HEAT-INSULATING PISTON AND PREPARATION METHOD THEREFOR

A heat-insulating piston and a preparation method therefor. The preparation method comprises: coating the edge portion of the top of a piston with a metal/alloy modified bonding layer; coating the surface of the piston, which is coated with the bonding layer, with a metal/alloy modified yttrium oxid...

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Bibliographische Detailangaben
Hauptverfasser:	JIA, Chunping, DOU, Zhancheng, TAN, Xuguang, ZENG, Xiaoxiao, GUO, Lingyan, CHEN, Wenmiao, WANG, Zhijian, MA, Fei, PANG, Bin
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES DIFFUSION TREATMENT OF METALLIC MATERIAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	A heat-insulating piston and a preparation method therefor. The preparation method comprises: coating the edge portion of the top of a piston with a metal/alloy modified bonding layer; coating the surface of the piston, which is coated with the bonding layer, with a metal/alloy modified yttrium oxide coating; coating the surface of the piston, which is coated with the bonding layer and the yttrium oxide coating, with an yttrium oxide ceramic coating having a hollow structure; and subjecting the surface of the piston, which is coated with the aforementioned coating, to a hole sealing treatment. A heat-insulating piston is prepared by using the above-mentioned preparation method. The piston prepared by the preparation method of the present application has the characteristics of a low heat capacity and low heat conductivity. La présente divulgation concerne un piston d'isolation thermique et son procédé de préparation. Le procédé de préparation comprend les étapes consistant à : revêtir la partie de bord de la p