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Abrasion-resistant corrosion-resistant material and process for preparing the same

A corrosion-resistant material and preparation technology, applied in the field of wear-resistant and corrosion-resistant materials, can solve the problems of complex process, easy reaction, difficult control of particle distribution uniformity, etc., and achieve excellent wear resistance, high wear resistance, The effect of uniform particle distribution

Inactive Publication Date: 2007-07-11
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these methods all have certain deficiencies, such as casting infiltration method, spray dispersion method and other complex processes and difficult to control the thickness of the composite layer; the main problem of casting method is that the reaction between liquid metal and particles is easy to occur, and the uniformity of particle distribution is difficult. control; while the in situ synthesis method faces problems such as how to suppress the formation of unwanted reactants and control the volume fraction of reinforcing particles
It is worth noting that although these methods have been successful in the preparation of some wear-resistant composite materials, there is still a certain distance from the scale of popularization and application, and further improvement is needed [Feng Keqin et al. Preparation technology and prospects of iron-based composite materials .Mechanical Engineering Materials, 2002, 26(12):9-13]

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: 316L / Y-PSZ composite material, its material ratio is: 316L / Y-PSZ mixed powder 95wt% (316L stainless steel powder 37.9wt%, Y-PSZ powder 62.1wt%), binder 5wt% (wherein HPMC 5wt%, water 95wt%). The viscous powder was sealed and wrapped and stored at room temperature for 48 hours; then pressed in the mold at a speed of 1 mm / min, and held for 1 minute after reaching a pressure of 300 MPa; The temperature was raised to 100°C at a rate of 1 / min, kept for 5 hours, then heated to 450°C at a rate of 8°C / min, and kept for 8 hours. 6.65×10 -2 Pa, heated to 1000°C at a rate of 10°C / min, then heated to 1350°C at a rate of 5°C / min, held for 2.5 hours, then cooled to 1000°C at a rate of 5°C / min, and then heated to 1000°C at a rate of 10°C / min The speed of cooling to 800 ℃, and then cooling with the furnace.

Embodiment 2

[0022] Example 2: 316L / Y-PSZ composite material, its material ratio is: 316L / Y-PSZ mixed powder 92wt% (among which 316L stainless steel powder 58.7wt%, Y-PSZ powder 41.2wt%), binder 8wt% (wherein HPMC 10wt%, water 90wt%). The viscous powder was sealed and wrapped and stored at room temperature for 24 hours; then pressed in the mold at a speed of 1 mm / min, and held for 5 minutes after reaching a pressure of 300 MPa; The temperature was raised to 110°C at a rate of 1 / min, kept for 2 hours, then heated to 450°C at a rate of 8°C / min, and kept for 6 hours; the degreasing body was heated to 500°C with the furnace in the vacuum sintering furnace, and the vacuum was pumped to 500°C. 6.65×10 -2 Pa, heated to 1100°C at a rate of 10°C / min, then heated to 1300°C at a rate of 5°C / min, kept for 3 hours, then cooled to 1000°C at a rate of 5°C / min, and then heated to 1000°C at a rate of 10°C / min The speed of cooling to 800 ℃, and then cooling with the furnace.

Embodiment 3

[0023] Example 3: 316L / Y-PSZ composite material, the material ratio is: 316L / Y-PSZ mixed powder 93wt% (including 316L stainless steel powder 48.7wt%, Y-PSZ powder 51.3wt%), binder 7wt% (wherein HPMC 7wt%, water 93wt%). The viscous powder was sealed and wrapped and stored at room temperature for 36 hours; then pressed in the mold at a speed of 2 mm / min, and held for 2 minutes after reaching a pressure of 400 MPa; The temperature was raised to 120°C at a rate of 1 / min, kept for 3 hours, then heated to 500°C at a rate of 10°C / min, and kept for 6 hours. The temperature was raised to 1000°C at a rate of 10°C / min, then increased to 1350°C at a rate of 5°C / min, kept for 1.5 hours, and then filled with inert gas for 10 minutes until the air pressure reached 9MPa, kept for 1 hour at 5°C / The temperature was lowered to 1000°C at a speed of 10°C per minute, then lowered to 800°C at a rate of 10°C / min, and then cooled with the furnace.

[0024] In the above embodiment, the average parti...

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Abstract

The invention relates a method for preparation of abrasion-resistance and corrosion-resistant material, included in abrasion resistance and corrosion-resistant material field. The new type abrasion-resistance and corrosion-resistant material is made by powder metallurgic method with the raw material of 316L non-corrodible steel powder and Y203 partial stabilisation zircite powder. The components of the material are following: 30-80wt% 316L non-corrodible steel powder, 70-20wt% Y-PSZ powder. The method comprises the following steps: mixing the raw materials in proportion; chill-pressing and shaping the mixing powder; heat degreasing the green compact; then sintering and molding the billet body in the condition of vacuum or inactive gas. The invention has the advantages of simple technology, low cost and high abrasion resistance and corrosion resistance. The invention can be extensively used in energy engineering, energy engineering, chemical and chemical industry, metallurgy, aviation and other fields to make abrasion-resistance and corrosion-resistant material.

Description

technical field [0001] The invention belongs to the field of wear-resistant and corrosion-resistant materials, and particularly provides a preparation method of 316L / Y-PSZ wear-resistant and corrosion-resistant materials. Background technique [0002] With the rapid development of science and technology and the national economy, the requirements for wear-resistant and corrosion-resistant materials in machinery, chemical industry, metallurgy and other fields are getting higher and higher, and the service life of production equipment has become an important factor affecting production efficiency. However, traditional wear-resistant materials have gradually been unable to meet the requirements of application conditions. Therefore, in terms of application research, metal-ceramic composite materials, engineering ceramic materials and organic materials have developed rapidly. Metal-ceramic composite materials with excellent comprehensive performance and low price are the solution. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C33/02
Inventor 谢建新张文泉刘雪峰郭振文
Owner UNIV OF SCI & TECH BEIJING