A kind of preparation method of glass microbead reinforced porous aluminum matrix composite material
A technology of glass microspheres and composite materials, which is applied in the field of preparation of porous aluminum matrix composite materials, and can solve the problems of poor energy absorption capacity of glass microsphere reinforced porous aluminum matrix composite materials, high volume fraction of glass microsphere reinforcements, and singleness. , to achieve the effect of easy operation, low cost and simple process method
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specific Embodiment approach 1
[0032] Embodiment 1: The preparation method of the glass microbead reinforced porous aluminum matrix composite material in this embodiment is carried out according to the following steps:
[0033] 1. Weighing: Weigh 20%-69% glass beads, 1%-50% metal powder and 30%-60% aluminum ingots by volume fraction; the average particle size of the glass beads and the average size of the metal powder The particle size is the same;
[0034] 2. Preparation of mixed powder:
[0035] Mix glass microbeads with metal powder of equal particle size, then perform low-speed ball milling, and finally dry to obtain mixed powder;
[0036] Before mixing the glass microbeads with the metal powder of equal particle size, place the glass microbeads in deionized water or alcohol solution, select the floating glass microbeads, and dry; The microbeads are screened to ensure the integrity of the glass microbeads in the composite.
[0037] The low-speed ball milling process is as follows: the ratio of balls ...
specific Embodiment approach 2
[0046] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the average particle size of the glass microbeads and the average particle size of the metal powder in step 1 are 10 μm to 100 μm.
specific Embodiment approach 3
[0047] Embodiment 3: This embodiment differs from Embodiment 1 or 2 in that: the wall thickness-to-radius ratio (r / R) of the glass microbeads in step 1 is 0.032-0.072; the wall thickness-to-radius ratio of the glass microbeads ( r / R) of 0.032-0.072 can maintain the strength of glass microbeads while maintaining its high porosity.
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