Mechanical and fatigue strengths of silicon nitride ceramics in liquid aluminum alloys

Okayasu, Mitsuhiro; Hitomi, M.; Yamazaki, H.

doi:10.1016/j.jeurceramsoc.2009.01.013

Cited by 16 publications

(2 citation statements)

References 36 publications

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“…Also, it is important recognize that the fatigue behavior of silicon nitride and similar ceramics can be sensitive to different environmental factors such as humidity, elevated temperatures, and exposure to liquids . Such exposure can give accelerated crack growth over what would otherwise be expected based on data from ambient conditions.…”

Section: Discussionmentioning

confidence: 99%

Fatigue Threshold R‐curves Predict Fatigue Endurance Strength for Self‐Reinforced Silicon Nitride

et al. 2013

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There is a need for methods that can help predict and avoid fatigue failures of silicon nitride ceramic components. The fatigue threshold R-curve has been proposed as potential solution to this problem. In this study, the fatigue threshold R-curve for small, semielliptical surface cracks was calculated for a silicon nitride ceramic using the published bridging stress distribution developed from fatigue threshold tests on macroscopic crack specimens. To test the accuracy of the endurance strengths predicted using the fatigue threshold R-curve, fatigue tests were conducted using four-point bend beams of silicon nitride containing semielliptical surface cracks introduced by Knoop indentation. The effectiveness of the methodology was verified; indeed, 77% of the beams tested at stress levels above the predicted endurance strength failed within 10 7 cycles and 0% of the beams tested below the predicted endurance strength failed within 10 7 cycles. Furthermore, using the bridging stress distribution, which is thought to be a material property, the need for prohibitively difficult fatigue threshold experiments on small surface cracks is avoided. Accordingly, this methodology is potentially quite practical for use in the engineering design of ceramic mechanical components. D. Marshall-contributing editorManuscript No. 33525.

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Section: Discussionmentioning

confidence: 99%

Fatigue Threshold R‐curves Predict Fatigue Endurance Strength for Self‐Reinforced Silicon Nitride

et al. 2013

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“…Silicon Nitride (Si3N4): Though not frequently applied as a coating, Si3N4 is a ceramic material with remarkable mechanical and thermal properties. It is widely utilized in tools used for cutting purposes, bearings, and other elements owing to its elevated hardness and resistance to thermal shock [25]. The application of these nitride coatings is facilitated through methods like PVD or CVD, allowing for precise control over coating thickness and uniformity.…”

Section: Types Of Nitridesmentioning

confidence: 99%

Advancement and characterization of Nitride Coating Materials on Aluminum Alloy-based Bipolar plates in PEMFC's Applications

Narasimharaju,

Annamalai

2024

MATEC Web Conf.

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This review article delves into the recent strides made in the realm of Proton Exchange Membrane Fuel Cell through the exploration of nitride coating materials on Aluminium (Al) alloy-based Bipolar plates (BPs). The study focuses on the advancements achieved in enhancing the performance and durability of these crucial components. Through a comprehensive characterization process, the nitride coatings' impact is assessed, emphasizing critical parameters such as corrosion current density, potentiostat results, and Internal Contact Resistance (ICR). The review highlights the notable advantages brought about by nitride coatings, particularly their corrosion resistance and durability, in mitigating challenges posed by the demanding operational conditions of fuel cells. Additionally, it sheds light on existing challenges, such as coating porosity and adhesion issues, underscoring the importance of ongoing research efforts to optimize these materials. As the exploration of nitride-coated Al alloy BPs progresses, this review anticipates contributing valuable insights to the broader goal of advancing sustainable and efficient energy solutions in PEMFC applications.

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SiC in Electrolysis Pots: An Update

Pawlek¹

2016

Light Metals 2016

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Mechanical and fatigue strengths of silicon nitride ceramics in liquid aluminum alloys

Cited by 16 publications

References 36 publications

Fatigue Threshold R‐curves Predict Fatigue Endurance Strength for Self‐Reinforced Silicon Nitride

Fatigue Threshold R‐curves Predict Fatigue Endurance Strength for Self‐Reinforced Silicon Nitride

Advancement and characterization of Nitride Coating Materials on Aluminum Alloy-based Bipolar plates in PEMFC's Applications

SiC in Electrolysis Pots: An Update

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