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| Effect of Methane Concentration on Twins in CVD Polycrystalline Diamond Film |
| ZHU Hong-xi1,2,WU Song1,HUANG Li-long1,WEN Cheng-fang1,XU Su-fang1,LI Jia1 |
1. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China
2. Collaborative Innovation Center of Nonferrous Metals, Henan Province, Laoyang 471023, Henan,China |
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Abstract The surface morphology, texture and grain boundary distribution of CVD free-standing diamond film were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). It is shown that the preparation atmosphere with lower purity induced a number of twins in diamond film, the frequency of twins increased with the raise of methane concentration, which brought an increased effect on the texture. {100} texture was turned to {122} texture by the high frequency twins, but {511} and {411} textures were not found, indicating that the changed twin orientations were selective to some extent.
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Received: 10 December 2012
Published: 24 February 2014
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Corresponding Authors:
ZHU Hong-Xi
E-mail: zhuhx2004@126.com
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2014, Vol. 32 
