Surface metallization of solid lubricants and its effect on the mechanical properties of Fe-based bit matrix
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摘要: 自润滑孕镶金刚石钻头可为月球钻探难题提供新的技术方案,但固体润滑剂与钻头胎体之间湿润性较差,会导致胎体物理力学性能下降。研究固体润滑剂MoS2、WS2、CaF2自身材料特性差异及其对表面化学镀覆效果的影响,并探究了固体润滑剂镀覆前后对钻头胎体压入硬度和抗弯强度的影响。结果表明:化学镀可实现对上述3种固体润滑剂的表面镀镍处理,但镀覆效果存在一定差异;在相同体积浓度条件下,MoS2和WS2表面金属化能提升自润滑孕镶金刚石钻头胎体的力学性能,但CaF2的效果不明显。Abstract: Self-lubricating impregnated diamond bit can provide a new technical solution to the lunar drilling problem, but the poor wettability between the solid lubricants and the bit matrix can lead to degradation of physical and mechanical properties of the bit matrix. The influence of properties of the solid lubricant MOS2, WS2 and CAF2 on the electroless plating was studied, and the influence of the solid lubricant coating on the indentation hardness and bending strength of the bit matrix was investigated. The results show that the surface nickel plating of the above three solid lubricants can be achieved by the chemical plating method, but there are some differences in their plating appearances. Under the same volume concentration of condition, MoS2 and WS2 surface metallization can improve the mechanical properties of self-lubricating impregnated diamond bit matrix, but the effect of CaF2 is insignificant.
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Key words:
- diamond bit /
- self-lubrication /
- chemical plating /
- surface metallization /
- lunar drilling
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表 1 化学镀相关溶液
Table 1. Chemical plating related solutions
预处理 化学镀
镀液(用氨水调pH=9)清洗 粗化 敏华、活化 解胶 ωNaOH=
10%ωHNO3=
10%A液:0.3 g PdCl2
10 mL浓盐酸
12 g SnCL2
B液:160 g NaCl
1000 mL 蒸馏水50 mL
稀盐酸500 mL 蒸馏水
12.5 g 硫酸镍
12.5 g 次磷酸钠
25 g 柠檬酸钠
15 g 氯化铵表 2 胎体试样配方
Table 2. Formulation of specimens of matrix
试样 固体润滑剂 试样中固体润滑剂体积分数 φ/% 1# MoS2 4 2# Ni包MoS2 4 3# WS2 4 4# Ni包WS2 4 5# CaF2 4 6# Ni包CaF2 4 -
[1] 李谦, 高辉, 谢兰兰, 等. 月球钻探取样技术研究进展 [J]. 探矿工程(岩土钻掘工程),2021,48(1):15-34.LI Qian, GAO Hui, XIE Lanlan, et al. Review of research about lunar drilling technology [J]. Exploration Engineering(Rock & soil Drilling and Tunneling),2021,48(1):15-34. [2] RAMESH K, YEO S H, GOWRI S. Experimental evaluation of super high-speed grinding of advanced ceramics [J]. International Journal of Advanced Manufacturing Technology,2001(17):87-92. [3] STOTT F H, WOOD G C. The influence of oxides on the friction and wear of alloys [J]. Tribology International,1978,11(4):211-218. doi: 10.1016/0301-679X(78)90178-0 [4] STOTT F H, GLASCOTT J, WOOD G C. Models for the generation of oxides during sliding wear [J]. Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences,1985,402(1822):167-186. [5] 潘秉锁, 方小红, 杨凯华. 自润滑孕镶金刚石钻头胎体材料初步研究 [J]. 探矿工程(岩土钻掘工程),2009(1):76-78.PAN Bingsuo, FANG Xiaohong, YANG Kaihua. Elementary study on self-lubricating matrix material for impregnated diamond bit [J]. Exploration Engineering (Rock & Soil Drilling and Tunneling),2009(1):76-78. [6] 李成龙, 赵江, 段隆臣. CaF2/hBN自润滑Fe基孕镶金刚石钻头性能研究 [J]. 