Modeling of the Critical Pitting Temperature between the Laboratory-Scale Specimen and the Large-Scale Specimen

Liu, Jing; Zhang, Tao; Li, Huabing; Zhao, Yuhai; Wang, Fuhui; Zhang, Xian; Cheng, Lin; Wu, K.

doi:10.1149/2.0521807jes

Cited by 9 publications

(6 citation statements)

References 42 publications

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“…The parameter limits of chip devices should be considered in the test ambient programs. Testers should beware of chip overload in their operations, while chip heat should always be kept under control in the testing [2] . The basic framework of the HTOL test of automobile chips is presented in Figure 1.…”

Section: Test Programsmentioning

confidence: 99%

Test Method and Application of High-Temperature Operating Life of Automobile Chips

Wen

Zhai²,

Ji³

et al. 2023

J. Phys.: Conf. Ser.

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The high temperature operating life (HTOL) test is an important item in the reliability test of automobile chips. The goal of the HTOL test is to evaluate the durability of automobile chip products under high-temperature loads. Based on the common-used standards, calculation models, and related research experience of evaluating the reliability of electron devices at home and abroad, this paper focuses on the model of the high-temperature durability test model of automobile chips and analyzes different factors affecting the high-temperature operating life test. The general calculation and analysis model and method of the high-temperature operating life test of automobile chips are presented in this paper, which provides a reference for determining the indicators of the high-temperature operating life test of automobile chips.

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Section: Test Programsmentioning

confidence: 99%

Test Method and Application of High-Temperature Operating Life of Automobile Chips

Wen

Zhai²,

Ji³

et al. 2023

J. Phys.: Conf. Ser.

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“…Some current glitches were observed with further increasing the solution temperature, which was related to the formation of metastable pits caused by the film breakdown [27,28]. When the temperature further increased to a value near CPT, the current density raised sharply as a result of the formation of stable pits [29,30]. It could be seen that the least current glitches were presented for the 316L-0.21Sn sample, indicating the most stable passive film and the best pitting resistance associated with this specimen.…”

Section: Cpt Testmentioning

confidence: 99%

Enhancements of Passive Film and Pitting Resistance in Chloride Solution for 316LX Austenitic Stainless Steel After Sn Alloying

Yang

Liu

Cheng

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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In the present work, the electrochemical behavior and properties of the passive film of a new Sn-alloyed 316LX austenitic stainless steel were investigated. With the increase in Sn content in 316LX austenitic stainless steel from 0 to 0.21%, the critical pitting temperature value increased from 32.6 to 38.8°C, and the pitting potential increased from 0.252 V SCE to 0.317 V SCE . Electrochemical impedance spectroscopy results showed that the corrosion resistance of passive film rose with the increase in Sn content, indicating a more stable passive film. The Mott-Schottky measurement revealed an n-type passive film with a decreased carrier concentration on the 316LX austenitic stainless steel surface. The Cr, Sn 2? and Sn 4? (SnO, SnOHCl or SnO 2 ) enrichments were observed in the passive layer by X-ray photoelectron spectroscopy. The enrichment of Sn and Cr in the passive film can account for the enhanced pitting resistance of 316LX austenitic stainless steel in chloride solution.

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“…Corrosion in steels normally originates from local corrosion, and then propagates to the whole surface. The heterogeneous microstructural features, such as grain boundaries, second phases, dislocations, and inclusions, particularly sulfide inclusions, are the origin of local corrosion [1,2,3,4,5,6,7,8,9,10,11,12,13]. Therefore, many researchers have conducted research to elucidate the effects of inclusions on local corrosion to minimize their negative impacts [3,4,5,6,7,8,9,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Mechanism Understanding of the Role of Rare Earth Inclusions in the Initial Marine Corrosion Process of Microalloyed Steels

Tang

Liu

et al. 2019

Materials

Self Cite

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In this study, the corrosion behavior of rare earth (RE) microalloyed steels was first evaluated through potentiodynamic polarization tests and corrosion weight loss experiments, and then the corrosion morphologies were observed by scanning electron microscope (SEM). After immersion in a NaCl solution, the sulfides (or oxygen sulfides) dissolved preferentially, followed by corrosion at the boundary between the Fe matrix and oxides. Afterwards, the inclusions fell off as a whole, which promoted pitting nucleation. The first principle modeling demonstrated that the work functions of various kinds of inclusions descended in the following order: La2Zr2O7 > LaAlO3 > (La2O3 ≈ Fe ≈ La2O2S) > La2S3, which provided a theoretical explanation to the dissolution behaviors of inclusions. That is, inclusions containing sulfur tend to dissolve preferentially, whereas the oxides do not dissolve easily. Subsequently, the surface current distributions were detected by the scanning vibrating electrode technique (SVET), which provided more microscopic insight into the role of inclusions in the corrosion propagation. Results showed that the active sites of pitting nucleation accelerated the transverse propagation of corrosion. Finally, local corrosion spread to the whole surface as uniform corrosion.

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Modeling of the Critical Pitting Temperature between the Laboratory-Scale Specimen and the Large-Scale Specimen

Cited by 9 publications

References 42 publications

Test Method and Application of High-Temperature Operating Life of Automobile Chips

Test Method and Application of High-Temperature Operating Life of Automobile Chips

Enhancements of Passive Film and Pitting Resistance in Chloride Solution for 316LX Austenitic Stainless Steel After Sn Alloying

Mechanism Understanding of the Role of Rare Earth Inclusions in the Initial Marine Corrosion Process of Microalloyed Steels

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