Effect of annealing atmosphere on scale formation and pickling performance of 410 SS

S. Y. Cheng; C. T. Juan; S. L. Kuan; W. T. Tsai

doi:10.1023/a:1027316918546

Effect of annealing atmosphere on scale formation and pickling performance of 410 SS

S. Y. Cheng, C. T. Juan, S. L. Kuan, W. T. Tsai

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The compositions and microstructures of scales formed on the surface of 410 stainless steel after annealing at 850°C in dry air, moist air, N₂ and 10% H₂ + N₂ atmospheres were investigated. The pickling performances in 25 wt.% H₂SO₄ solution of hot-rolled and annealed 410 SS were also evaluated. The experimental results indicate that the scale formed in the moist air was the most difficult to remove, while descaling was easy when the stainless steel was annealed in a reducing atmosphere (10% H₂ + N₂). The composition and microstructure of the oxides formed during annealing strongly affected the descaling performance. Both the stability of the scale in pickling solution and the effectiveness of descaling could be evaluated and predicted by measuring the change of electrochemical potential during acid pickling. The reactivation time determined from the potential-decay curve was found strongly dependent on the atmosphere in which 410 SS was annealed.

Original language	English
Pages (from-to)	409-425
Number of pages	17
Journal	Oxidation of Metals
Volume	60
Issue number	5-6
DOIs	https://doi.org/10.1023/a:1027316918546
Publication status	Published - 2003 Dec

All Science Journal Classification (ASJC) codes

Metals and Alloys
Inorganic Chemistry
Materials Chemistry

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title = "Effect of annealing atmosphere on scale formation and pickling performance of 410 SS",

abstract = "The compositions and microstructures of scales formed on the surface of 410 stainless steel after annealing at 850°C in dry air, moist air, N2 and 10% H2 + N2 atmospheres were investigated. The pickling performances in 25 wt.% H2SO4 solution of hot-rolled and annealed 410 SS were also evaluated. The experimental results indicate that the scale formed in the moist air was the most difficult to remove, while descaling was easy when the stainless steel was annealed in a reducing atmosphere (10% H2 + N2). The composition and microstructure of the oxides formed during annealing strongly affected the descaling performance. Both the stability of the scale in pickling solution and the effectiveness of descaling could be evaluated and predicted by measuring the change of electrochemical potential during acid pickling. The reactivation time determined from the potential-decay curve was found strongly dependent on the atmosphere in which 410 SS was annealed.",

author = "Cheng, {S. Y.} and Juan, {C. T.} and Kuan, {S. L.} and Tsai, {W. T.}",

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issn = "0030-770X",

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TY - JOUR

T1 - Effect of annealing atmosphere on scale formation and pickling performance of 410 SS

AU - Cheng, S. Y.

AU - Juan, C. T.

AU - Kuan, S. L.

AU - Tsai, W. T.

PY - 2003/12

Y1 - 2003/12

N2 - The compositions and microstructures of scales formed on the surface of 410 stainless steel after annealing at 850°C in dry air, moist air, N2 and 10% H2 + N2 atmospheres were investigated. The pickling performances in 25 wt.% H2SO4 solution of hot-rolled and annealed 410 SS were also evaluated. The experimental results indicate that the scale formed in the moist air was the most difficult to remove, while descaling was easy when the stainless steel was annealed in a reducing atmosphere (10% H2 + N2). The composition and microstructure of the oxides formed during annealing strongly affected the descaling performance. Both the stability of the scale in pickling solution and the effectiveness of descaling could be evaluated and predicted by measuring the change of electrochemical potential during acid pickling. The reactivation time determined from the potential-decay curve was found strongly dependent on the atmosphere in which 410 SS was annealed.

AB - The compositions and microstructures of scales formed on the surface of 410 stainless steel after annealing at 850°C in dry air, moist air, N2 and 10% H2 + N2 atmospheres were investigated. The pickling performances in 25 wt.% H2SO4 solution of hot-rolled and annealed 410 SS were also evaluated. The experimental results indicate that the scale formed in the moist air was the most difficult to remove, while descaling was easy when the stainless steel was annealed in a reducing atmosphere (10% H2 + N2). The composition and microstructure of the oxides formed during annealing strongly affected the descaling performance. Both the stability of the scale in pickling solution and the effectiveness of descaling could be evaluated and predicted by measuring the change of electrochemical potential during acid pickling. The reactivation time determined from the potential-decay curve was found strongly dependent on the atmosphere in which 410 SS was annealed.

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JO - Oxidation of Metals

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Effect of annealing atmosphere on scale formation and pickling performance of 410 SS

Abstract

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