Study on the Strength of the Plasma Sprayed Ceramic Coating After Thermal Cycle Test

等离子喷涂陶瓷涂层热循环试验后的强度研究

• 批准号: 03650593
• 负责人: SEO Kenji
• 金额: $ 1.47万
• 依托单位: HIMEJI INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650593/
• 关键词: ceramic; sprayed coating; thermal stress; thermal cycle test; J-integral; joint of dissimilar materials; BEM; BEM; 残留応力; 熱応力

The purpose of this study is to investigate the strength of the plasma sprayed alumina coating after thermal cycle test. A summary of the obtained results are as follows:(1) An analysis connected with the thermal stress and strain during thermal spraying and thermal cycle test are performed usaing the theory of elasticity and a boundary element method. If the test specimen are composed of the substrate with thethickness being 4 times, and the length and the width being 8 times as large as a thickness of sprayed coating, the thermal stress during thermal cycle test are the same as that of sprayed substrate in working field.(2) The thermal cycle test of plasma sprayed alumina coating which are deposited on the stainless substrate are carried out. The number of thermal cycle to failure of alumina coating are affected by the edge shape of coating.(3) The effect of dominant parameters ( the difference of the coefficient of linear thermal expansion between the ceramic coating and the substrate, the ratio of Young s modulus of both materials) on the J integral after thermal cycle test are clarified by numerical simulation.

本研究的目的是研究等离子喷涂氧化铝涂层经过热循环试验后的强度。(1)利用弹性力学理论和边界元方法，对热喷涂过程中的热应力应变进行了分析，并进行了热循环试验。当试件由厚度为涂层厚度的4倍、长度和宽度为涂层厚度的8倍的涂层组成时，热循环试验时的热应力与现场喷涂的涂层的热应力相同。(2)对沉积在不锈钢衬底上的等离子喷涂氧化铝涂层进行了热循环试验。氧化铝涂层的热循环次数受涂层边缘形状的影响。(3)通过数值模拟，阐明了主要参数(陶瓷涂层与基材的线膨胀系数之差、两种材料的杨氏S模数之比)对热循环试验后J积分的影响。

项目成果

瀬尾健二ほか: "溶射部材に生じる界面端部の残留応力" 溶接学会論文集. 9. 430-436 (1991)

Kenji Seo 等人：“热喷涂部件界面边缘的残余应力”，日本焊接学会会议录，9. 430-436 (1991)。

瀬尾 健二ほか: "溶射部材に生じる界面端部の残留応力" 溶接学会論文集. 9. 430-436 (1991)

Kenji Seo 等人：“热喷涂部件界面边缘的残余应力”，日本焊接学会会议录，9. 430-436 (1991)。

T. Terasaki, T. Akiyama, T. Hirai and K. Seo: "Study of Residual Stress in the Vicinity of Interface Corner of Sprayed Coating" Quarterly Journal of the Japan Welding Society. Vol.9 No.3. 430-436 (1991)

T. Terasaki、T. Akiyama、T. Hirai 和 K. Seo：《喷涂层界面角附近残余应力的研究》日本焊接学会季刊。

瀬尾 健二ほか: "き裂を含む異種接合材のJ積分" 溶接学会論文集. 10. 429-433 (1992)

Kenji Seo 等人：“含有裂纹的异种接头的 J 积分”日本焊接学会会议记录 10. 429-433 (1992)。

瀬尾健二ほか: "温度変化を受ける異種材接合部のJ積分" 溶接学会全国大会講演概要 第51集. 268-269 (1992)

Kenji Seo 等人：“受温度变化影响的异种材料接头的 J 积分”全国焊接学会会议演讲摘要，第 51 卷 268-269（1992 年）