Microstructure and Sliding Wear Performance of Plasma-Sprayed TiB2-Ni Coating Deposited from Agglomerated and Sintered Powder
Microstructure and Sliding Wear Performance of Plasma-Sprayed TiB2-Ni Coating Deposited from Agglomerated and Sintered Powder
复制标题
团聚烧结粉末等离子喷涂TiB2-Ni涂层的显微组织和滑动磨损性能
DOI：
10.1007/s11666-013-0015-8
复制
发表时间：
2013-11
影响因子：
3.1
通讯作者：
Li, Zhuo-Xin
中科院分区：
文献类型：
--
作者：
Zhu, Hong-Bin;Li, Hui;Yang, Hai-Xin;Li, Zhuo-Xin
本工作旨在开发一种沉积TiB_2-Ni金属陶瓷涂层的方法。首先通过团聚和烧结制备原料，随后对其进行等离子喷涂。采用扫描电镜和X射线衍射仪对粉末和喷涂层的显微组织和相组成进行了分析。测试了涂层的显微硬度（Hv）和断裂韧性（KIC）。还使用GCr 15钢作为配对物通过SRV®摩擦测试仪对喷涂涂层进行滑动磨损测试。结果表明，喷涂TiB 2-Ni涂层的相组成为TiB 2、Ni和Ni 20 Ti 3B 6，其含量随粉末煅烧温度和粉末中TiB 2含量的变化而变化。涂层的硬度和断裂韧性也随粉末的不同而变化。Ni 20 Ti 3B 6脆性相是影响涂层断裂韧性的主要因素，同时也对涂层的滑动磨损性能产生不利影响。经1250 °C煅烧的60 TiB 2 - 40 Ni涂层组织致密，TiB 2含量高，Ni 20 Ti 3B 6相残留少，具有较好的滑动磨损性能。
This work is aimed at developing a route for the deposition of TiB2-Ni cermet coating. The feedstock was firstly prepared by agglomeration and sintering, which was subsequently subjected to plasma spraying. The microstructures and the phase composition of the powder, as well as the sprayed coating were analyzed by scanning electron microscopy and x-ray diffraction. The microhardness (Hv) and the fracture toughness (KIC) of the coating were evaluated. A sliding wear test was also performed on the sprayed coating by SRV®tribo-tester using GCr15 steel as a counterpart. The results showed that the phase of sprayed TiB2-Ni coatings consisted of TiB2, Ni, and Ni20Ti3B6, whose amount varied depending on the powder calcination temperature and the TiB2content in the powder. Both the hardness and the fracture toughness of the coating were also changed with different powders. The Ni20Ti3B6brittle phase was the main factor affecting the fracture toughness of coating, which also had detrimental effect on the sliding wear performance. The 60TiB2-40Ni coating deposited from the powder calcined at 1250 °C had better sliding wear performance as it presented more dense structure, higher TiB2content and less retained Ni20Ti3B6phase in the coating.
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DOI：
10.1007/s11661-002-0257-4
发表时间：
2002-12
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
J. Vleugels;K. Hari Kumar;R. Vitchev;O. Biest;B. Basu
通讯作者：
J. Vleugels;K. Hari Kumar;R. Vitchev;O. Biest;B. Basu
影响因子：
3.1
作者：
J. Guilemany;J. Nutting;N. Llorcalsern
通讯作者：
J. Guilemany;J. Nutting;N. Llorcalsern
影响因子：
5
作者：
M. Berger;S. Hogmark
通讯作者：
M. Berger;S. Hogmark
影响因子：
5
作者：
M. Jones;A. Horlock;P. Shipway;D. McCartney;J. Wood
通讯作者：
M. Jones;A. Horlock;P. Shipway;D. McCartney;J. Wood
影响因子：
5
作者：
B. Wang;K. Luer
通讯作者：
B. Wang;K. Luer