摘要
以TiO、TiC和TiN的商业粉末为原料,采用放电等离子烧结技术(SPS)在1 600℃制备致密的钛固溶体Ti3OCN,系统研究了不同烧结方式下(包括SPS、传统烧结(CS)和它们的组合)烧结Ti3OCN的致密化过程和性能变化。结果表明,制备的Ti3OCN具有面心立方结构,其形成机理是O、N元素进入TiC。在SPS之后进行的CS过程可以小范围地增加钛固溶体的密度和电导率,但会降低其机械性能。
Dense bulk of titanium oxycarbonitride （Ti3OCN） was successfully synthesized by Spark Plasma Sintering （SPS） at 1 600 ℃ with commercial powder TiO,TiC and TiN as precursors.The effects of different sintering routes,including SPS,conventional sintering （CS）,combination of SPS and CS,on densification,morphologies,electrical conductivity and mechanical properties were systematically investigated.The results show that formation mechanism of TiOCN with face-centred-cubic structure is diffusion of oxygen and nitrogen into crystal lattices of TiC during SPS process.Aid of CS limitedly improves density and conductivity of TiOCN at expense of a slight decreases of its mechanical properties.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2014年第6期58-62,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金重点项目(50934001)
