Microstructure and Properties of Nickel-Clad Cubic Boron Nitride-Reinforced Ni-Based Composite Coating Laser Cladding on Martensitic Stainless Steel Substrates

Shi, Kao; Du, Xueshan; Sun, Yingjuan; Wang, Wenwen

doi:10.1007/s11666-023-01637-8

J Therm Spray Tech

2023

DOI: 10.1007/s11666-023-01637-8

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Microstructure and Properties of Nickel-Clad Cubic Boron Nitride-Reinforced Ni-Based Composite Coating Laser Cladding on Martensitic Stainless Steel Substrates

Kao Shi

Xueshan Du

Yingjuan Sun

et al.

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2024

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Cited by 2 publications

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Laser-based directed energy deposition and characterisation of cBN-reinforced NiAl-based coatings

Müller,

Gerdt,

Schrüfer

et al. 2024

Int J Adv Manuf Technol

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Within this study, the alloy NiAl–2.5Ta–7.5Cr is investigated as a new matrix material for cBN-reinforced abrasive turbine blade tip coatings as currently used NiCoCrAlY matrix alloys suffer from insufficient strength at the high operating temperatures. Laser-based directed energy deposition with blown powder was applied to produce cBN reinforced NiAl-based coatings on monocrystalline CMSX-4 substrates. For this, powdery titanium-coated cBN and NiAl–2.5Ta–7.5Cr material were co-injected into the process zone to achieve an in situ formation of a NiAl–2.5Ta–7.5Cr/cBN composite. In order to overcome challenges such as cracking susceptibility, inductive preheating of the substrate up to 800 °C was used. Optical and scanning electron microscopy, energy dispersive X-ray spectroscopy, as well as electron backscatter diffraction were applied to analyse the fabricated samples’ microstructure. Additionally, the mechanical properties were evaluated by means of microhardness mappings. This work demonstrates the feasibility of in situ forming a metal matrix composite with a homogeneous distribution of cBN particles. The results show the beneficial effect of high-temperature preheating on the crack formation. However, the study also reveals challenges such as cracking induced by the injected cBN particles as well as severe intermixing of substrate and coating, which yields spatially resolved deviations in the chemical composition and resulting variations in microstructure and hardness. Graphical abstract

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Laser-based directed energy deposition and characterisation of cBN-reinforced NiAl-based coatings

Müller,

Gerdt,

Schrüfer

et al. 2024

Int J Adv Manuf Technol

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show abstract

A review on ceramic coatings prepared by laser cladding technology

Wu,

Long,

Zhang

et al. 2024

Optics & Laser Technology

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Microstructure and Properties of Nickel-Clad Cubic Boron Nitride-Reinforced Ni-Based Composite Coating Laser Cladding on Martensitic Stainless Steel Substrates

Cited by 2 publications

References 36 publications

Laser-based directed energy deposition and characterisation of cBN-reinforced NiAl-based coatings

Laser-based directed energy deposition and characterisation of cBN-reinforced NiAl-based coatings

A review on ceramic coatings prepared by laser cladding technology

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