特高压输电线路连接金具磨损对腐蚀的影响分析

张培军; 李新梅; 杨现臣; 王晓辉; 王松臣

doi:10.13568/j.cnki.651094.651316.2022.05.05.0002

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特高压输电线路连接金具磨损对腐蚀的影响分析

更新时间：2026-01-21

- 特高压输电线路连接金具磨损对腐蚀的影响分析
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 40, Issue 2, Pages: 250-256(2023)
- 作者机构：
  
  新疆大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2022.05.05.0002
  CLC： TM75
- Published：2023
- 稿件说明：
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[1]张培军,李新梅,杨现臣,等.特高压输电线路连接金具磨损对腐蚀的影响分析[J].新疆大学学报(自然科学版)(中英文),2023,40(02):250-256.
[1]张培军,李新梅,杨现臣,等.特高压输电线路连接金具磨损对腐蚀的影响分析[J].新疆大学学报(自然科学版)(中英文),2023,40(02):250-256. DOI： 10.13568/j.cnki.651094.651316.2022.05.05.0002.

DOI：10.13568/j.cnki.651094.651316.2022.05.05.0002.

摘要

为了揭示腐蚀与磨损环境中连接金具磨损对腐蚀行为的影响，采用金具磨损试验机、KY-YW40盐雾试验机模拟磨损与腐蚀环境，借助电子天平、扫描电镜(SEM)、金相显微镜(OM)、透射电镜(TEM)等表征磨损与腐蚀特性，研究失效机理．结果表明：预磨损试样初始腐蚀量9.09μg/cm2比未磨损试样初始腐蚀量7.29μg/cm2约高19%，预磨损试样初始腐蚀速率0.069μg/(cm2·h)比未磨损试样腐蚀速率0.041μg/(cm2·h)约高40%；预磨损试样腐蚀形貌由团簇状转为片状，其主要腐蚀产物为γ-FeOOH和α-FeOOH．磨损使表面出现剥落坑、裂纹、表层塑性变形、位错聚集等，加速了水分子吸附和腐蚀产物生成，从而加剧腐蚀损伤．

Abstract

In order to reveal the influence of wear on corrosion behavior of connecting fittings in corrosion and wear environment. The wear and corrosion environment were simulated by using the metalware wear tester and KY-YW40 salt spray tester. The corrosion and wear were characterized by electronic balance

scanning electron microscope(SEM)

metallographic microscope(OM) and transmission electron microscope(TEM)

respectively

and the failure mechanism was studied. The results show that the initial corrosion of the pre-worn sample is 9.09μg/cm2

which is 19% higher than that of the unworn sample

7.29 μg/cm2. And the initial corrosion rate of the pre-worn sample is 0.069 μg/(cm2·h)

which is 40% higher than that of the unworn sample

0.041 μg/(cm2·h).The corrosion morphology of pre-worn specimens changed from cluster to flake

and the main corrosion products of the pre-worn samples are γ-FeOOH and α-FeOOH. The surface erosion causes spalling pits

cracks

surface plastic deformation and dislocation aggregation

which accelerates the adsorption of water molecules and the formation of corrosion products

thus aggravating the corrosion damage.

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references

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