Mahade Satyapal, Narayan Karthik, Govindarajan Sivakumar, Björklund Stefan, Curry Nicholas, Joshi Shrikant
Department of Engineering Science, University West, 46132 Trollhättan, Sweden.
International Advanced Research Center for Powder Metallurgy and New Materials, Hyderabad 500069, India.
Materials (Basel). 2019 Jul 24;12(15):2344. doi: 10.3390/ma12152344.
Titanium- and chromium-based carbides are attractive coating materials to impart wear resistance. Suspension plasma spraying (SPS) is a relatively new thermal spray process which has shown a facile ability to use sub-micron and nano-sized feedstock to deposit high-performance coatings. The specific novelty of this work lies in the processing of fine-sized titanium and chromium carbides (TiC and CrC) in the form of aqueous suspensions to fabricate wear-resistant coatings by SPS. The resulting coatings were characterized by surface morphology, microstructure, phase constitution, and micro-hardness. The abrasive, erosive, and sliding wear performance of the SPS-processed TiC and CrC coatings was also evaluated. The results amply demonstrate that SPS is a promising route to manufacture superior wear-resistant carbide-based coatings with minimal in situ oxidation during their processing.
钛基和铬基碳化物是具有吸引力的耐磨涂层材料。悬浮等离子喷涂（SPS）是一种相对较新的热喷涂工艺，它已显示出能够轻松使用亚微米和纳米级原料来沉积高性能涂层。这项工作的具体新颖之处在于以水悬浮液的形式处理细粒度的碳化钛和碳化铬（TiC和CrC），通过悬浮等离子喷涂制备耐磨涂层。通过表面形貌、微观结构、相组成和显微硬度对所得涂层进行了表征。还评估了悬浮等离子喷涂处理的TiC和CrC涂层的磨料磨损、冲蚀磨损和滑动磨损性能。结果充分表明，悬浮等离子喷涂是一种很有前景的方法，可用于制造性能优异的碳化物基耐磨涂层，且在加工过程中原位氧化最少。
