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Author:

林英华 (林英华.) | 雷永平 (雷永平.) (Scholars:雷永平) | 符寒光 (符寒光.) (Scholars:符寒光) | 林健 (林健.)

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CQVIP PKU CSCD

Abstract:

以TiB2粉末和Ni+TiB2粉末混合物分别作为预置层,采用激光原位技术在钛合金表面制备出2类复合涂层.运用XRD,SEM,EPMA与硬度计等实验手段,对合成的复合涂层进行测试分析.结果表明,Ni添加之前,可获得TiB2颗粒与TiB短纤维增强钛基复合涂层,但涂层表面成型质量较差.Ni添加之后,既可改善涂层的表面成型质量,又可生成bcc结构的NiTi合金填充在TiB2颗粒与TiB短纤维周围.Ni的添加还可使TiB2颗粒得以细化,且涂层中出现了b-Ti基.Ni的添加使涂层的显微硬度值降低,但涂层的断裂韧性得以提高.钛基复合涂层主要通过颗粒脱粘与短纤维断裂偏移方式使裂纹发生偏转来提高涂层的断裂韧性.

Keyword:

激光熔覆 TC4钛合金 TiB TiB2 激光技术

Author Community:

  • [ 1 ] 北京工业大学材料科学与工程学院

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Source :

金属学报

Year: 2014

Issue: 12

Volume: 50

Page: 1520-1528

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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