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Fused zinc corrosion resistant intermetallic compound Ti-Al-Nb alloy

A technology of intermetallic compounds and molten zinc corrosion resistance, which is applied in the field of new high-niobium titanium-aluminum alloys and intermetallic compounds-Ti-Al-Nb alloys

Inactive Publication Date: 2006-07-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no reports at home and abroad on the research on the corrosion resistance of high-niobium titanium-aluminum-based alloys in molten zinc.

Method used

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  • Fused zinc corrosion resistant intermetallic compound Ti-Al-Nb alloy
  • Fused zinc corrosion resistant intermetallic compound Ti-Al-Nb alloy
  • Fused zinc corrosion resistant intermetallic compound Ti-Al-Nb alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The nominal composition of the alloy used in the experiment is Ti-45Al-8Nb-0.1W-0.1B-0.1Y) (atomic percentage), and the ingot is melted by vacuum consumable solidification shell. In the experiment, the corrosion resistance of the alloy was compared with that of 316 stainless steel. The specifications of the 316 stainless steel sample and the cast high-niobium titanium-aluminum sample are both 50×20×2mm 3 , Clean the sample with ultrasonic waves before the test. Put the zinc ingot (with an aluminum content of about 0.2% by weight) into a crucible and heat it to melt it, and heat it to 450° C. to keep it warm. Then insert the sample into the zinc liquid, and do the static corrosion resistance life test at 450°C. Observe the changes of the surface topography of the samples in different experimental periods, and measure the thickness loss. figure 1 is the schematic diagram of static corrosion equipment. figure 2 It is a northern scattering photo of the as-cast high Nb-...

Embodiment 2

[0027] The nominal composition of the alloy used in the experiment is Ti-50Al-17Nb-0.5W-1B-1Y) (atomic percentage), and the ingot is smelted by vacuum consumable solidification shell. In the experiment, the corrosion resistance of the alloy was compared with that of 316 stainless steel. The specifications of the 316 stainless steel sample and the cast high-niobium titanium-aluminum sample are both 50×20×2mm 3 , Clean the sample with ultrasonic waves before the test. Put the zinc ingot (with an aluminum content of about 0.2% by weight) into a crucible and heat it to melt it, and heat it to 450° C. to keep it warm. Then insert the sample into the zinc liquid, and do the static corrosion resistance life test at 450°C. Observe the changes of the surface topography of the samples in different experimental periods, and measure the thickness loss.

[0028] The experimental results show that the zinc liquid (containing about 0.2% by weight of aluminum, 450° C.) exhibits super corro...

Embodiment 3

[0030] The nominal composition of the alloy used in the experiment is Ti-55Al-13Nb-2W-1.5B-2Y) (atomic percentage), and the ingot is melted by vacuum consumable solidification shell. In the experiment, the corrosion resistance of the alloy was compared with that of 316 stainless steel. The specifications of the 316 stainless steel sample and the cast high-niobium titanium-aluminum sample are both 50×20×2mm 3 , Clean the sample with ultrasonic waves before the test. Put the zinc ingot (with an aluminum content of about 0.2% by weight) into a crucible and heat it to melt it, and heat it to 450° C. to keep it warm. Then insert the sample into the zinc liquid, and do the static corrosion resistance life test at 450°C. Observe the changes of the surface topography of the samples in different experimental periods, and measure the thickness loss.

[0031] The experimental results show that the zinc liquid (containing about 0.2% by weight of aluminum, 450° C.) exhibits super corros...

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Abstract

The invention provides an intermetallic compound-Ti-Al-Nb alloy comprising the following constituents: Al 40-60%, ú¼ Nb 5-20%, W 0.1-2%, B 0.05-2%, Y 0.05-2%, and balancing Ti, the ratio is calculated by atom percent.

Description

technical field [0001] The invention belongs to the technical field of intermetallic compounds, and in particular provides an intermetallic compound-Ti-Al-Nb alloy resistant to molten zinc corrosion. It relates to a novel high-niobium titanium-aluminum base alloy with excellent resistance to molten zinc corrosion. Used for various parts in hot-dip galvanized galvanized pots, such as sinking rods, stabilizing rods, guide rollers, furnace noses and bearings, etc. Background technique [0002] Zinc in molten state has low viscosity and low surface tension, and it can easily penetrate into tiny gaps with micron size. It is highly corrosive to most metals (1] R.W.Richards, R.D.Jones, P.D.Clements, and H.Clarke, Metallurgy of Continuous Hot-Dip Aluminizing, The Institute of Materials and ASM International, 1994: 191-212. ; Office of industrial technologies energy efficiency and renewable energy U.S. Department of Energy January 2002: 1-2.; Galvanizing for Corrosion Protection A ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C14/00C22C30/00
Inventor 林均品王文俊王艳丽张勇林志陈国良
Owner UNIV OF SCI & TECH BEIJING
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