取向对径向分布函数的影响

依据实验结果导出的径向分布函数（ＲＤＦ），因实验测量和数据处理误差引入的误差称作“误差畸变”，如峰形宽化，峰面积改变，峰位移动以及假峰出现等。ＲＤＦ是建立在非晶材料结构各向同性和均匀性假设基础上的。因此当非晶材料存在取向各向异性时，其ＲＤＦ出现一种比误差畸变更为严重的“取向畸变”，它将导致ＲＤＦ的解释出现严重错误。讨论了这种“取向畸变”特征。关键词：

EFFECT OF ORIENTATION ON RADIAL DISTRIBUTION FUNCTION

The errors may be introduced in the process of measurement and evaluation for preparing radial distribution function (RDF), They will cause the error distortion that RDF can be partly upset. RDF method is based on structual isotropy of amor-phous materials, however, a structural anisotropy, i.e orientation, hes been found in amorphous polymeric, inorganic and metallic materials. The orientation will greatly affect RDF, and will lead to a new distortion that RDF may be wholly upset. Obvirously, if it is not given due regard, a misinterpretation on RDF can occur. The feature of the so-called orientation distortion is discussed in the present paper.