Fabrication and properties of TiB2-TiC reinforced NiAl coatings by reactive plasma spraying on AZ91D magnesium alloy
Fabrication and properties of TiB2-TiC reinforced NiAl coatings by reactive plasma spraying on AZ91D magnesium alloy
复制标题
AZ91D镁合金反应等离子喷涂TiB2-TiC增强NiAl涂层的制备及性能
DOI：
10.1016/j.surfcoat.2019.125055
复制
发表时间：
2019-11
影响因子：
5.4
通讯作者：
Xueqiang Cao
中科院分区：
文献类型：
--
作者：
Jiagen Shen;Binglin Zou;Xiaolong Cai;Shujuan Dong;Xueqiang Cao
采用反应等离子喷涂（RPS）技术在AZ 91 D镁合金表面制备了TiB 2-TiC陶瓷增强原位NiAl基复合涂层。研究了RPS涂层的结合强度、显微硬度和电化学腐蚀磨损性能。结果表明，涂层主要由TiB 2、TiC和NiAl相组成，涂层组织致密，呈层状结构。由于在镁合金基体上预先制备了一层较薄的Ni-P化学镀层，RPS镀层与镁合金结合紧密，结合强度高达24.2- 34.6MPa。制备的Ni-P/TiB 2-TiC原位增强NiAl基涂层对基体具有良好的防腐蚀和耐磨性能。随着原位NiAl基体中TiB 2-TiC含量的增加，涂层的耐磨性提高，而耐腐蚀性呈下降趋势。
TiB2-TiC ceramic reinforced in situ NiAl matrix composite coatings were fabricated on AZ91D magnesium alloy by reactive plasma spraying (RPS) from the mixtures of Ni-Al and self-propagating high-temperature synthesis product in a 10 wt%Ni-3Ti-B4C system. Microstructure and properties including bonding strength, microhardness and electrochemical corrosion and wear resistances for the RPS coatings were investigated. The results showed that the coatings were mainly composed of the desired phases of TiB2, TiC and NiAl, and exhibited the compacted and layered morphology. The RPS coatings bound tightly to the magnesium alloy due to the prior preparation of a thin electroless plating Ni-P layer on the substrate, with bonding strength as high as 24.2–34.6 MPa. The produced Ni-P/TiB2-TiC reinforced in situ NiAl matrix coatings provided good protection against both wear and corrosion for substrate. Wear resistance of the coatings increased with an increase in the content of TiB2-TiC in the in situ NiAl matrix, while the corrosion resistance displayed a decreasing trend.
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DOI：
10.1007/s11666-011-9616-2
发表时间：
2011-02
期刊：
JTTEE5
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影响因子：
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