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Study of Fabricating Metal Material with Contact-Porous by Technique of Wiping off Salt from Sintered Product of Metal and Salt by Melting or Solution

Author: JiaBaoQiang
Tutor: GuChenQing
School: Xi'an University of Technology
Course: Materials Engineering
Keywords: Porous materials Powder Metallurgy Through-hole porous material Pore-forming agent
CLC: TB383.4
Type: Master's thesis
Year: 2005
Downloads: 202
Quote: 2
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Abstract


Industrial salt such as sodium chloride and barium chloride as a pore-forming agent , the use of powder metallurgy a melt , dissolved desalting a pore different melting metal (aluminum, copper , nickel) or alloys have the preparation of the porosity of the porous material in the through-hole technology and principle . The experimental results show that , as long as the optional good metal or alloy with the melting point of the salt can be easily to melt , as pore-forming agent of the dissolved salt , prepared with different pore size and porosity required by the through - hole metal or alloy porous material . Wherein the dissolved salt - desalting a pore system for maintaining the hold of the metallic porous material is advantageous , especially when the melting point of the salt is higher than the melting point of the metal , but also to simplify the process ; pore-forming method by molten salt - desalting shortening the production cycle , beneficial to simplify the preparation process , but also easy to implement the system four surrounding walls of the porous material densification . For applications requiring a higher porosity of the porous material , the center portion is prone to collapse.

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