QQ客服 官方微博 反馈留言

	反应等离子熔覆原位合成TiN复合涂层微观组织及显微硬度研究
	崔华威 ; 崔秀芳 ; 王海斗 ; 邢志国 ; 金国 ; Cui Huawei ; Cui Xiufang ; Wang Haidou ; Xing Zhiguo ; Jin Guo
	2016-03-30 ; 2016-03-30
关键词	TiN涂层 反应等离子熔覆 原位合成 Zirconium diboride carbon nanotubes mechanical properties microstructure TG174.4
其他题名	Microstructure and Micro-Hardness of In-Situ Synthesizing TiN Composite Coating by Reactive Plasma Cladding
中文摘要	Ti N相具有高的硬度和强度,在涂层中被作为强化相来增强涂层的硬度,被广泛应用于提高涂层的耐磨性。采用反应等离子熔覆技术,以纯Ti粉末为原料,采用合适的等离子熔覆参数,在不锈钢基体表面原位合成制备了Ti N复合涂层。采用扫描电镜(SEM),能谱仪(EDS),X射线衍射(XRD)测试手段,分析了涂层内显微组织;利用显微硬度计测量了涂层的显微硬度,通过压痕计算了涂层的断裂韧性。结果表明:涂层微观组织为胞状树枝晶Ti N相弥散分布于Ti相与α-Fe相构成的共晶上。复合涂层具有较高的硬度,达到HV0.3996,涂层在不同加载下的压痕尺寸效应较明显,平均显微硬度从0.98 N时HV1021降到4.90 N时HV832,涂层显微硬度压痕在4.90 N加载时出现裂纹,复合涂层具有较好的韧性,4.90 N加载下平均断裂韧性为5.15 MPa·m。; TiN phase usually as a strengthening phase in coatings have been widely used for wear-resistant coatings due to high hardness and superior wear-resistant. Ti powders were used as precursor materials for in-situ synthesizing TiN composite coatings deposited on stainless steel substrates by plasma cladding technique. The microstructure was characterized through scanning electron microscopy( SEM),energy dispersive spectroscopy( EDS),and X-ray diffraction( XRD). The micro-hardness and fracture toughness of the composite coating were measured by microhardness tester. The results showed that the microstructure was composed of primary phase TiN cellular tree-like crystal structure and eutectic structure containing Ti phase and α-Fe phase. TiN disperse phase within the coating enhanced the micro-hardness,and HV0. 3996 was achieved. The coating had indentation effect,the hardness from HV1021 under 0. 98 N decreased to HV832 under 4. 90 N. The micro-hardness indentation appeared cracks at a load of 4. 90 N,and the composite coating had a superior fracture toughness of 5. 15 MPa·m.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144680]
专题	清华大学
推荐引用方式 GB/T 7714	崔华威,崔秀芳,王海斗,等. 反应等离子熔覆原位合成TiN复合涂层微观组织及显微硬度研究[J],2016, 2016.
APA	崔华威.,崔秀芳.,王海斗.,邢志国.,金国.,...&Jin Guo.(2016).反应等离子熔覆原位合成TiN复合涂层微观组织及显微硬度研究..
MLA	崔华威,et al."反应等离子熔覆原位合成TiN复合涂层微观组织及显微硬度研究".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。