本文選題：改進(jìn)十字交叉法 + 熱障涂層�。� 參考：《硅酸鹽學(xué)報》2017年07期

【摘要】：界面結(jié)合強(qiáng)度是熱障涂層最為重要的力學(xué)指標(biāo)之一。目前,十字交叉法能夠同時測定涂層界面拉伸與剪切結(jié)合強(qiáng)度而得到廣泛應(yīng)用。然而,十字交叉法仍存在不足之處。本研究對十字交叉試樣與夾具進(jìn)行改進(jìn),采用改進(jìn)后的試樣與夾具對8YSZ熱障涂層進(jìn)行測試。結(jié)果表明:8YSZ熱障涂層的界面拉伸結(jié)合強(qiáng)度為(23.68±1.56)MPa,界面剪切結(jié)合強(qiáng)度為(25.88±2.14)MPa,其破壞形式均為界面/涂層破壞;改進(jìn)十字交叉法剪切強(qiáng)度測試時,界面受到的是單一的剪切力,測試不再受到粘結(jié)劑強(qiáng)度的限制;改進(jìn)十字交叉法避免了在拉伸強(qiáng)度測試過程中夾具與樣品摩擦力的影響,提高了測量結(jié)果的準(zhǔn)確性。
[Abstract]:Interface bonding strength is one of the most important mechanical indexes of thermal barrier coatings. At present, cross-cross method has been widely used to measure the tensile and shear bonding strength of the coating interface at the same time. However, there are still shortcomings in the cross-crossing method. In this study, the cross specimen and fixture were improved, and the 8YSZ thermal barrier coating was tested by the improved sample and fixture. The results show that the tensile bonding strength of the interface of the W8 YSZ thermal barrier coating is 23.68 鹵1.56 MPA, and the interfacial shear bonding strength is 25.88 鹵2.14 MPA, and the failure mode is the interface / coating failure, and the interface is subjected to a single shear force when the shear strength of the improved cross method is measured. The test is no longer limited by the strength of binder, and the improved cross method avoids the influence of the friction between the fixture and the sample during the tensile strength test, and improves the accuracy of the measurement results.
【作者單位】： 中國建筑材料科學(xué)研究總院;綠色建筑材料國家重點實驗室;中國建材檢驗認(rèn)證集團(tuán)股份有限公司;
【基金】：國家自然科學(xué)基金(51172221,51472227) 科技部重大儀器專項項目(2011YQ140145) “863”計劃(2015AA034204)項目
【分類號】：TG174.4

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相關(guān)期刊論文 前5條

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本文編號：1984804