碳化硅/碳化钨硬面密封摩擦副的摩擦磨损性能和机理研究

doi:10.15541/jim20180435

摘要/Abstract

摘要：

实验研究了干摩擦和水润滑条件下, 常压固相烧结碳化硅陶瓷(SSiC)及常压液相烧结碳化硅陶瓷(LPSiC)分别与碳化钨(WC)组成的硬面配对摩擦副的滑动摩擦磨损性能。在干摩擦条件下, 与LPSiC/WC摩擦副相比, SSiC陶瓷由于具有更大的晶粒尺寸和硬度, 导致SSiC/WC摩擦副具有更大的摩擦系数和更小的磨损量。磨损区域的SEM形貌结合面扫描分析、微区XRD分析结果表明: 微犁沟和微断裂导致SiC陶瓷的磨损, 疲劳损伤导致WC材料的磨损, 而摩擦过程产生的摩擦热导致磨出的WC颗粒氧化成无定型WO₃。在水润滑条件下, 与SSiC/WC摩擦副相比, LPSiC/WC摩擦副具有更大的摩擦系数和更低的磨损率。在干摩擦和水润滑条件下, 与SiC陶瓷作为动摩擦副配对相比, SiC陶瓷作为固定摩擦副的摩擦配对具有更小的摩擦系数和质量损失。

关键词: 硬面密封, 滑动摩擦, 摩擦副, 表面形貌, 磨损机制

Abstract:

Sliding friction-wear properties of pressurelessly solid-state-sintered silicon carbide ceramics (SSiC) and liquid-phase-sintered SiC ceramics (LPSiC) pairing with tungsten carbide (WC) were researched under the frictions with or without lubrication. Under dry friction, as compared to LPSiC/WC pairs, SSiC/WC pairs have higher friction coefficient (μ) and less mass loss (Δm) due to SSiC ceramics have larger particle size and higher hardness. The surface topography of worn area was detected by SEM companying with elements mapping and micro-area XRD technology. The micro plough cut and micro fracture led to the wear of SiC ceramics. Its fatigue damage led to the wear of WC materials. The grinding-out WC grains were oxidized to amorphous WO₃ phase due to the friction heat generated in the friction. Under the wet friction with water as lubrication, as compared to SSiC/WC pairs, LPSiC/WC pairs have higher friction coefficient and less mass losses. Whether under dry friction or wet friction, the pairs with SiC ceramics as the fixed materials have lower μ and Δm than those with SiC ceramics as the rotated materials.

Key words: hard facing, sliding wear, friction pairs, surface topography, wear modeling

中图分类号:

TQ174

姚秀敏, 王晓洁, 刘学建, 陈忠明, 黄政仁. 碳化硅/碳化钨硬面密封摩擦副的摩擦磨损性能和机理研究[J]. 无机材料学报, 2019, 34(6): 673-678.

Xiu-Min YAO, Xiao-Jie WANG, Xue-Jian LIU, Zhong-Ming CHEN, Zheng-Ren HUANG. Friction-wear Properties and Mechanism of Hard Facing Pairs of SiC and WC[J]. Journal of Inorganic Materials, 2019, 34(6): 673-678.

