Improving Pressure-Velocity Limit of Mechanical Seal with Polycrystalline Diamond Coating

doi:10.3390/app10176090

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Improving Pressure-Velocity Limit of Mechanical Seal with Polycrystalline Diamond Coating
	Guo, Daidong; Cai, Ningning; Wu, Guoping; Xie, Fangmin; Tan, Shouhong; Jiang, Nan; Li, He
刊名	APPLIED SCIENCES-BASEL
	2020
卷号	10 期号:17
关键词	WEAR-RESISTANT FILMS RAMAN PERFORMANCE DEPOSITION CARBON LINE
DOI	10.3390/app10176090
英文摘要	Polycrystalline diamond (PCD)-coated mechanical seal rings were prepared by hot filament chemical vapor deposition (HFCVD) on graphite-loaded silicon carbide (GSiC) substrates. From the initial deposition process, the diamond first nucleated and then grew into a dense coating with grain size of 4 mu m and thickness of 12.3 mu m. The well-grown PCD coating, as confirmed by Raman spectroscopy and X-ray diffractometry, significantly improves the pressure-velocity limit of the mechanical seal applied in harsh operating conditions, no matter whether for a hard-to-soft mating combination or a hard-to-hard mating combination. Comparing GSiC against sintered silicon carbide (SSiC) combination (GSiC/SSiC), GSiC against graphite combination (GSiC/graphite) and PCD against graphite combination (PCD/graphite), PCD against SSiC combination (PCD/SSiC) shows the highest pressure velocity (PV) limit of 42.31 MPa center dot m/s with 4 kN loading at 4500 rpm rotation speed. An extremely low and stable friction coefficient and super mechanical properties under harsh conditions can be approved as the source of the high PV limit of PCD coating. A mechanical seal with PCD coating can be used for more demanding applications.
学科主题	Chemistry ; Engineering ; Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20530]
专题	2020专题
作者单位	Jiang, N (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine New Mat & Related Technol, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Guo, Daidong,Cai, Ningning,Wu, Guoping,et al. Improving Pressure-Velocity Limit of Mechanical Seal with Polycrystalline Diamond Coating[J]. APPLIED SCIENCES-BASEL,2020,10(17).
APA	Guo, Daidong.,Cai, Ningning.,Wu, Guoping.,Xie, Fangmin.,Tan, Shouhong.,...&Li, He.(2020).Improving Pressure-Velocity Limit of Mechanical Seal with Polycrystalline Diamond Coating.APPLIED SCIENCES-BASEL,10(17).
MLA	Guo, Daidong,et al."Improving Pressure-Velocity Limit of Mechanical Seal with Polycrystalline Diamond Coating".APPLIED SCIENCES-BASEL 10.17(2020).