Zirconium alloy shell and its preparation method, zirconium alloy component

A zirconium alloy and cladding technology, applied in the field of materials, can solve problems such as temperature rise of zirconium alloy cladding tube, rupture of zirconium alloy cladding tube, nuclear leakage, etc., so as to improve the anti-oxidation performance, improve the fault tolerance performance of accidents, and improve the anti-oxidation performance. The effect of water vapor oxidation properties

Active Publication Date: 2021-06-22
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Under the conditions of a nuclear reactor loss of water accident, the temperature of the zirconium alloy cladding tube will rise sharply and react violently with water vapor, so the zirconium alloy cladding tube may rupture during the subsequent quenching process, resulting in nuclear leakage

Method used

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  • Zirconium alloy shell and its preparation method, zirconium alloy component
  • Zirconium alloy shell and its preparation method, zirconium alloy component
  • Zirconium alloy shell and its preparation method, zirconium alloy component

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preparation example Construction

[0042] The present invention also provides a method for preparing a zirconium alloy cladding, comprising the following steps:

[0043] S1, providing zirconium alloy substrate;

[0044] S2, forming a transition layer on the surface of the zirconium alloy substrate;

[0045] S3, forming a MAX phase layer on the surface of the transition layer;

[0046] S4, forming a sealing layer on the surface of the MAX phase layer to obtain a zirconium alloy cladding, wherein the sealing layer is a hard coating.

[0047] In step S1, it also includes removing oxides on the surface of the zirconium alloy substrate. For example, the zirconium alloy substrate is ultrasonically cleaned in alcohol and suspended on a base frame in a vacuum coating chamber, and etched with an Ar ion beam to remove oxides on the surface of the zirconium alloy substrate.

[0048] Specifically, the flow rate of argon gas introduced is 25 standard ml / min to 40 standard ml / min, the linear anode ion source current is se...

Embodiment 1

[0063] The zirconium alloy substrate was ultrasonically cleaned in alcohol, then suspended on the base frame in the vacuum coating chamber, and etched with Ar ion beams to remove oxides on the surface of the zirconium alloy substrate. Wherein, the flow rate of argon gas introduced is 35 standard ml / min, the linear anode ion source current is set to 0.2A, the bias voltage applied on the zirconium alloy substrate is -300V, and the etching time is 40min.

[0064] The TiC layer is deposited on the surface of the zirconium alloy substrate by means of an arc ion plating method, wherein the arc target is a titanium target, the reaction gas is methane, and the pedestal rotates at a position facing the arc target during the deposition process. The current of the arc target is 60A, the bias voltage applied on the zirconium alloy substrate is -100V, the flow rate of argon gas is 200 standard ml / min, the flow rate of methane is 50 standard ml / min, the pressure of the control chamber is 30m...

Embodiment 2

[0076] The zirconium alloy substrate was ultrasonically cleaned in alcohol, then suspended on the base frame in the vacuum coating chamber, and etched with Ar ion beams to remove oxides on the surface of the zirconium alloy substrate. Wherein, the flow rate of argon gas introduced is 25 standard ml / min, the linear anode ion source current is set to 0.1A, the bias voltage applied on the zirconium alloy substrate is -350V, and the etching time is 60min.

[0077] The TiC layer is deposited on the surface of the zirconium alloy substrate by means of an arc ion plating method, wherein the arc target is a titanium target, the reaction gas is methane, and the pedestal rotates at a position facing the arc target during the deposition process. The current of the arc target is 55A, the flow rate of argon gas is 200 standard ml / min, the bias voltage applied on the zirconium alloy substrate is -150V, the flow rate of methane is 50 standard ml / min, the pressure of the control chamber is 30m...

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Abstract

The invention relates to a zirconium alloy shell, a preparation method thereof, and a zirconium alloy component. The zirconium alloy cladding includes a zirconium alloy base and a coating provided on the surface of the zirconium alloy base, the coating includes a transition layer for bonding with the surface of the zirconium alloy base, and is sequentially stacked on the transition layer A MAX phase layer and a sealing layer on the surface, wherein the sealing layer is a hard coating. The zirconium alloy cladding shell of the invention has good water vapor oxidation resistance, thereby effectively improving the fault tolerance performance of the zirconium alloy cladding shell. Therefore, when the zirconium alloy cladding shell of the present invention is used for a zirconium alloy component, safety can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a zirconium alloy shell, a preparation method thereof, and a zirconium alloy component. Background technique [0002] Under the conditions of a nuclear reactor loss of water accident, the temperature of the zirconium alloy cladding tube will rise sharply and react violently with water vapor. Therefore, the zirconium alloy cladding tube may rupture during the subsequent quenching process, resulting in nuclear leakage. After the Fukushima nuclear accident in Japan in 2011, further improving the accident tolerance of zirconium alloy cladding has become a new research hotspot. Contents of the invention [0003] Based on this, it is necessary to address the above problems and provide a zirconium alloy cladding, a preparation method thereof, and a zirconium alloy component; the zirconium alloy cladding has good water vapor oxidation resistance and excellent fault tolerance performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/04C23C14/06C23C14/32C23C14/35G21C3/07
CPCY02E30/30
Inventor 柯培玲李文涛汪爱英张栋王振玉
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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