Page 56 - 《摩擦学学报》2020年第3期

第 40 卷 第 3 期 摩 擦 学 学 报 Vol 40 No 3
2020 年 5 月 Tribology May, 2020

DOI: 10.16078/j.tribology.2019197

核废料硼硅酸盐玻璃在酸性溶液环境下的

摩擦磨损性能

*
乔 乾, 何洪途 , 余家欣
(西南科技大学 制造过程测试技术教育部重点实验室，四川 绵阳 621010)

摘 要: 通过环境可控的直线往复式摩擦磨损试验机，以不锈钢球为对摩副，探究核废料硼硅酸盐玻璃在不同pH酸
性溶液环境中的磨损行为和磨损机理. 研究发现，随着外界溶液pH逐渐从1增大到7，摩擦过程中的摩擦系数缓慢增
加，但硼硅酸盐玻璃和不锈钢球的磨损量呈现先增大后减小的变化规律. 硼硅酸盐玻璃在不同pH下的材料去除与
其界面的电荷特性和接触情况密切相关. 当溶液pH <2.5时，硼硅酸盐玻璃基底和不锈钢球表面带正电荷，界面的排
斥作用降低了界面的直接接触和剪切应力，从而降低了玻璃材料的磨损量；当pH为2.5时，硼硅酸盐玻璃表面几乎
不带电荷，使得硼硅酸盐玻璃和不锈钢球在磨损过程中进行直接的接触，导致其磨损量最大；当pH>2.5时，硼硅酸
盐玻璃表面与不锈钢球表面分别带负电荷和正电荷，界面间呈现吸引力作用，界面间的水化层对磨损界面起到润
滑作用，从而降低硼硅酸盐玻璃和不锈钢球的磨损量.
关键词: 硼硅酸盐玻璃; 磨损; pH; 静电作用
中图分类号: TH117.3 文献标志码: A 文章编号: 1004-0595(2020)03–0322–08

Effect of Acid Solutions on Friction and Wear Behaviors of

Nuclear Borosilicate Glass

*
QIAO Qian, HE Hongtu , YU Jiaxin

(Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest
University of Science and Technology, Sichuan Mianyang 621010, China)
Abstract: Using an environment-controlled linear reciprocating tribometer, the effect of acid solutions on wear
behaviors of nuclear borosilicate glass were studied by rubbing against a stainless stain ball under different pH solutions.
Experimental results indicated that the steady-state friction coefficient increased slowly, and the wear damage of the
borosilicate glass increased firstly and then decreased when the solution pH increased gradually from 1 to 7. Further
analysis showed that the wear mechanism of borosilicate glass in acid solutions strongly depended on the electrostatic
effects and contact conditions of the sliding interface. When the pH was less than 2.5, both the borosilicate glass
substrate and stainless steel ball were positively charged, the interface repulsive force reduced the direct contact and
shear stress of the interface, resulting in the decrease of wear volume of glass materials. When the pH of the solution was
2.5, the borosilicate glass was almost zero-charged, the direct contact between borosilicate glass and stainless steel ball
led to the substantial material loss. In contrast, when the pH was higher than 2.5, the borosilicate glass substrate and
stainless steel ball were negatively charged and positively charged, respectively. The interface presented the attractive
effect, and the hydration layer between the interfaces lubricated the sliding interface, resulting in lower wear volume of
both borosilicate glass and stainless steel ball.
Key words: borosilicate glass; wear; pH; electrostatic effects

Received 22 October 2019, revised 4 December 2019, accepted 27 December 2019, available online 28 May 2020.
*Corresponding author. E-mail: hehongtu@swust.edu.cn, Tel: +86-816-6089685.
The project was supported by the National Natural Science Foundation of China (51605401, 51575462) and the Scientific Research
Fund of Sichuan Provincial Education Department, China (17ZA0408).
国家自然科学基金项目(51605401，51575462)和四川省教育厅科研重点项目(17ZA0408)资助.