詹斌,刘宁,李彬彬,刘爱军,唐慧兰

• 1:合肥工业大学材料科学与工程学院

摘要(Abstract)：

采用粉末冶金法制备了纳米改性Ti(C,N)基金属陶瓷,并用固体粉末法对其进行了渗硼处理。研究了渗硼处理对Ti(C,N)基金属陶瓷微观组织以及抗弯强度和硬度的影响。结果表明:渗硼处理使Ti(C,N)基金属陶瓷中生成了CoB、TiB2、MoB2和石墨相。金属陶瓷的渗硼层由硼化物层、扩散层和基体区组成,厚度为100～140μm。硼化物层主要由CoB组成,扩散层含有较多孔隙,基体区存在富硼的渗硼影响区,影响区具有与Ti(C,N)基金属陶瓷近似的微观组织,但金属相含量较少。渗硼处理使Ti(C,N)基金属陶瓷的抗弯强度降低,主要是由材料中产生的热应力、组织应力以及组织变化引起的。Ti(C,N)基金属陶瓷的表面硬度提高48.7%。在由渗硼层表面向内部100～140μm范围内,硬度呈下降趋势。

关键词(KeyWords)： Ti(C,N)基金属陶瓷;渗硼;组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 安徽省自然科学基金项目(090414185)

作者(Author): 詹斌,刘宁,李彬彬,刘爱军,唐慧兰

DOI: 10.13289/j.issn.1009-6264.2012.08.028

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