are created after deliquesced and it is not a
chemical change. 6 Loads are 10 g, 20 g, 30 g, 40 g, 50 g and 60 g. The measured modulus and
hardness vary with increased loads and their variation trends are nearly identical. Before 40 g, the
modulus decreases with the load from 54.7 GPa to 46GPa (hardness from 1.95 GPa to 1.50 GPa).
From 40 g to 60 g, the modulus raised up to 53 GPa again (hardness raised up to 1.67 GPa). Thus,
the mechanical properties of the deliquesced surface have been modified.
Keywords
DKDP, Deliquescence, Raman Spectroscopy, Nano-
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