图/表 8

参考文献 19

[1]	BORRERO-LÓPEZ O, ORTIZ AL, GUIBERTEAU F , et al. Effect of microstructure on sliding-wear properties of liquid-phase-sintered α-SiC.[J]. Am. Ceram. Soc., 2005,88(8):2159-2163. DOI URL
[2]	BORRERO-LÓPEZ O, ORTIZ AL, GUIBERTEAU F , et al. Sliding- wear resistant liquid-phase sintered SiC processed using α-SiC starting powders.[J]. Am. Ceram. Soc., 2007,90(2):541-545. DOI URL
[3]	BORRERO-LÓPEZ O, ORTIZ AL, GUIBERTEAU F , et al. Microstructural design of sliding-wear-resistant liquid-phase-sintered SiC: an overview.[J]. Eur. Ceram. Soc., 2007,27(11):3351-3357. DOI URL
[4]	BORRERO-LÓPEZ O, ORTIZ AL, GUIBERTEAU F , et al. Effect of the nature of the intergranular phase on sliding-wear resistance of liquid-phase-sintered α -SiC. Scr. Mater., 2007,57(6):505-508. DOI URL
[5]	ALLIEGRO R, COFFIN L, TINKLEPAUGH J . Pressure-sintered silicon carbide.[J]. Am. Ceram. Soc., 1956,39(11):386-389. DOI URL
[6]	OMORI M, TAKEI H . Pressureless sintering of SiC.[J]. Am. Ceram. Soc., 1982,65(6):c92-c92. DOI URL
[7]	SANG K Z, JIN Z H . Unlubricated friction of reaction-sintered silicon carbide and its composite with nickel. Wear, 2000,246(1/2):34-39. DOI URL
[8]	SASAKI S . The effect of the surrounding atmosphere on the friction and wear of alumina, zirconia, silicon carbide and silicon nitride. Wear, 1989,134(1):185-200. DOI URL
[9]	BORRERO-LÓPEZA O, ORTIZA AL, GUIBERTEAUA F , et al. Effect of liquid-phase content on the contact-mechanical properties of liquid-phase-sintered α-SiC.[J]. Eur. Ceram. Soc., 2007,27(6):2521-2527. DOI URL
[10]	BORRERO-LÓPEZA O, ORTIZA AL, GUIBERTEAUA F . Improved sliding-wear resistance in situ-toughened silicon carbide.[J]. Am. Ceram. Soc., 2005,88(12):3531-3534. DOI URL
[11]	CIUDAD E , BORRERO-LÓPEZ O, RODRÍGUEZ-ROJAS F, et al. Effect of intergranular phase chemistry on the sliding-wear resistance of pressureless liquid-phase-sintered α-SiC.[J]. Euro. Ceram. Soc., 2012,32(2):511-516. DOI URL
[12]	CHO S J, UM C D, KIM S S . Wear and wear transition in silicon carbide ceramics during sliding.[J]. Am. Ceram. Soc., 1996,79(5):1247-1251. DOI URL
[13]	LLORENTE J, ROMAN-MANSO B, MIRANZO P , et al. Tribological performance under dry sliding conditions of graphene/silicon carbide composites.[J]. Euro. Ceram. Soc., 2016,36(3):429-435. DOI URL
[14]	LAFON-PLACETTE S, DELBE K, DENAPE J , et al. Tribological characterization of silicon carbide and carbon materials.[J]. Euro. Ceram. Soc., 2015,35(4):1147-1159. DOI URL
[15]	NIIHARA K, MORENA R, HASSELMAN D . Evaluation of K_IC of brittle solids by the indentation method with low crack-to-indent ratios.[J]. Mater. Sci. Lett., 1982,1(1):13-16. DOI URL
[16]	CHO S J, HOCKEY B J, LAWN B R , et al. Grain-size and R-curve effects in the abrasive wear of alumina.[J]. Am. Ceram. Soc., 1989,72(7):1249-1252. DOI URL
[17]	CHO S J, UM C D, KIM S S . Wear and wear transition mechanism in silicon carbide during sliding.[J]. Am. Ceram. Soc., 1995,78(4):1076-1078. DOI URL
[18]	DEWITH G, PARREN J . Translucent Y₃Al₅O₁₂ ceramics-mechanical- properties. Solid State Ionics, 1985,16(1-4):87-93. DOI URL
[19]	SANG K Z, LIU L, JIN Z H . Improvements on dry friction and wear properties for reaction-sintered silicon carbide by the matching size of SiC particles. Mater and Design, 2007,28(2):735-738. DOI URL

	Composite/wt%	Grain size/μm	Relative density/%	Fracture toughness/(MPa·m^1/2)	HV_3.0/GPa	HRA
SSiC	96.4SiC-3.0C-0.6B₄C	3-5	>99	(2.96±0.20)	(20.78±0.96)	(93.4±0.1)
LPSiC	93SiC-7YAG	<2	>99	(3.66±0.23)	(19.72±0.52)	(92.7±0.3)
WC	89.9~91.2WC-8~9Ni- 0.8~1.2(Cr+Mo)	<3	>99	(6.65±0.29)	(14.86±0.46)	(90.4±0.1)

	Composite/wt%	Grain size/μm	Relative density/%	Fracture toughness/(MPa·m^1/2)	HV_3.0/GPa	HRA
SSiC	96.4SiC-3.0C-0.6B₄C	3-5	>99	(2.96±0.20)	(20.78±0.96)	(93.4±0.1)
LPSiC	93SiC-7YAG	<2	>99	(3.66±0.23)	(19.72±0.52)	(92.7±0.3)
WC	89.9~91.2WC-8~9Ni- 0.8~1.2(Cr+Mo)	<3	>99	(6.65±0.29)	(14.86±0.46)	(90.4±0.1)

Materials of ring/block	Friction coefficient	(Δm/m) of block/%	(Δm/m) of ring/%
ΦSSiC/WC	(0.70±0.02)	(-0.0029±0.0001)	0
ΦWC/SSiC	(0.66±0.09)	(-0.0009±0.0004)	(-0.0036±0.0023)
ΦLPSiC/WC	(0.63±0.01)	(-0.0041±0.0005)	(-0.0038±0.0009)
ΦWC/LPSiC	(0.57±0.01)	(-0.0034±0.0008)	(-0.0105±0.0019)

Materials of ring/block	Friction coefficient	(Δm/m) of block/%	(Δm/m) of ring/%
ΦSSiC/WC	(0.70±0.02)	(-0.0029±0.0001)	0
ΦWC/SSiC	(0.66±0.09)	(-0.0009±0.0004)	(-0.0036±0.0023)
ΦLPSiC/WC	(0.63±0.01)	(-0.0041±0.0005)	(-0.0038±0.0009)
ΦWC/LPSiC	(0.57±0.01)	(-0.0034±0.0008)	(-0.0105±0.0019)

Materials of ring/block	Friction coefficient	(Δm/m) of block/%	(Δm/m) of ring/%
ΦSSiC/WC	(0.031±0.001)	(-0.0004±0.0001)	(-0.0010±0.0001)
ΦWC/SSiC	(0.018±0.004)	(-0.0004±0.0001)	(+0.0004±0.0004)
ΦLPSiC/WC	(0.093±0.004)	(-0.0002±0.0001)	(-0.0008±0.0001)
ΦWC/LPSiC	(0.020±0.007)	(-0.0004±0.0001)	(-0.0003±0.0006)