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首页> 外文会议>2003 International Thermal Spray Conference Vol.2; May 5-8, 2003; Orlando, Florida, USA >Improvement of the Properties of Thermally Sprayed Ceramic Coating by the Infiltration of the Adhesives
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Improvement of the Properties of Thermally Sprayed Ceramic Coating by the Infiltration of the Adhesives

机译：通过粘合剂渗透改善热喷涂陶瓷涂层的性能

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摘要

Thermally sprayed ceramic coating consists generally of porosity up to over ten percent. The existence of voids in the coating will degrade mechanical performance and corrosion resistance. The infiltration technique has been used to enhance the coating performance. In the present work, the adhesives of high strength are used as infiltrator for plasma sprayed alumina coatings to investigate the effect of the infiltration on the adhesive strength and erosion resistance. The adhesive strength of coating after infiltration is tested following ASTM-C-633 standard with the same adhesive. The commercial adhesives used are liquid types of adhesives. Alumina coatings are deposited by plasma spraying to a thickness about 500 μm. The adhesive strength of as-sprayed coating was tested using another epoxy resin adhesive. The test pieces are prepared without infiltration of adhesive into the coating. The results revealed that the infiltration of adhesive to alumina coating can improve significantly the adhesive strength and erosion resistance. The adhesive strength from 40 to 55 MPa can be obtained in spite of deposition conditions. The erosion resistance of the coating at 90 degrees can be improved by a factor about 3.
机译：热喷涂陶瓷涂层的孔隙率通常高达百分之十以上。涂层中存在空隙会降低机械性能和耐腐蚀性。渗透技术已被用于增强涂层性能。在目前的工作中，高强度的粘合剂用作等离子喷涂氧化铝涂层的渗透剂，以研究渗透对粘合强度和抗侵蚀性的影响。按照ASTM-C-633标准，使用相同的粘合剂测试渗透后涂层的粘合强度。使用的商业粘合剂是液体类型的粘合剂。通过等离子喷涂将氧化铝涂层沉积到约500μm的厚度。使用另一种环氧树脂粘合剂测试喷涂后的涂层的粘合强度。制备试样时，粘合剂不渗入涂层中。结果表明，粘合剂渗入氧化铝涂层可以显着提高粘合强度和抗侵蚀性。尽管有沉积条件，仍可获得40至55 MPa的粘合强度。涂层在90度的耐蚀性可以提高约3倍。

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