Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution
In this paper, the corrosion mechanism and tensile properties of basalt fibers in sodium hydroxide (NaOH) solution with various concentrations and temperatures were studied. The hydroxyl ions disrupt the –Si–O–Si– and –Si–O–Al&...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-08-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1944/11/8/1381 |
| _version_ | 1811203193331253248 |
|---|---|
| author | Chunhong Tang Hao Jiang Xu Zhang Guangyao Li Junjia Cui |
| author_facet | Chunhong Tang Hao Jiang Xu Zhang Guangyao Li Junjia Cui |
| author_sort | Chunhong Tang |
| collection | DOAJ |
| description | In this paper, the corrosion mechanism and tensile properties of basalt fibers in sodium hydroxide (NaOH) solution with various concentrations and temperatures were studied. The hydroxyl ions disrupt the –Si–O–Si– and –Si–O–Al– bonds leading to the formation of insoluble hydroxides. With the continuation of the hydration reaction, a hydration layer (corrosion shell) with high content of calcium, iron, manganese and titanium ions was formed on the fiber surface. The corrosion shell enabled an increase in the strength and elongation at break of basalt fibers, significantly. Results showed that the tensile strength of fibers was strongly dependent on temperature and concentration. After the basalt fibers were immersed in 1 mol/L NaOH solution at 50 °C for 1 h, 3 h, 6 h, 1 day and 3 days, their retention ratios of strength were 67.6%, 57.8%, 52.5%, 49.0%, 58.2%, respectively. Higher temperature accelerated the corrosion rate of basalt fibers, shortened the formation time of the corrosion shell and increased mass loss. From 25 to 70 °C, the mass loss of fibers increased from 2.4% to 33.8% for fibers immersed in 1 mol/L NaOH for 3 days. The experimental results from quantitative x-ray fluorescence (XRF) showed that the mass loss of basalt fibers was mainly due to the leaching of silicon, aluminum and potassium ions. |
| first_indexed | 2024-04-12T02:51:37Z |
| format | Article |
| id | doaj.art-2ebde69a43f343879f62aa08c13ad696 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T02:51:37Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2ebde69a43f343879f62aa08c13ad6962022-12-22T03:50:59ZengMDPI AGMaterials1996-19442018-08-01118138110.3390/ma11081381ma11081381Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide SolutionChunhong Tang0Hao Jiang1Xu Zhang2Guangyao Li3Junjia Cui4State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, ChinaCollege of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410004, ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, ChinaIn this paper, the corrosion mechanism and tensile properties of basalt fibers in sodium hydroxide (NaOH) solution with various concentrations and temperatures were studied. The hydroxyl ions disrupt the –Si–O–Si– and –Si–O–Al– bonds leading to the formation of insoluble hydroxides. With the continuation of the hydration reaction, a hydration layer (corrosion shell) with high content of calcium, iron, manganese and titanium ions was formed on the fiber surface. The corrosion shell enabled an increase in the strength and elongation at break of basalt fibers, significantly. Results showed that the tensile strength of fibers was strongly dependent on temperature and concentration. After the basalt fibers were immersed in 1 mol/L NaOH solution at 50 °C for 1 h, 3 h, 6 h, 1 day and 3 days, their retention ratios of strength were 67.6%, 57.8%, 52.5%, 49.0%, 58.2%, respectively. Higher temperature accelerated the corrosion rate of basalt fibers, shortened the formation time of the corrosion shell and increased mass loss. From 25 to 70 °C, the mass loss of fibers increased from 2.4% to 33.8% for fibers immersed in 1 mol/L NaOH for 3 days. The experimental results from quantitative x-ray fluorescence (XRF) showed that the mass loss of basalt fibers was mainly due to the leaching of silicon, aluminum and potassium ions.http://www.mdpi.com/1996-1944/11/8/1381basalt fiberalkaline corrosioncorrosion behaviormechanical property |
| spellingShingle | Chunhong Tang Hao Jiang Xu Zhang Guangyao Li Junjia Cui Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution Materials basalt fiber alkaline corrosion corrosion behavior mechanical property |
| title | Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution |
| title_full | Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution |
| title_fullStr | Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution |
| title_full_unstemmed | Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution |
| title_short | Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution |
| title_sort | corrosion behavior and mechanism of basalt fibers in sodium hydroxide solution |
| topic | basalt fiber alkaline corrosion corrosion behavior mechanical property |
| url | http://www.mdpi.com/1996-1944/11/8/1381 |
| work_keys_str_mv | AT chunhongtang corrosionbehaviorandmechanismofbasaltfibersinsodiumhydroxidesolution AT haojiang corrosionbehaviorandmechanismofbasaltfibersinsodiumhydroxidesolution AT xuzhang corrosionbehaviorandmechanismofbasaltfibersinsodiumhydroxidesolution AT guangyaoli corrosionbehaviorandmechanismofbasaltfibersinsodiumhydroxidesolution AT junjiacui corrosionbehaviorandmechanismofbasaltfibersinsodiumhydroxidesolution |