Potential application of electron work function in analyzing fracture toughness of materials
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2017年第10期
论文作者：Hao Lu Chenxin Ouyang Xianguo Yan Jian Wang Guomin Hua D.Y.Li
文章页码：1128 - 1133
摘 要：Fracture toughness determines materials’ resistance to fracture, which is measured often using impact or bending tests. However, it is difficult to evaluate fracture toughness of coatings and small samples.In this article, using white irons as sample materials, we explore a possible approach of using electron work function(EWF) as an indicator in evaluating fracture toughness of hard metallic materials. This parameter is promising for being utilized to analyze toughness of protective coatings and small objects as well as bulk materials. Through comparison with results obtained from impact tests and elastic modulus measurement, effectiveness of this EWF approach is demonstrated.
Hao Lu1，Chenxin Ouyang1,2，Xianguo Yan3，Jian Wang1,3，Guomin Hua1，D.Y.Li1
1. Department of Chemical and Materials Engineering, University of Alberta2. College of Materials Science and Engineering, Donghua University3. School of Mechanical Engineering, Taiyuan University of Science and Technology
摘 要：Fracture toughness determines materials’ resistance to fracture, which is measured often using impact or bending tests. However, it is difficult to evaluate fracture toughness of coatings and small samples.In this article, using white irons as sample materials, we explore a possible approach of using electron work function(EWF) as an indicator in evaluating fracture toughness of hard metallic materials. This parameter is promising for being utilized to analyze toughness of protective coatings and small objects as well as bulk materials. Through comparison with results obtained from impact tests and elastic modulus measurement, effectiveness of this EWF approach is demonstrated.
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