Unlock instant, AI-driven research and patent intelligence for your innovation.

Zirconium-niobium alloy containing germanium and bismuth for nuclear power plant fuel cladding

A technology of fuel cladding and zirconium-niobium alloy, which is applied in the field of zirconium-niobium alloy to achieve excellent corrosion resistance, improved corrosion resistance, and improved corrosion resistance

Active Publication Date: 2018-04-27
SHANGHAI UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zr-1Nb is a Sn-free alloy, the effect of compound addition of different contents of Bi and Ge on its corrosion resistance has not been reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zirconium-niobium alloy containing germanium and bismuth for nuclear power plant fuel cladding
  • Zirconium-niobium alloy containing germanium and bismuth for nuclear power plant fuel cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] See Table 1, which shows the composition of four typical germanium-bismuth-containing zirconium-niobium alloy materials according to the present invention.

[0018]

[0019] (1) According to the above formula and ingredients, it is melted into an alloy ingot weighing about 65g in a vacuum non-consumable electric arc furnace, and is filled with high-purity argon for protection during melting. alloy ingot;

[0020] (2) The above-mentioned alloy ingot is hot-pressed at 700°C for several times, and processed into a billet, the purpose is to break the coarse as-cast grain structure;

[0021] (3) After the billet has been descaled and pickled, it is subjected to β-phase homogenization treatment at 1030-1050 °C in vacuum for 40 minutes and then air-cooled; then it is hot-rolled at 700 °C. After hot-rolling, the scale is removed and pickled Remove grease, then heat in vacuum at β phase at 1030-1050°C for 40 minutes, and then air-cool;

[0022] (4) After the billet is air-c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a zirconium-niobium alloy which can be used as germanium-bismuth-containing structural materials such as pressurized water reactor nuclear power station fuel cladding, a positioning lattice stripe and the like, and belongs to the technical field of zirconium alloy materials. The zirconium alloy consists of the following chemical components in percentage by weight: 0.9%-1.1% of Nb, 0.01%-0.1% of Ge, 0.1%-0.6% of Bi and the balance of Zr, preferably 0.9%-1.1% of Nb, 0.03%-0.08% of Ge and 0.2%-0.4% of Bi. The zirconium alloy has excellent corrosion resistance, which is obviously superior to that of an Zr-1Nb alloy, in 400 DEG C / 10.3MPa superheated steam and 360 DEG C / 18.6MPa deionized water, is good in processing performance, and can be used as reactor core structural materials such as fuel element cladding, the positioning lattice stripe and the like in a nuclear power station pressurized water reactor.

Description

technical field [0001] The invention relates to a zirconium-niobium alloy containing germanium and bismuth that can be used as structural materials such as fuel cladding of a pressurized water reactor nuclear power plant and positioning grid strips, and belongs to the technical field of zirconium alloy materials. Background technique [0002] Zirconium has excellent nuclear properties, and its thermal neutron absorption cross section is small, only 0.18×10 -28 m 2 . Using zirconium alloy instead of stainless steel as the structural material of nuclear reactors can reduce the consumption of uranium fuel by half. The compatibility of zirconium and uranium is good, and the diffusion temperature of zirconium and uranium is higher than 750 ℃, which is higher than that of aluminum, magnesium, beryllium and their alloys. Zirconium alloys have good corrosion resistance in 300-400 ℃ high temperature and high pressure water and steam, and have good resistance to neutron radiation i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00G21C3/07
CPCC22C16/00G21C3/07Y02E30/30
Inventor 姚美意王志刚张骏冯炫凯黄娇张金龙周邦新
Owner SHANGHAI UNIV