探矿工程(岩土钻掘工程),2018,45(11):78-82.LI Chenglong, ZHAO Jiang, DUAN Longchen. Study on the properties of Fe-based impregnated diamond bits with CaF2/hBN self-lubricating additives [J]. Exploration Engineering (Rock & soil Drilling and Tunneling),2018,45(11):78-82. [7] 张凯叶, 张钧. 化学镀制备镍基镀层研究进展 [J]. 铸造技术,2022,43(1):51-54. doi: 10.16410/j.issn1000-8365.2022.01.010ZHANG Kaiye, ZHANG Jun. Research progress in the preparation of nickel-based coatings by electroless plating [J]. Foundry Technology,2022,43(1):51-54. doi: 10.16410/j.issn1000-8365.2022.01.010 [8] WANG H. Preparation and corrosion resistance of electroless Ni-P/SiC functionally gradient coatings on AZ91D magnesium alloy [J]. Applied Surface Science,2013,286:319-327. doi: 10.1016/j.apsusc.2013.09.079 [9] 谢兰兰, 潘秉锁, 段隆臣. 石墨粒度对自润滑孕镶金刚石钻头性能的影响 [J]. 地质科技情报,2014(3):181-184.XIE Lanlan, PAN Bingsuo, DUAN Longchen. Influence of granularity of graphite on the properties of self-lubricating impregnated diamond bit [J]. Bulletin of Geological Science and Technology,2014(3):181-184. [10] 俸颢, 毛大恒. 一种二硫化钨高温润滑脂的研制与性能研究 [J]. 重庆师范大学学报(自然科学版),2004(3):50-54.FENG Hao, MAO Daheng. Study of the development of a WS2 high-temperature lubricating grease [J]. Journal of Chongqing Normal University (Natural Science),2004(3):50-54. [11] 陈爱智, 张永振, 肖宏滨, 等. 镍基MoS2复合粉末等离子喷涂涂层的干滑动摩擦磨损性能 [J]. 材料开发与应用,2002(1):1-3. doi: 10.3969/j.issn.1003-1545.2002.01.001CHENG Aizhi, ZHANG Yongzhen, XIAO Hongbin, et al. Dry sliding wear and friction behaviors of plasma-sprayed nickel-based MoS2 cermets coating [J]. Development and Application of Materials,2002(1):1-3. doi: 10.3969/j.issn.1003-1545.2002.01.001 [12] SCHARF T W, PRASAD S V. Solid lubricants: a review [J]. Journal of Materials Science,2013,48(2):511-531. doi: 10.1007/s10853-012-7038-2 [13] GAO X, FU Y, JIANG D, et al. Constructing WS2/MoS2 nano-scale multilayer film and understanding its positive response to space environment [J]. Surface and Coatings Technology,2018,353(11):8-17. doi: 10.1016/j.surfcoat.2018.08.072 [14] 侯锁霞, 高辉, 贾晓鸣. WS2基固体润滑涂层摩擦性能研究 [J]. 润滑与密封,2013,38(4):82-86. doi: 10.3969/j.issn.0254-0150.2013.04.018HONG Suoxia, GAO Hui, JIAO Xiaoming. Research on friction property of WS2 matrix solid lubricating coatings [J]. Lubrication Engineering,2013,38(4):82-86. doi: 10.3969/j.issn.0254-0150.2013.04.018 [15] HAROLD E S, THOMAS N S, GORDON P A. Fluoride solid lubricants for extreme temperatures and corrosive environments [J]. ASLE Transactions,2008,8(4):307-322. [16] 李成龙. 固体润滑剂对孕镶金刚石钻头复合材料性能的影响研究 [D]. 武汉: 中国地质大学, 2020.LI Chenglong. Study on the influence of solid lubricants on the properties of impregnated diamond bit composite materials [D]. Wuhan: China University of Geosciences, 2020. [17] SHI H, DUAN L, TAN S, et al. Influence of pre-alloying on Fe-Cu based metal matrix composite [J]. Journal of Alloys and Compounds,2021,858(7):159134. doi: 10.1016/j.jallcom.2021.159134 -