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PbTiO3 ceramic exhibits large negative coefficient of thermal expansion in a wide temperature range. Here, we demonstrate that PbTiO3 particles is an effective filler to adjust the thermal expansion of copper matrix composite. The PbTiO3/Cu composites in the present study are prepared by spark plasma sintering method. The addition of PbTiO3 particles effectively reduces the coefficient of thermal...
An aluminum coating was deposited on the surface of a friction stir welded 2024-T351 aluminum alloy joint via cold spraying for corrosion protection. The results show that a relatively dense coating could be formed except some pores on the coating surface layer under certain spray conditions, and the bonding between the coating and the weld surface seems good. Immersion tests in the exfoliation solution...
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