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Enhancing adhesion in columnar crystal Ni coatings via interface-pinning structure optimization

Authors: Shi-yu CUI; Hua-wei CHENG; Jun HUANG; Wen-ping LIANG; Luis Saucedo MORA; Joseph P. DOMBLESKY; Jun-ming LUO

DOI: 10.1016/S1003-6326(25)67027-0Status: Verified Translated Edition
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Key Findings in This Report

• Double glow plasma surface alloying enables controlled columnar crystal Ni coatings with enhanced adhesion. • Interface-pinning effects achieved via layer-by-layer and island growth mechanisms improve coating-substrate bonding. • Diffusion analysis reveals comparable primary and cross-diffusion coefficients, indicating Inconel718 re-sputtering involvement. • Coating withstands 200 thermal cycles without delamination, demonstrating exceptional adhesion performance.