反应等离子喷涂抽油机光杆C/TiNC涂层的力学性能

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Abstract In order to solve the problems of corrosion and wear failure of polished rod of oil field pumping unit, nano-TiCN coating was synthesized by mixing cheap graphite or carbon black powder with micro-Ti powder, feeding into high temperature plasma flame containing nitrogen, and self-propagating reaction of Ti with C and N. By adding elements such as Cr and Mo into the coating, a composite coating with micron-nano multi-scale structure is formed, which can reduce the stress of nano-TiCN coating. The results show that the hardness of C/TiCN composite coating is more than 1 500 HV, higher than that of hard Cr coating, the bonding strength of coating is more than 25 MPa, and the thickness of coating is more than 300 μm. The problem of inversion of hardness and toughness of nano-coating was solved, and the chromium plating layer on the surface of polished rod was replaced by a coating with good toughness, wear resistance and abrasion resistance, so as to prolong the service life of polished rod and disk root of oil field pumping unit and reducing the consumption of pumping unit.

Key words： matrix pretreatment C/TiNC coating reactive plasma spraying polished rod corrosion resistance and wear resistance

Received: 10 June 2019 Published: 19 June 2020

ZTFLH:

TG174.44

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	Articles by authors
	HAN Fuyong
	NI Pan
	HU Yangming
	WANG Qin

Cite this article:

HAN Fuyong,NI Pan,HU Yangming, et al. Mechanical properties of C/TiNC coating on pole of reactive plasma spraying pumping unit[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(6): 515-522.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I6/515

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