53. Preferred orientation of pyrolytic graphites and its effect on X-ray diffraction patterns

✍ Scribed by O.J Guentert; S Cvikevich

• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 116 KB
• Volume: 1
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(64)90343-4

✦ Synopsis

and A. Ragoss (Siemens-Planiawerke AG ftir Kohlefabrikate, Meitingenliiber Augsburg-Bundesrepublik Deutschland). The graphitization process of various cokes above all soft ones and of polycrystalline carbons made of them has been studied. Besides the changes of the usually determined physical properties as real density, electrical resistivity, thermal expansion and Young's modulus the evaluation of crystalline ordering parameters is described. The crystalline growth and the distortion is followed by studying the line profiles using the method of Warren and collaborators. These data shall accomplish the few ones published until now and shall open the possibility of correlating these crystalline ordering parameters to the well-known physical properties of polycrystalline carbon on different heat-treatments, and the behaviour of these graphites on neutron irradiation. First results obtained by high-temperature X-ray diffraction are described.