Title:
HEAT-INSULATING PISTON AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/143062
Kind Code:
A1
Abstract:
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.
Inventors:
TAN XUGUANG (CN)
WANG ZHIJIAN (CN)
CHEN WENMIAO (CN)
MA FEI (CN)
GUO LINGYAN (CN)
PANG BIN (CN)
DOU ZHANCHENG (CN)
JIA CHUNPING (CN)
ZENG XIAOXIAO (CN)
WANG ZHIJIAN (CN)
CHEN WENMIAO (CN)
MA FEI (CN)
GUO LINGYAN (CN)
PANG BIN (CN)
DOU ZHANCHENG (CN)
JIA CHUNPING (CN)
ZENG XIAOXIAO (CN)
Application Number:
PCT/CN2023/071630
Publication Date:
August 03, 2023
Filing Date:
January 10, 2023
Export Citation:
Assignee:
WEICHAI POWER CO LTD (CN)
International Classes:
C23C4/134; C23C4/02; C23C4/06; C23C4/11; C23C4/18; F02F3/10
Domestic Patent References:
| WO2019084373A1 | 2019-05-02 |
Foreign References:
| CN114107874A | 2022-03-01 | |||
| CN113088859A | 2021-07-09 | |||
| CN102762836A | 2012-10-31 | |||
| US20080131608A1 | 2008-06-05 | |||
| JP2013185200A | 2013-09-19 | |||
| US20080131711A1 | 2008-06-05 | |||
| CN102925844A | 2013-02-13 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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