Corrosion resistance of nickel-coated SiCp/Al composites in 0.05 M NaCl solution

Design and Fabrication of a Nanoamorphous Interface Layer in B4C/Al Composites to Improve Hot Deformability and Corrosion Resistance

“…In PRAMCs, the addition of reinforcements destroys the continuous oxide film (with good corrosion resistance) on the surface of Al alloy powders . In addition, due to the great potential difference between the reinforcements and the Al matrix, the corrosion resistance of the matrix reduces significantly. − The TEM analysis in this study illustrates that the major difference between these two composites is the interface structure. The standard electrode potentials of MgO and Al 2 O 3 formed in B 4 C/Al composites are −1.722 and −1.494 V, respectively.…”

“…In particle reinforced aluminum matrix composites (PRAMCs), the main mode of corrosion is pitting corrosion of the matrix. , The effect of ceramic particles on the corrosion resistance is primarily in two aspects: on the one hand, it destroys the oxide film on the surface of the aluminum alloy, which leads to the decrease of corrosion resistance; on the other hand, the corrosion resistance of the matrix decreases seriously, owing to the large potential difference between the particles and the Al matrix. − It has been pointed out that the main reasons for corrosion of metal matrix composites (MMCs) are (i) galvanic coupling between the matrix and the reinforcements, (ii) selective corrosion at matrix/reinforcement interface, (iii) chemical degradation of interphases and reinforcements, and (iv) corrosion of matrix defects, , indicating that the interface is the main location of corrosion. Katkar et al reported that the higher the content of the interface reaction products in B 4 C/Al composites (such as AlB 2 , Al 4 C 3 , Al 3 BC, and Al 2 B 4 C 4 ), the greater the corrosion current.…”

Effect of properties and crystallization behavior of BaO–ZnO–B2O3–SiO2 glass on the electrical conductivity of Cu paste

“…The pH value was determined by a pH tester (BELL Analytical Instruments Co., BPHPOCKET). The acid resistance of the glass was evaluated by the weight loss percentage of the sample soaked and corroded in a sulfuric acid solution with a pH = 4 value (according to the nickel‐plating process 17,18 ) at 14 days. The weight loss percentage was calculated by the following formula: $$\begin{equation}w{\rm{\;}} = \left( {{m_0} - {m_1}} \right) \times 100\% /{m_0}{\rm{\;}}\end{equation}$$…”

Microstructure and thermal properties of nickel-coated carbon fibers/aluminum composites

“…3,6,11,15 Among various metallic coatings, electroless Ni coating has been widely devoted to improve the mechanical properties of carbon/Al composites, due to its uniform dense structure, high hardness, and high corrosion resistance. [15][16][17][18] According to the related literature, 18,19 during hot-working process, the coated Ni layer can react with Al matrix and form various intermetallic compounds (e.g. Al 3 Ni and AlNi 3 ), thus leading to a strong chemical bonding, and thereby enhancements in mechanical properties of composites.…”