Corrosion Resistance of Modified Hexagonal Boron Nitride (h-BN) Nanosheets Doped Acrylic Acid Coating on Hot-Dip Galvanized Steel

Abstract

The hexagonal boron nitride (h-BN) nanosheets modified by silane coupling agent (KH560) were doped into acrylic acid coating on the surface of galvanized steel to improve its corrosion resistance. H-BN nanosheets modified by KH560 were prepared and characterised by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The corrosion resistance of the acrylic acid coatings was measured by electrochemical testing. The results show that the corrosion current density of the coating with modified h-BN nanosheets was reduced from 2.2 × 10−5 A/cm2 to 2.3 × 10−7 A/cm2 compared with the acrylic acid coating. The impedance of the composite coating with modified h-BN is 4435 Ω·cm2, higher than the BNNS coating (2500 Ω·cm2) and the acrylic acid coating (1500 Ω·cm2). This is due to the physical barrier and electrical insulation properties of the hexagonal boron nitride (h-BN) nanosheets.

Excellent dielectric and actuated strain properties in CCTOx@BT(1−x)@KH560/NR system via a tunable BaTiO3 interfacial buffer layer

“…Compared with the CCTO 0.75 @BT 0.25 sample, the FTIR of CCTO 0.75 @BT 0.25 @KH560 have absorption peaks at 2958 cm −1 , 2871 cm −1 , and 1085 cm −1 , respectively. Among them, the absorption peaks at 2958 cm −1 and 2871 cm −1 were from the symmetric and antisymmetric absorption peaks of CH 3 and CH 2 of the silane coupling agent KH560, respectively 34 . In addition, the absorption peak at 1085 cm −1 was the absorption vibration peak of SiO on KH560 35 .…”

“…Among them, the absorption peaks at 2958 cm À1 and 2871 cm À1 were from the symmetric and antisymmetric absorption peaks of CH 3 and CH 2 of the silane coupling agent KH560, respectively. 34 In addition, the absorption peak at 1085 cm À1 was the absorption vibration peak of Si O on KH560. 35 These results show that KH560 had successfully modified the CCTO 0.75 @BT 0.25 particles.…”

2D hexagonal boron nitride (h-BN) nanosheets in protective coatings: A literature review

“…BNNSs were also shown to be an adequate filler with other polymer coatings. Reported works include BNNSs - Acrylic for 304 SS [ 110 ], KH560-modified BNNSs - Acrylic on galvanized steel [ 111 ], plasma treated BNNSs - Acrylic for low carbon steel [ 112 ], phenyl silane functionalized BNNSs - Poly(arylene ether nitrile) for P110 steel [ 113 ], BNNSs - Polyvinyl alcohol (PVA) for 316L SS [ 114 ], BNNSs - Poly vinyl butylene for Cu [ 115 ], PDA-functionalized BNNSs - PVA for 304 SS [ 116 ], PDA - GO - BNNSs - Polyvinylbutyral for mild steel [ 117 ], TiO 2 decorated BNNSs - Poly (3,4-ethylene dioxythiophene) for 316 LSS [ 118 ], BNNSs-incorporated polyisobutylene [ 119 ], and BNNSs - Cellulose acetate [ 120 ] and BNNSs - PVA [ 121 ] for preventing polymer degradation.…”

Boron Carbonitride Films with Tunable Composition: LPCVD and PECVD Synthesis Using Trimethylamine Borane and Nitrogen Mixture and Characterization

“…Materials based on BC x N y , having low atomic masses and covalent bonds, being simultaneously light and high strength, exhibit a hardness in a wide range of values [3,15,16]. It should be noted that h-BN [17,18], B 4 C [19], h-BC x N y [20,21] and BC x N y /graphene [22] coatings with high thermal and chemical stability have proven their effectiveness in metallic corrosion resistance.…”